Articles | Volume 16, issue 2
https://doi.org/10.5194/cp-16-713-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-16-713-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
09 Apr 2020
Research article |
| 09 Apr 2020
| 09 Apr 2020
Dansgaard–Oeschger-like events of the penultimate climate cycle: the loess point of view
Denis-Didier Rousseau
CORRESPONDING AUTHOR
Laboratoire de Meteorologie Dynamique (CNRS and Institute Pierre Simon Laplace, IPSL), Ecole Normale Superieure, Paris Sciences & Lettres (PSL) Research University, 75005 Paris, France
Lamont Doherty Earth Observatory, Columbia University, New York, 10964, USA
Pierre Antoine
Laboratoire de Géographie Physique, Environnements quaternaires et actuels, CNRS, Meudon, France
Niklas Boers
Potsdam Institute for Climate Impact Research, Potsdam, Germany
France Lagroix
Institut de Physique du Globe de Paris, Sorbonne Paris Cité,
University Paris Diderot, UMR7154 CNRS, Paris, France
Michael Ghil
Laboratoire de Meteorologie Dynamique (CNRS and Institute Pierre Simon Laplace, IPSL), Ecole Normale Superieure, Paris Sciences & Lettres (PSL) Research University, 75005 Paris, France
Department of Atmospheric and Oceanic Sciences, University of
California, Los Angeles, CA 90095-1565, USA
Johanna Lomax
Department of Geography, Justus-Liebig-Universität Gießen,
Gießen, Germany
Markus Fuchs
Department of Geography, Justus-Liebig-Universität Gießen,
Gießen, Germany
Maxime Debret
Normandie University, UNIROUEN, UNICAEN, CNRS, M2C, Rouen, France
Christine Hatté
Laboratoire des Sciences du Climat et de l'Environnement,
Université Paris-Saclay, Gif-sur-Yvette, France
Olivier Moine
Laboratoire de Géographie Physique, Environnements quaternaires et actuels, CNRS, Meudon, France
Caroline Gauthier
Laboratoire des Sciences du Climat et de l'Environnement,
Université Paris-Saclay, Gif-sur-Yvette, France
Diana Jordanova
National Institute of Geophysics, Geodesy and Geography, Bulgarian
Academy of Sciences, Acad. G. Bonchev Str., Block 3, 1113, Sofia, Bulgaria
Neli Jordanova
National Institute of Geophysics, Geodesy and Geography, Bulgarian
Academy of Sciences, Acad. G. Bonchev Str., Block 3, 1113, Sofia, Bulgaria
Related authors
Susana Barbosa, Maria Eduarda Silva, and Denis-Didier Rousseau
Nonlin. Processes Geophys., 31, 433–447, https://doi.org/10.5194/npg-31-433-2024, https://doi.org/10.5194/npg-31-433-2024, 2024
Short summary
Short summary
The characterisation of abrupt transitions in palaeoclimate records allows understanding of millennial climate variability and potential tipping points in the context of current climate change. In our study an algorithmic method, the matrix profile, is employed to characterise abrupt warmings designated as Dansgaard–Oeschger (DO) events and to identify the most similar transitions in the palaeoclimate time series.
Denis-Didier Rousseau, Witold Bagniewski, and Michael Ghil
Clim. Past, 18, 249–271, https://doi.org/10.5194/cp-18-249-2022, https://doi.org/10.5194/cp-18-249-2022, 2022
Short summary
Short summary
The study of abrupt climate changes is a relatively new field of research that addresses paleoclimate variations that occur in intervals of tens to hundreds of years. Such timescales are much shorter than the tens to hundreds of thousands of years that the astronomical theory of climate addresses. We revisit several high-resolution proxy records of the past 3.2 Myr and show that the abrupt climate changes are nevertheless affected by the orbitally induced insolation changes.
Denis-Didier Rousseau
E&G Quaternary Sci. J., 70, 229–233, https://doi.org/10.5194/egqsj-70-229-2021, https://doi.org/10.5194/egqsj-70-229-2021, 2021
Short summary
Short summary
A year after his doctoral thesis, Ložek chose to share with the international community not only his vision but also the one that the Czechoslovakian researchers working on loess deposits had at that time, through a paper published in the well-established E&G journal. It represented a detailed and complete state of the art of loess and mollusc studies at that time, an extraordinarily synthetic review that still yields a modern flavor as many of the points made remain relevant today.
Zhongshi Zhang, Qing Yan, Ran Zhang, Florence Colleoni, Gilles Ramstein, Gaowen Dai, Martin Jakobsson, Matt O'Regan, Stefan Liess, Denis-Didier Rousseau, Naiqing Wu, Elizabeth J. Farmer, Camille Contoux, Chuncheng Guo, Ning Tan, and Zhengtang Guo
Clim. Past Discuss., https://doi.org/10.5194/cp-2020-38, https://doi.org/10.5194/cp-2020-38, 2020
Manuscript not accepted for further review
Short summary
Short summary
Whether an ice sheet once grew over Northeast Siberia-Beringia has been debated for decades. By comparing climate modelling with paleoclimate and glacial records from around the North Pacific, this study shows that the Laurentide-Eurasia-only ice sheet configuration fails in explaining these records, while a scenario involving the ice sheet over Northeast Siberia-Beringia succeeds. It highlights the complexity in glacial climates and urges new investigations across Northeast Siberia-Beringia.
Niklas Boers, Mickael D. Chekroun, Honghu Liu, Dmitri Kondrashov, Denis-Didier Rousseau, Anders Svensson, Matthias Bigler, and Michael Ghil
Earth Syst. Dynam., 8, 1171–1190, https://doi.org/10.5194/esd-8-1171-2017, https://doi.org/10.5194/esd-8-1171-2017, 2017
Short summary
Short summary
We use a Bayesian approach for inferring inverse, stochastic–dynamic models from northern Greenland (NGRIP) oxygen and dust records of subdecadal resolution for the interval 59 to 22 ka b2k. Our model reproduces the statistical and dynamical characteristics of the records, including the Dansgaard–Oeschger variability, with no need for external forcing. The crucial ingredients are cubic drift terms, nonlinear coupling terms between the oxygen and dust time series, and non-Markovian contributions.
Denis-Didier Rousseau, Anders Svensson, Matthias Bigler, Adriana Sima, Jorgen Peder Steffensen, and Niklas Boers
Clim. Past, 13, 1181–1197, https://doi.org/10.5194/cp-13-1181-2017, https://doi.org/10.5194/cp-13-1181-2017, 2017
Short summary
Short summary
We show that the analysis of δ18O and dust in the Greenland ice cores, and a critical study of their source variations, reconciles these records with those observed on the Eurasian continent. We demonstrate the link between European and Chinese loess sequences, dust records in Greenland, and variations in the North Atlantic sea ice extent. The sources of the emitted and transported dust material are variable and relate to different environments.
D.-D. Rousseau, M. Ghil, G. Kukla, A. Sima, P. Antoine, M. Fuchs, C. Hatté, F. Lagroix, M. Debret, and O. Moine
Clim. Past, 9, 2213–2230, https://doi.org/10.5194/cp-9-2213-2013, https://doi.org/10.5194/cp-9-2213-2013, 2013
A. Sima, M. Kageyama, D.-D. Rousseau, G. Ramstein, Y. Balkanski, P. Antoine, and C. Hatté
Clim. Past, 9, 1385–1402, https://doi.org/10.5194/cp-9-1385-2013, https://doi.org/10.5194/cp-9-1385-2013, 2013
C. Hatté, C. Gauthier, D.-D. Rousseau, P. Antoine, M. Fuchs, F. Lagroix, S. B. Marković, O. Moine, and A. Sima
Clim. Past, 9, 1001–1014, https://doi.org/10.5194/cp-9-1001-2013, https://doi.org/10.5194/cp-9-1001-2013, 2013
Nils Bochow, Anna Poltronieri, and Niklas Boers
The Cryosphere, 18, 5825–5863, https://doi.org/10.5194/tc-18-5825-2024, https://doi.org/10.5194/tc-18-5825-2024, 2024
Short summary
Short summary
Using the latest climate models, we update the understanding of how the Greenland ice sheet responds to climate changes. We found that precipitation and temperature changes in Greenland vary across different regions. Our findings suggest that using uniform estimates for temperature and precipitation for modelling the response of the ice sheet can overestimate ice loss in Greenland. Therefore, this study highlights the need for spatially resolved data in predicting the ice sheet's future.
Takahito Mitsui, Peter Ditlevsen, Niklas Boers, and Michel Crucifix
Earth Syst. Dynam. Discuss., https://doi.org/10.5194/esd-2024-39, https://doi.org/10.5194/esd-2024-39, 2024
Preprint under review for ESD
Short summary
Short summary
The late Pleistocene glacial cycles are dominated by a 100-kyr periodicity, rather than other major astronomical periods like 19, 23, 41, or 400 kyr. Various models propose distinct mechanisms to explain this, but their diversity may obscure the key factor behind the 100-kyr periodicity. We propose a time-scale matching hypothesis, suggesting that the ice-sheet climate system responds to astronomical forcing at ~100 kyr because its intrinsic timescale is closer to 100 kyr than to other periods.
Clara Hummel, Niklas Boers, and Martin Rypdal
EGUsphere, https://doi.org/10.5194/egusphere-2024-3567, https://doi.org/10.5194/egusphere-2024-3567, 2024
Short summary
Short summary
We revisit early warning signals (EWS) for past abrupt climate changes known as Dansgaard-Oeschger (DO) events. Using advanced statistical methods, we find fewer significant EWS than previously reported. While some signals appear consistent across Greenland ice core records, they are not enough to identify the still unknown physical mechanisms behind DO events. This study highlights the complexity of predicting climate changes and urges caution in interpreting (paleo-)climate data.
Marie-Luise Adolph, Sambor Czerwiński, Mirko Dreßler, Paul Strobel, Marcel Bliedtner, Sebastian Lorenz, Maxime Debret, and Torsten Haberzettl
Clim. Past, 20, 2143–2165, https://doi.org/10.5194/cp-20-2143-2024, https://doi.org/10.5194/cp-20-2143-2024, 2024
Short summary
Short summary
We reconstruct environmental changes derived from sediments of Schweriner See, a large lake in NE Germany, for the past 3000 years. We infer variations in North Atlantic large-scale atmospheric circulation systems, namely the North Atlantic Oscillation (NAO), by combining sedimentological, geochemical, and biological parameters. Our results suggest distinct shifts between positive and negative NAO phases affecting winter temperatures, precipitation, and westerly wind strength at our study site.
Susana Barbosa, Maria Eduarda Silva, and Denis-Didier Rousseau
Nonlin. Processes Geophys., 31, 433–447, https://doi.org/10.5194/npg-31-433-2024, https://doi.org/10.5194/npg-31-433-2024, 2024
Short summary
Short summary
The characterisation of abrupt transitions in palaeoclimate records allows understanding of millennial climate variability and potential tipping points in the context of current climate change. In our study an algorithmic method, the matrix profile, is employed to characterise abrupt warmings designated as Dansgaard–Oeschger (DO) events and to identify the most similar transitions in the palaeoclimate time series.
Vasilis Dakos, Chris A. Boulton, Joshua E. Buxton, Jesse F. Abrams, Beatriz Arellano-Nava, David I. Armstrong McKay, Sebastian Bathiany, Lana Blaschke, Niklas Boers, Daniel Dylewsky, Carlos López-Martínez, Isobel Parry, Paul Ritchie, Bregje van der Bolt, Larissa van der Laan, Els Weinans, and Sonia Kéfi
Earth Syst. Dynam., 15, 1117–1135, https://doi.org/10.5194/esd-15-1117-2024, https://doi.org/10.5194/esd-15-1117-2024, 2024
Short summary
Short summary
Tipping points are abrupt, rapid, and sometimes irreversible changes, and numerous approaches have been proposed to detect them in advance. Such approaches have been termed early warning signals and represent a set of methods for identifying changes in the underlying behaviour of a system across time or space that might indicate an approaching tipping point. Here, we review the literature to explore where, how, and which early warnings have been used in real-world case studies so far.
Maya Ben-Yami, Lana Blaschke, Sebastian Bathiany, and Niklas Boers
EGUsphere, https://doi.org/10.5194/egusphere-2024-1106, https://doi.org/10.5194/egusphere-2024-1106, 2024
Preprint archived
Short summary
Short summary
Recent work has used observations to find statistical signs that the Atlantic Meridional Overturning Circulation (AMOC) may be approaching a collapse. We find that in complex climate models in which the AMOC does not collapse before 2100, the statistical signs that are present in the observations are not found in the 1850–2014 equivalent model time series. This indicates that the observed statistical signs are not prone to false positives.
Takahito Mitsui and Niklas Boers
Clim. Past, 20, 683–699, https://doi.org/10.5194/cp-20-683-2024, https://doi.org/10.5194/cp-20-683-2024, 2024
Short summary
Short summary
In general, the variance and short-lag autocorrelations of the fluctuations increase in a system approaching a critical transition. Using these indicators, we identify statistical precursor signals for the Dansgaard–Oeschger cooling events recorded in two climatic proxies of three Greenland ice core records. We then provide a dynamical systems theory that bridges the gap between observing statistical precursor signals and the physical precursor signs empirically known in paleoclimate research.
Takahito Mitsui, Matteo Willeit, and Niklas Boers
Earth Syst. Dynam., 14, 1277–1294, https://doi.org/10.5194/esd-14-1277-2023, https://doi.org/10.5194/esd-14-1277-2023, 2023
Short summary
Short summary
The glacial–interglacial cycles of the Quaternary exhibit 41 kyr periodicity before the Mid-Pleistocene Transition (MPT) around 1.2–0.8 Myr ago and ~100 kyr periodicity after that. The mechanism generating these periodicities remains elusive. Through an analysis of an Earth system model of intermediate complexity, CLIMBER-2, we show that the dominant periodicities of glacial cycles can be explained from the viewpoint of synchronization theory.
Michael Ghil and Denisse Sciamarella
Nonlin. Processes Geophys., 30, 399–434, https://doi.org/10.5194/npg-30-399-2023, https://doi.org/10.5194/npg-30-399-2023, 2023
Short summary
Short summary
The problem of climate change is that of a chaotic system subject to time-dependent forcing, such as anthropogenic greenhouse gases and natural volcanism. To solve this problem, we describe the mathematics of dynamical systems with explicit time dependence and those of studying their behavior through topological methods. Here, we show how they are being applied to climate change and its predictability.
Mathias Vinnepand, Peter Fischer, Ulrich Hambach, Olaf Jöris, Carol-Ann Craig, Christian Zeeden, Barry Thornton, Thomas Tütken, Charlotte Prud'homme, Philipp Schulte, Olivier Moine, Kathryn E. Fitzsimmons, Christian Laag, Frank Lehmkuhl, Wolfgang Schirmer, and Andreas Vött
E&G Quaternary Sci. J., 72, 163–184, https://doi.org/10.5194/egqsj-72-163-2023, https://doi.org/10.5194/egqsj-72-163-2023, 2023
Short summary
Short summary
Loess–palaeosol sequences (LPSs) represent continental and non-aquatic archives providing detailed information on Quaternary environmental and climate changes. We present an integrative approach combining sedimentological, rock magnetic, and bulk geochemical data, as well as information on Sr and Nd isotope composition. The approach adds to a comprehensive understanding of LPS formation including changes in dust composition and associated circulation patterns during Quaternary climate changes.
Sara M. Vallejo-Bernal, Frederik Wolf, Niklas Boers, Dominik Traxl, Norbert Marwan, and Jürgen Kurths
Hydrol. Earth Syst. Sci., 27, 2645–2660, https://doi.org/10.5194/hess-27-2645-2023, https://doi.org/10.5194/hess-27-2645-2023, 2023
Short summary
Short summary
Employing event synchronization and complex networks analysis, we reveal a cascade of heavy rainfall events, related to intense atmospheric rivers (ARs): heavy precipitation events (HPEs) in western North America (NA) that occur in the aftermath of land-falling ARs are synchronized with HPEs in central and eastern Canada with a delay of up to 12 d. Understanding the effects of ARs in the rainfall over NA will lead to better anticipating the evolution of the climate dynamics in the region.
Maximilian Gelbrecht, Alistair White, Sebastian Bathiany, and Niklas Boers
Geosci. Model Dev., 16, 3123–3135, https://doi.org/10.5194/gmd-16-3123-2023, https://doi.org/10.5194/gmd-16-3123-2023, 2023
Short summary
Short summary
Differential programming is a technique that enables the automatic computation of derivatives of the output of models with respect to model parameters. Applying these techniques to Earth system modeling leverages the increasing availability of high-quality data to improve the models themselves. This can be done by either using calibration techniques that use gradient-based optimization or incorporating machine learning methods that can learn previously unresolved influences directly from data.
Keno Riechers, Leonardo Rydin Gorjão, Forough Hassanibesheli, Pedro G. Lind, Dirk Witthaut, and Niklas Boers
Earth Syst. Dynam., 14, 593–607, https://doi.org/10.5194/esd-14-593-2023, https://doi.org/10.5194/esd-14-593-2023, 2023
Short summary
Short summary
Paleoclimate proxy records show that the North Atlantic climate repeatedly transitioned between two regimes during the last glacial interval. This study investigates a bivariate proxy record from a Greenland ice core which reflects past Greenland temperatures and large-scale atmospheric conditions. We reconstruct the underlying deterministic drift by estimating first-order Kramers–Moyal coefficients and identify two separate stable states in agreement with the aforementioned climatic regimes.
Taylor Smith, Ruxandra-Maria Zotta, Chris A. Boulton, Timothy M. Lenton, Wouter Dorigo, and Niklas Boers
Earth Syst. Dynam., 14, 173–183, https://doi.org/10.5194/esd-14-173-2023, https://doi.org/10.5194/esd-14-173-2023, 2023
Short summary
Short summary
Multi-instrument records with varying signal-to-noise ratios are becoming increasingly common as legacy sensors are upgraded, and data sets are modernized. Induced changes in higher-order statistics such as the autocorrelation and variance are not always well captured by cross-calibration schemes. Here we investigate using synthetic examples how strong resulting biases can be and how they can be avoided in order to make reliable statements about changes in the resilience of a system.
Solène Quéro, Christine Hatté, Sophie Cornu, Adrien Duvivier, Nithavong Cam, Floriane Jamoteau, Daniel Borschneck, and Isabelle Basile-Doelsch
SOIL, 8, 517–539, https://doi.org/10.5194/soil-8-517-2022, https://doi.org/10.5194/soil-8-517-2022, 2022
Short summary
Short summary
Although present in food security key areas, Arenosols carbon stocks are barely studied. A 150-year-old land use change in a Mediterranean Arenosol showed a loss from 50 Gt C ha-1 to 3 Gt C ha-1 after grape cultivation. 14C showed that deep ploughing in a vineyard plot redistributed the remaining microbial carbon both vertically and horizontally. Despite the drastic degradation of the organic matter pool, Arenosols would have a high carbon storage potential, targeting the 4 per 1000 initiative.
Eirik Myrvoll-Nilsen, Keno Riechers, Martin Wibe Rypdal, and Niklas Boers
Clim. Past, 18, 1275–1294, https://doi.org/10.5194/cp-18-1275-2022, https://doi.org/10.5194/cp-18-1275-2022, 2022
Short summary
Short summary
In layer counted proxy records each measurement is accompanied by a timestamp typically measured by counting periodic layers. Knowledge of the uncertainty of this timestamp is important for a rigorous propagation to further analyses. By assuming a Bayesian regression model to the layer increments we express the dating uncertainty by the posterior distribution, from which chronologies can be sampled efficiently. We apply our framework to dating abrupt warming transitions during the last glacial.
Keno Riechers, Takahito Mitsui, Niklas Boers, and Michael Ghil
Clim. Past, 18, 863–893, https://doi.org/10.5194/cp-18-863-2022, https://doi.org/10.5194/cp-18-863-2022, 2022
Short summary
Short summary
Building upon Milancovic's theory of orbital forcing, this paper reviews the interplay between intrinsic variability and external forcing in the emergence of glacial interglacial cycles. It provides the reader with historical background information and with basic theoretical concepts used in recent paleoclimate research. Moreover, it presents new results which confirm the reduced stability of glacial-cycle dynamics after the mid-Pleistocene transition.
Ludwig Zöller, Manfred Fischer, Zdzisław Jary, Pierre Antoine, and Marcin Krawczyk
E&G Quaternary Sci. J., 71, 59–81, https://doi.org/10.5194/egqsj-71-59-2022, https://doi.org/10.5194/egqsj-71-59-2022, 2022
Short summary
Short summary
Comparing quartz optically stimulated luminescence (OSL) and fine-grain post-infrared infrared stimulated luminescence (pIRIR) ages, agreement was largely found, e.g. the bracketing of the L1SS1 pedocomplex to ca. 30–40 ka. Nevertheless some age differences between the Bayreuth (OSL) and the Gliwice (pIRIR) data invite further discussion. Exact dating using various protocols and grain sizes remains challenging, in particular for a periglacial environment with strong heterogeneity of material.
Denis-Didier Rousseau, Witold Bagniewski, and Michael Ghil
Clim. Past, 18, 249–271, https://doi.org/10.5194/cp-18-249-2022, https://doi.org/10.5194/cp-18-249-2022, 2022
Short summary
Short summary
The study of abrupt climate changes is a relatively new field of research that addresses paleoclimate variations that occur in intervals of tens to hundreds of years. Such timescales are much shorter than the tens to hundreds of thousands of years that the astronomical theory of climate addresses. We revisit several high-resolution proxy records of the past 3.2 Myr and show that the abrupt climate changes are nevertheless affected by the orbitally induced insolation changes.
Papa Mamadou Sitor Ndour, Christine Hatté, Wafa Achouak, Thierry Heulin, and Laurent Cournac
SOIL, 8, 49–57, https://doi.org/10.5194/soil-8-49-2022, https://doi.org/10.5194/soil-8-49-2022, 2022
Short summary
Short summary
Unravelling relationships between plant rhizosheath, root exudation and soil C dynamic may bring interesting perspectives in breeding for sustainable agriculture. Using four pearl millet lines with contrasting rhizosheaths, we found that δ13C and F14C of root-adhering soil differed from those of bulk and control soil, indicating C exudation in the rhizosphere. This C exudation varied according to the genotype, and conceptual modelling performed with data showed a genotypic effect on the RPE.
Thomas Kolb, Konrad Tudyka, Annette Kadereit, Johanna Lomax, Grzegorz Poręba, Anja Zander, Lars Zipf, and Markus Fuchs
Geochronology, 4, 1–31, https://doi.org/10.5194/gchron-4-1-2022, https://doi.org/10.5194/gchron-4-1-2022, 2022
Short summary
Short summary
The µDose system is an innovative analytical instrument developed for the cost- and time-efficient determination of environmental radionuclide concentrations required for the calculation of sedimentation ages in palaeo-environmental and geo-archaeological research. The results of our study suggest that accuracy and precision of µDose measurements are comparable to those of well-established methods and that the new approach shows the potential to become a standard tool in environmental dosimetry.
Dominik Faust and Markus Fuchs
E&G Quaternary Sci. J., 70, 243–246, https://doi.org/10.5194/egqsj-70-243-2021, https://doi.org/10.5194/egqsj-70-243-2021, 2021
Denis-Didier Rousseau
E&G Quaternary Sci. J., 70, 229–233, https://doi.org/10.5194/egqsj-70-229-2021, https://doi.org/10.5194/egqsj-70-229-2021, 2021
Short summary
Short summary
A year after his doctoral thesis, Ložek chose to share with the international community not only his vision but also the one that the Czechoslovakian researchers working on loess deposits had at that time, through a paper published in the well-established E&G journal. It represented a detailed and complete state of the art of loess and mollusc studies at that time, an extraordinarily synthetic review that still yields a modern flavor as many of the points made remain relevant today.
Frank Preusser, Markus Fuchs, and Christine Thiel
E&G Quaternary Sci. J., 70, 201–203, https://doi.org/10.5194/egqsj-70-201-2021, https://doi.org/10.5194/egqsj-70-201-2021, 2021
Frank Preusser, Markus Fuchs, and Christine Thiel
DEUQUA Spec. Pub., 3, 1–3, https://doi.org/10.5194/deuquasp-3-1-2021, https://doi.org/10.5194/deuquasp-3-1-2021, 2021
Kim H. Stadelmaier, Patrick Ludwig, Pascal Bertran, Pierre Antoine, Xiaoxu Shi, Gerrit Lohmann, and Joaquim G. Pinto
Clim. Past, 17, 2559–2576, https://doi.org/10.5194/cp-17-2559-2021, https://doi.org/10.5194/cp-17-2559-2021, 2021
Short summary
Short summary
We use regional climate simulations for the Last Glacial Maximum to reconstruct permafrost and to identify areas of thermal contraction cracking of the ground in western Europe. We find ground cracking, a precondition for the development of permafrost proxies, south of the probable permafrost border, implying that permafrost was not the limiting factor for proxy development. A good agreement with permafrost and climate proxy data is achieved when easterly winds are modelled more frequently.
Eviatar Bach and Michael Ghil
Nonlin. Processes Geophys. Discuss., https://doi.org/10.5194/npg-2021-35, https://doi.org/10.5194/npg-2021-35, 2021
Preprint withdrawn
Short summary
Short summary
Data assimilation (DA) is the process of combining model forecasts with observations in order to provide an optimal estimate of the system state. When models are imperfect, the uncertainty in the forecasts may be underestimated, requiring inflation of the corresponding error covariance. Here, we present a simple method for estimating the magnitude and structure of the model error covariance matrix. We demonstrate the efficacy of this method with idealized experiments.
Keno Riechers and Niklas Boers
Clim. Past, 17, 1751–1775, https://doi.org/10.5194/cp-17-1751-2021, https://doi.org/10.5194/cp-17-1751-2021, 2021
Short summary
Short summary
Greenland ice core data show that the last glacial cycle was punctuated by a series of abrupt climate shifts comprising significant warming over Greenland, retreat of North Atlantic sea ice, and atmospheric reorganization. Statistical analysis of multi-proxy records reveals no systematic lead or lag between the transitions of proxies that represent different climatic subsystems, and hence no evidence for a potential trigger of these so-called Dansgaard–Oeschger events can be found.
Sascha Scherer, Benjamin Höpfer, Katleen Deckers, Elske Fischer, Markus Fuchs, Ellen Kandeler, Jutta Lechterbeck, Eva Lehndorff, Johanna Lomax, Sven Marhan, Elena Marinova, Julia Meister, Christian Poll, Humay Rahimova, Manfred Rösch, Kristen Wroth, Julia Zastrow, Thomas Knopf, Thomas Scholten, and Peter Kühn
SOIL, 7, 269–304, https://doi.org/10.5194/soil-7-269-2021, https://doi.org/10.5194/soil-7-269-2021, 2021
Short summary
Short summary
This paper aims to reconstruct Middle Bronze Age (MBA) land use practices in the northwestern Alpine foreland (SW Germany, Hegau). We used a multi-proxy approach including biogeochemical proxies from colluvial deposits in the surroundings of a MBA settlement, on-site archaeobotanical and zooarchaeological data and off-site pollen data. From our data we infer land use practices such as plowing, cereal growth, forest farming and use of fire that marked the beginning of major colluvial deposition.
Michael Ghil
Nonlin. Processes Geophys., 27, 429–451, https://doi.org/10.5194/npg-27-429-2020, https://doi.org/10.5194/npg-27-429-2020, 2020
Short summary
Short summary
The scientific questions posed by the climate sciences are central to socioeconomic concerns today. This paper revisits several crucial questions, starting with
What can we predict beyond 1 week, for how long, and by what methods?, and ending with
Can we achieve enlightened climate control of our planet by the end of the century?We review the progress in dealing with the nonlinearity and stochasticity of the Earth system and emphasize major strides in coupled climate–economy modeling.
André-Marie Dendievel, Brice Mourier, Alexandra Coynel, Olivier Evrard, Pierre Labadie, Sophie Ayrault, Maxime Debret, Florence Koltalo, Yoann Copard, Quentin Faivre, Thomas Gardes, Sophia Vauclin, Hélène Budzinski, Cécile Grosbois, Thierry Winiarski, and Marc Desmet
Earth Syst. Sci. Data, 12, 1153–1170, https://doi.org/10.5194/essd-12-1153-2020, https://doi.org/10.5194/essd-12-1153-2020, 2020
Short summary
Short summary
Polychlorinated biphenyl indicators (ΣPCBi) from sediment cores, bed and flood deposits, suspended particulate matter, and dredged sediments along the major French rivers (1945–2018) are compared with socio-hydrological drivers. ΣPCBi increased from 1945 to the 1990s due to urban and industrial emissions. It gradually decreased with the implementation of regulations. Specific ΣPCBi fluxes reveal the amount of PCB-polluted sediment transported by French rivers to European seas over 40 years.
Zhongshi Zhang, Qing Yan, Ran Zhang, Florence Colleoni, Gilles Ramstein, Gaowen Dai, Martin Jakobsson, Matt O'Regan, Stefan Liess, Denis-Didier Rousseau, Naiqing Wu, Elizabeth J. Farmer, Camille Contoux, Chuncheng Guo, Ning Tan, and Zhengtang Guo
Clim. Past Discuss., https://doi.org/10.5194/cp-2020-38, https://doi.org/10.5194/cp-2020-38, 2020
Manuscript not accepted for further review
Short summary
Short summary
Whether an ice sheet once grew over Northeast Siberia-Beringia has been debated for decades. By comparing climate modelling with paleoclimate and glacial records from around the North Pacific, this study shows that the Laurentide-Eurasia-only ice sheet configuration fails in explaining these records, while a scenario involving the ice sheet over Northeast Siberia-Beringia succeeds. It highlights the complexity in glacial climates and urges new investigations across Northeast Siberia-Beringia.
Pierre Sabatier, Marie Nicolle, Christine Piot, Christophe Colin, Maxime Debret, Didier Swingedouw, Yves Perrette, Marie-Charlotte Bellingery, Benjamin Chazeau, Anne-Lise Develle, Maxime Leblanc, Charlotte Skonieczny, Yoann Copard, Jean-Louis Reyss, Emmanuel Malet, Isabelle Jouffroy-Bapicot, Maëlle Kelner, Jérôme Poulenard, Julien Didier, Fabien Arnaud, and Boris Vannière
Clim. Past, 16, 283–298, https://doi.org/10.5194/cp-16-283-2020, https://doi.org/10.5194/cp-16-283-2020, 2020
Short summary
Short summary
High-resolution multiproxy analysis of sediment core from a high-elevation lake on Corsica allows us to reconstruct past African dust inputs to the western Mediterranean area over the last 3 millennia. Millennial variations of Saharan dust input have been correlated with the long-term southward migration of the Intertropical Convergence Zone, while short-term variations were associated with the North Atlantic Oscillation and total solar irradiance after and before 1070 cal BP, respectively.
Christopher Lüthgens, Daniela Sauer, Michael Zech, Becky Briant, Eleanor Brown, Elisabeth Dietze, Markus Fuchs, Nicole Klasen, Sven Lukas, Jan-Hendrik May, Julia Meister, Tony Reimann, Gilles Rixhon, Zsófia Ruszkiczay-Rüdiger, Bernhard Salcher, Tobias Sprafke, Ingmar Unkel, Hans von Suchodoletz, and Christian Zeeden
E&G Quaternary Sci. J., 68, 243–244, https://doi.org/10.5194/egqsj-68-243-2020, https://doi.org/10.5194/egqsj-68-243-2020, 2020
Johanna Lomax, Thomas Kolb, and Markus Fuchs
E&G Quaternary Sci. J., 68, 241–242, https://doi.org/10.5194/egqsj-68-241-2020, https://doi.org/10.5194/egqsj-68-241-2020, 2020
Corey R. Lawrence, Jeffrey Beem-Miller, Alison M. Hoyt, Grey Monroe, Carlos A. Sierra, Shane Stoner, Katherine Heckman, Joseph C. Blankinship, Susan E. Crow, Gavin McNicol, Susan Trumbore, Paul A. Levine, Olga Vindušková, Katherine Todd-Brown, Craig Rasmussen, Caitlin E. Hicks Pries, Christina Schädel, Karis McFarlane, Sebastian Doetterl, Christine Hatté, Yujie He, Claire Treat, Jennifer W. Harden, Margaret S. Torn, Cristian Estop-Aragonés, Asmeret Asefaw Berhe, Marco Keiluweit, Ágatha Della Rosa Kuhnen, Erika Marin-Spiotta, Alain F. Plante, Aaron Thompson, Zheng Shi, Joshua P. Schimel, Lydia J. S. Vaughn, Sophie F. von Fromm, and Rota Wagai
Earth Syst. Sci. Data, 12, 61–76, https://doi.org/10.5194/essd-12-61-2020, https://doi.org/10.5194/essd-12-61-2020, 2020
Short summary
Short summary
The International Soil Radiocarbon Database (ISRaD) is an an open-source archive of soil data focused on datasets including radiocarbon measurements. ISRaD includes data from bulk or
whole soils, distinct soil carbon pools isolated in the laboratory by a variety of soil fractionation methods, samples of soil gas or water collected interstitially from within an intact soil profile, CO2 gas isolated from laboratory soil incubations, and fluxes collected in situ from a soil surface.
Jan Johannes Miera, Jessica Henkner, Karsten Schmidt, Markus Fuchs, Thomas Scholten, Peter Kühn, and Thomas Knopf
E&G Quaternary Sci. J., 68, 75–93, https://doi.org/10.5194/egqsj-68-75-2019, https://doi.org/10.5194/egqsj-68-75-2019, 2019
Short summary
Short summary
This study investigates Neolithic settlement dynamics by combining archaeological source criticism and archaeopedological data from colluvial deposits. It is shown that the distribution of Neolithic sites in the Baar region is distorted by superimposition due to erosion. Furthermore, the preservation conditions for pottery are limited by weathering effects. By complementing archaeological data with phases of colluviation we are able to point out settlement dynamics throughout the Neolithic.
Marwa Tifafi, Marta Camino-Serrano, Christine Hatté, Hector Morras, Lucas Moretti, Sebastián Barbaro, Sophie Cornu, and Bertrand Guenet
Geosci. Model Dev., 11, 4711–4726, https://doi.org/10.5194/gmd-11-4711-2018, https://doi.org/10.5194/gmd-11-4711-2018, 2018
Short summary
Short summary
The role of soil carbon in climate dynamics becomes one of the major uncertainties in land surface models. This work is a presentation of a new version of the land surface model called ORCHIDEE incorporating the radiocarbon (14C) used as integrator of the soil carbon dynamics. It has been possible to highlight an underestimation of the age of carbon in the soil and that model improvements should focus more on a depth-dependent parameterization mainly for the diffusion.
Stefano Pierini, Mickaël D. Chekroun, and Michael Ghil
Nonlin. Processes Geophys., 25, 671–692, https://doi.org/10.5194/npg-25-671-2018, https://doi.org/10.5194/npg-25-671-2018, 2018
Short summary
Short summary
A four-dimensional nonlinear spectral ocean model is used to study the transition to chaos induced by periodic forcing in systems that are nonchaotic in the autonomous limit. The analysis makes use of ensemble simulations and of the system's pullback attractors. A new diagnostic method characterizes the transition to chaos: this is found to occur abruptly at a critical value and begins with the intermittent emergence of periodic oscillations with distinct phases.
Markus Fuchs
DEUQUA Spec. Pub., 1, 1–2, https://doi.org/10.5194/deuquasp-1-1-2018, https://doi.org/10.5194/deuquasp-1-1-2018, 2018
Johanna Lomax, Raphael Steup, Lyudmila Shumilovskikh, Christian Hoselmann, Daniela Sauer, Veit van Diedenhoven, and Markus Fuchs
DEUQUA Spec. Pub., 1, 15–28, https://doi.org/10.5194/deuquasp-1-15-2018, https://doi.org/10.5194/deuquasp-1-15-2018, 2018
Hans W. Linderholm, Marie Nicolle, Pierre Francus, Konrad Gajewski, Samuli Helama, Atte Korhola, Olga Solomina, Zicheng Yu, Peng Zhang, William J. D'Andrea, Maxime Debret, Dmitry V. Divine, Björn E. Gunnarson, Neil J. Loader, Nicolas Massei, Kristina Seftigen, Elizabeth K. Thomas, Johannes Werner, Sofia Andersson, Annika Berntsson, Tomi P. Luoto, Liisa Nevalainen, Saija Saarni, and Minna Väliranta
Clim. Past, 14, 473–514, https://doi.org/10.5194/cp-14-473-2018, https://doi.org/10.5194/cp-14-473-2018, 2018
Short summary
Short summary
This paper reviews the current knowledge of Arctic hydroclimate variability during the past 2000 years. We discuss the current state, look into the future, and describe various archives and proxies used to infer past hydroclimate variability. We also provide regional overviews and discuss the potential of furthering our understanding of Arctic hydroclimate in the past. This paper summarises the hydroclimate-related activities of the Arctic 2k group.
Esther Hintersberger, Kurt Decker, Johanna Lomax, and Christopher Lüthgens
Nat. Hazards Earth Syst. Sci., 18, 531–553, https://doi.org/10.5194/nhess-18-531-2018, https://doi.org/10.5194/nhess-18-531-2018, 2018
Short summary
Short summary
The Vienna Basin is a low seismicity area, where historical data do not identify all potential earthquake sources. Despite observed Quaternary offset, there are no earthquakes along the Markgrafneusiedl Fault (MF). Results from 3 palaeoseismic trenches show evidence for 5–6 earthquakes with magnitudes up to M = 6.8 during the last 120 kyr. Therefore the MF should be considered as a seismic source, together with similar faults in the Vienna Basin, increasing the seismic potential close to Vienna.
Niklas Boers, Mickael D. Chekroun, Honghu Liu, Dmitri Kondrashov, Denis-Didier Rousseau, Anders Svensson, Matthias Bigler, and Michael Ghil
Earth Syst. Dynam., 8, 1171–1190, https://doi.org/10.5194/esd-8-1171-2017, https://doi.org/10.5194/esd-8-1171-2017, 2017
Short summary
Short summary
We use a Bayesian approach for inferring inverse, stochastic–dynamic models from northern Greenland (NGRIP) oxygen and dust records of subdecadal resolution for the interval 59 to 22 ka b2k. Our model reproduces the statistical and dynamical characteristics of the records, including the Dansgaard–Oeschger variability, with no need for external forcing. The crucial ingredients are cubic drift terms, nonlinear coupling terms between the oxygen and dust time series, and non-Markovian contributions.
Denis-Didier Rousseau, Anders Svensson, Matthias Bigler, Adriana Sima, Jorgen Peder Steffensen, and Niklas Boers
Clim. Past, 13, 1181–1197, https://doi.org/10.5194/cp-13-1181-2017, https://doi.org/10.5194/cp-13-1181-2017, 2017
Short summary
Short summary
We show that the analysis of δ18O and dust in the Greenland ice cores, and a critical study of their source variations, reconciles these records with those observed on the Eurasian continent. We demonstrate the link between European and Chinese loess sequences, dust records in Greenland, and variations in the North Atlantic sea ice extent. The sources of the emitted and transported dust material are variable and relate to different environments.
Niklas Boers, Bedartha Goswami, and Michael Ghil
Clim. Past, 13, 1169–1180, https://doi.org/10.5194/cp-13-1169-2017, https://doi.org/10.5194/cp-13-1169-2017, 2017
Short summary
Short summary
We introduce a Bayesian framework to represent layer-counted proxy records as probability distributions on error-free time axes, accounting for both proxy and dating errors. Our method is applied to NGRIP δ18O data, revealing that the cumulative dating errors lead to substantial uncertainties for the older parts of the record. Applying our method to the widely used radiocarbon comparison curve derived from varved sediments of Lake Suigetsu provides the complete uncertainties of this curve.
Keroboto B. Z. Ogutu, Fabio D'Andrea, Michael Ghil, and Charles Nyandwi
Earth Syst. Dynam. Discuss., https://doi.org/10.5194/esd-2016-64, https://doi.org/10.5194/esd-2016-64, 2017
Preprint retracted
Short summary
Short summary
The CoCEB model is used to evaluate hypotheses on the long-term effect of investment in emission abatement, and on the comparative efficacy of different approaches to abatement. While many studies in the literature treat abatement costs as an unproductive loss of income, we show that mitigation costs do slow down economic growth over the next few decades, but only up to the mid-21st century or even earlier; growth reduction is compensated later on by having avoided climate negative impacts.
Alexia Paul, Christine Hatté, Lucie Pastor, Yves Thiry, Françoise Siclet, and Jérôme Balesdent
Biogeosciences, 13, 6587–6598, https://doi.org/10.5194/bg-13-6587-2016, https://doi.org/10.5194/bg-13-6587-2016, 2016
Short summary
Short summary
The terrestrial environment has been affected by tritium contamination. There is a need to assess the dynamics of organic hydrogen in soils in order to predict the fate of tritium. In the present study we traced carbon and hydrogen from plant-derived molecules and hydrogen from water in different soil types. The main findings of the work are that water is the main donor of organic hydrogen and the long-term fate of hydrogen (and tritium) will depend on the status of soil carbon dynamics.
J. Rombouts and M. Ghil
Nonlin. Processes Geophys., 22, 275–288, https://doi.org/10.5194/npg-22-275-2015, https://doi.org/10.5194/npg-22-275-2015, 2015
Short summary
Short summary
Our conceptual model describes global temperature and vegetation extent. We use elements from Daisyworld and classical energy balance models and add an ocean with sea ice. The model exhibits oscillatory behavior within a plausible range of parameter values.
Its periodic solutions have sawtooth behavior that is characteristic of relaxation oscillations, as well as suggestive of Quaternary glaciation cycles. The model is one of the simplest of its kind to produce such oscillatory behavior.
É. Boucher, J. Guiot, C. Hatté, V. Daux, P.-A. Danis, and P. Dussouillez
Biogeosciences, 11, 3245–3258, https://doi.org/10.5194/bg-11-3245-2014, https://doi.org/10.5194/bg-11-3245-2014, 2014
D.-D. Rousseau, M. Ghil, G. Kukla, A. Sima, P. Antoine, M. Fuchs, C. Hatté, F. Lagroix, M. Debret, and O. Moine
Clim. Past, 9, 2213–2230, https://doi.org/10.5194/cp-9-2213-2013, https://doi.org/10.5194/cp-9-2213-2013, 2013
M. Magny, N. Combourieu-Nebout, J. L. de Beaulieu, V. Bout-Roumazeilles, D. Colombaroli, S. Desprat, A. Francke, S. Joannin, E. Ortu, O. Peyron, M. Revel, L. Sadori, G. Siani, M. A. Sicre, S. Samartin, A. Simonneau, W. Tinner, B. Vannière, B. Wagner, G. Zanchetta, F. Anselmetti, E. Brugiapaglia, E. Chapron, M. Debret, M. Desmet, J. Didier, L. Essallami, D. Galop, A. Gilli, J. N. Haas, N. Kallel, L. Millet, A. Stock, J. L. Turon, and S. Wirth
Clim. Past, 9, 2043–2071, https://doi.org/10.5194/cp-9-2043-2013, https://doi.org/10.5194/cp-9-2043-2013, 2013
A. Sima, M. Kageyama, D.-D. Rousseau, G. Ramstein, Y. Balkanski, P. Antoine, and C. Hatté
Clim. Past, 9, 1385–1402, https://doi.org/10.5194/cp-9-1385-2013, https://doi.org/10.5194/cp-9-1385-2013, 2013
C. Hatté, C. Gauthier, D.-D. Rousseau, P. Antoine, M. Fuchs, F. Lagroix, S. B. Marković, O. Moine, and A. Sima
Clim. Past, 9, 1001–1014, https://doi.org/10.5194/cp-9-1001-2013, https://doi.org/10.5194/cp-9-1001-2013, 2013
J. Dabkowski, J. Andrews, P. Antoine, and A. Marca-Bell
Clim. Past Discuss., https://doi.org/10.5194/cpd-9-1657-2013, https://doi.org/10.5194/cpd-9-1657-2013, 2013
Revised manuscript not accepted
Related subject area
Subject: Proxy Use-Development-Validation | Archive: Terrestrial Archives | Timescale: Millenial/D-O
Hydrological change in southern Australia over 1750 years: a bivalve oxygen isotope record from the Coorong Lagoon
Millennial hydrological variability in the continental northern Neotropics during Marine Isotope Stages (MISs) 3–2 (59–15 cal ka BP) inferred from sediments of Lake Petén Itzá, Guatemala
Greenhouse gases modulate the strength of millennial-scale subtropical rainfall, consistent with future predictions
Humidity changes and possible forcing mechanisms over the last millennium in arid Central Asia
Archaeal lipid-inferred paleohydrology and paleotemperature of Lake Chenghai during the Pleistocene–Holocene transition
Differing pre-industrial cooling trends between tree rings and lower-resolution temperature proxies
Evaluating model outputs using integrated global speleothem records of climate change since the last glacial
1200 years of warm-season temperature variability in central Scandinavia inferred from tree-ring density
Hydroclimatic variability in the Levant during the early last glacial (∼ 117–75 ka) derived from micro-facies analyses of deep Dead Sea sediments
Detailed insight into Arctic climatic variability during MIS 11c at Lake El'gygytgyn, NE Russia
Statistical framework for evaluation of climate model simulations by use of climate proxy data from the last millennium – Part 1: Theory
Impact of postglacial warming on borehole reconstructions of last millennium temperatures
Estimating 750 years of temperature variations and uncertainties in the Pyrenees by tree-ring reconstructions and climate simulations
Briony Kate Chamberlayne, Jonathan James Tyler, Deborah Haynes, Yuexiao Shao, John Tibby, and Bronwyn May Gillanders
Clim. Past, 19, 1383–1396, https://doi.org/10.5194/cp-19-1383-2023, https://doi.org/10.5194/cp-19-1383-2023, 2023
Short summary
Short summary
We used geochemical signals in shells preserved in sediments to create a 1750-year record of hydrological change in the Coorong Lagoon of South Australia. The record is interpreted to reflect the balance of evaporation and precipitation and shows that it has always been a highly evaporated system. The record also shows similarities to other environmental reconstructions from the region. This knowledge can increase our understanding of the potential impacts of environmental change.
Rodrigo Martínez-Abarca, Michelle Abstein, Frederik Schenk, David Hodell, Philipp Hoelzmann, Mark Brenner, Steffen Kutterolf, Sergio Cohuo, Laura Macario-González, Mona Stockhecke, Jason Curtis, Flavio S. Anselmetti, Daniel Ariztegui, Thomas Guilderson, Alexander Correa-Metrio, Thorsten Bauersachs, Liseth Pérez, and Antje Schwalb
Clim. Past, 19, 1409–1434, https://doi.org/10.5194/cp-19-1409-2023, https://doi.org/10.5194/cp-19-1409-2023, 2023
Short summary
Short summary
Lake Petén Itzá, northern Guatemala, is one of the oldest lakes in the northern Neotropics. In this study, we analyzed geochemical and mineralogical data to decipher the hydrological response of the lake to climate and environmental changes between 59 and 15 cal ka BP. We also compare the response of Petén Itzá with other regional records to discern the possible climate forcings that influenced them. Short-term climate oscillations such as Greenland interstadials and stadials are also detected.
Fei Guo, Steven Clemens, Yuming Liu, Ting Wang, Huimin Fan, Xingxing Liu, and Youbin Sun
Clim. Past, 18, 1675–1684, https://doi.org/10.5194/cp-18-1675-2022, https://doi.org/10.5194/cp-18-1675-2022, 2022
Short summary
Short summary
Our high-resolution loess Ca/Ti record displays millennial monsoon oscillations that persist over the last 650 kyr. Wavelet results indicate the ice volume and GHG co-modulation at the 100 kyr band and GHG and local insolation forcing at the precession band for the magnitude of millennial monsoon variability of loess Ca/Ti. The inferred mechanism calls on dynamic linkages to variability in AMOC. At the precession band, combined effects of GHG and insolation lead to increased extreme rainfall.
Shengnan Feng, Xingqi Liu, Feng Shi, Xin Mao, Yun Li, and Jiaping Wang
Clim. Past, 18, 975–988, https://doi.org/10.5194/cp-18-975-2022, https://doi.org/10.5194/cp-18-975-2022, 2022
Short summary
Short summary
We present a continuous humidity history in arid Central Asia over the past millennium based on the ~1.8-year high-resolution multiproxy record from Lake Dalongchi. Our findings emphasize that the Gleissberg solar cycle and quasi-regular period of ENSO amplitude play critical roles in controlling the effective humidity at century and multidecadal timescales, respectively. Our analysis provides new insights for hydroclimate predictions and climate simulations in arid Central Asia in the future.
Weiwei Sun, Enlou Zhang, Jie Chang, James Shulmeister, Michael I. Bird, Cheng Zhao, Qingfeng Jiang, and Ji Shen
Clim. Past, 16, 833–845, https://doi.org/10.5194/cp-16-833-2020, https://doi.org/10.5194/cp-16-833-2020, 2020
Lara Klippel, Scott St. George, Ulf Büntgen, Paul J. Krusic, and Jan Esper
Clim. Past, 16, 729–742, https://doi.org/10.5194/cp-16-729-2020, https://doi.org/10.5194/cp-16-729-2020, 2020
Short summary
Short summary
The PAGES2k multiproxy database offers a new and unique opportunity to study the lack of long-term cooling trends in tree-ring data, which can be expected in Northern Hemisphere summers, particularly in the high latitudes, due to orbitally driven changes in solar irradiance. Tests of different influencing factors reveal that preserving millennial-scale cooling trends related to orbital forcing is not feasible in most tree-ring datasets.
Laia Comas-Bru, Sandy P. Harrison, Martin Werner, Kira Rehfeld, Nick Scroxton, Cristina Veiga-Pires, and SISAL working group members
Clim. Past, 15, 1557–1579, https://doi.org/10.5194/cp-15-1557-2019, https://doi.org/10.5194/cp-15-1557-2019, 2019
Short summary
Short summary
We use an updated version of the Speleothem Isotopes Synthesis and Analysis (SISAL) database and palaeoclimate simulations generated using the ECHAM5-wiso isotope-enabled climate model to provide a protocol for using speleothem isotopic data for model evaluation, including screening the observations and the optimum period for the modern observational baseline. We also illustrate techniques through which the absolute isotopic values during any time period could be used for model evaluation.
Peng Zhang, Hans W. Linderholm, Björn E. Gunnarson, Jesper Björklund, and Deliang Chen
Clim. Past, 12, 1297–1312, https://doi.org/10.5194/cp-12-1297-2016, https://doi.org/10.5194/cp-12-1297-2016, 2016
Short summary
Short summary
We present C-Scan, a new Scots pine tree-ring density based reconstruction of warm-season (April-September) temperatures for central Scandinavia back to 850 CE, extending the previous reconstruction by 250 years. Our reconstruction indicates that the warm-season warmth during a relatively-warm period of last millennium is not so pronounced in central Scandinavia, which adds further detail to our knowledge about the spatial pattern of surface air temperature on the regional scale.
I. Neugebauer, M. J. Schwab, N. D. Waldmann, R. Tjallingii, U. Frank, E. Hadzhiivanova, R. Naumann, N. Taha, A. Agnon, Y. Enzel, and A. Brauer
Clim. Past, 12, 75–90, https://doi.org/10.5194/cp-12-75-2016, https://doi.org/10.5194/cp-12-75-2016, 2016
Short summary
Short summary
Micro-facies changes and elemental variations in deep Dead Sea sediments are used to reconstruct relative lake level changes for the early last glacial period. The results indicate a close link of hydroclimatic variability in the Levant to North Atlantic-Mediterranean climates during the time of the build-up of Northern Hemisphere ice shields. First petrographic analyses of gravels in the deep core question the recent hypothesis of a Dead Sea dry-down at the end of the last interglacial.
H. Vogel, C. Meyer-Jacob, M. Melles, J. Brigham-Grette, A. A. Andreev, V. Wennrich, P. E. Tarasov, and P. Rosén
Clim. Past, 9, 1467–1479, https://doi.org/10.5194/cp-9-1467-2013, https://doi.org/10.5194/cp-9-1467-2013, 2013
R. Sundberg, A. Moberg, and A. Hind
Clim. Past, 8, 1339–1353, https://doi.org/10.5194/cp-8-1339-2012, https://doi.org/10.5194/cp-8-1339-2012, 2012
V. Rath, J. F. González Rouco, and H. Goosse
Clim. Past, 8, 1059–1066, https://doi.org/10.5194/cp-8-1059-2012, https://doi.org/10.5194/cp-8-1059-2012, 2012
I. Dorado Liñán, U. Büntgen, F. González-Rouco, E. Zorita, J. P. Montávez, J. J. Gómez-Navarro, M. Brunet, I. Heinrich, G. Helle, and E. Gutiérrez
Clim. Past, 8, 919–933, https://doi.org/10.5194/cp-8-919-2012, https://doi.org/10.5194/cp-8-919-2012, 2012
Cited articles
Alley, R. B.: Palaeoclimatology – Icing the north Atlantic, Nature, 392,
335–337, https://doi.org/10.1038/32781, 1998.
Antoine, P.: High resolution (5 cm) continuous record of grain size and magnetic susceptibility of the 20 m thick loess palaeosol sequence of Harletz, Bulgaria, PANGAEA, https://doi.org/10.1594/PANGAEA.905216, 2019a.
Antoine, P.: High resolution continuous record of color (a*) of the 20 m thick loess palaeosol sequence of Harletz, Bulgaria, PANGAEA, https://doi.org/10.1594/PANGAEA.905214, 2019b.
Antoine, P., Rousseau, D. D., Moine, O., Kunesch, S., Hatté, C., Lang,
A., Tissoux, H., and Zöller, L.: Rapid and cyclic aeolian deposition
during the Last Glacial in European loess: a high-resolution record from
Nussloch, Germany, Quaternary Sci. Rev., 28, 2955–2973,
https://doi.org/10.1016/j.quascirev.2009.08.001, 2009.
Antoine, P., Lagroix, F., Jordanova, D., Jordanova, N., Lomax, J., Fuchs,
M., Debret, M., Rousseau, D. D., Hatté, C., Gauthier, C., Moine, O.,
Taylor, S. N., Till, J. L., and Coutard, S.: A remarkable Late Saalian (MIS
6) loess (dust) accumulation in the Lower Danube at Harletz (Bulgaria),
Quaternary Sci. Rev., 207, 80–100, https://doi.org/10.1016/j.quascirev.2019.01.005,
2019.
Ayalon, A., Bar-Matthews, M., and Kaufman, A.: Climatic conditions during
marine oxygen isotope stage 6 in the eastern Mediterranean region from the
isotopic composition of speleothems of Soreq Cave, Israel, Geology, 30,
303–306, https://doi.org/10.1130/0091-7613(2002)030<0303:ccdmoi>2.0.co;2, 2002.
Balescu, S., Lamothe, M., Panaiotu, C., and Panaiotu, C.: IRSL Chronology of
eastern Romanian loess sequences, Quaternaire, 21, 115–126, 2010.
Bar-Matthews, M., Ayalon, A., Gilmour, M., Matthews, A., and Hawkesworth, C.
J.: Sea-land oxygen isotopic relationships from planktonic foraminifera and
speleothems in the Eastern Mediterranean region and their implication for
paleorainfall during interglacial intervals, Geochim. Cosmochim. Ac., 67, 3181–3199, https://doi.org/10.1016/s0016-7037(02)01031-1, 2003a.
Bar-Matthews, M., Ayalon, A., Gilmour, M., Matthews, A., and Hawkesworth, C. J.: Soreq and Peqiin Caves, Israel Speleothem Stable Isotope Data, IGBP PAGES/World Data Center for Paleoclimatology, Data Contribution Series #2003-061, NOAA/NGDC Paleoclimatology Program, Boulder CO, USA, available at: https://www.ncdc.noaa.gov/paleo-search/study/5423 (last access: 8 December 2018), 2003b.
Bard, E., Delaygue, G., Rostek, F., Antonioli, F., Silenzi, S., and Schrag,
D. P.: Hydrological conditions over the western Mediterranean basin during
the deposition of the cold Sapropel 6 (ca. 175 kyr BP), Earth Planet.
Sc. Lett., 202, 481–494, https://doi.org/10.1016/s0012-821x(02)00788-4, 2002.
Barker, S., Knorr, G., Edwards, R. L., Parrenin, F., Putnam, A. E., Skinner,
L. C., Wolff, E., and Ziegler, M.: 800,000 Years of Abrupt Climate
Variability, Science, 334, 347–351, https://doi.org/10.1126/science.1203580, 2011.
Barker, S., Chen, J., Gong, X., Jonkers, L., Knorr, G., and Thornalley, D.:
Icebergs not the trigger for North Atlantic cold events, Nature, 520,
333–336, https://doi.org/10.1038/nature14330, 2015.
Boers, N., Chekroun, M. D., Liu, H., Kondrashov, D., Rousseau, D.-D., Svensson, A., Bigler, M., and Ghil, M.: Inverse stochastic–dynamic models for high-resolution Greenland ice core records, Earth Syst. Dynam., 8, 1171–1190, https://doi.org/10.5194/esd-8-1171-2017, 2017.
Boers, N., Ghil, M., and Rousseau, D. D.: Ocean circulation, ice shelf, and
sea ice interactions explain Dansgaard-Oeschger cycles, P. Natl. Acad. Sci. USA, 115, E11005–E11014, https://doi.org/10.1073/pnas.1802573115, 2018.
Bond, G., Heinrich, H., Broecker, W., Labeyrie, L., McManus, J., Andrews,
J., Huon, S., Jantschik, R., Clasen, S., Simet, C., Tedesco, K., Klas, M.,
Bonani, G., and Ivy, S.: Evidence for massive discharges of icebergs into
the North Atlantic Ocean during the last glacial period, Nature, 360,
245–249, 1992.
Broecker, W. S.: Massive iceberg discharges as triggers for global climate
change, Nature, 372, 421–424, 1994.
Buggle, B., Hambach, U., Glaser, B., Gerasimenko, N., Markovic, S., Glaser,
I., and Zoeller, L.: Stratigraphy, and spatial and temporal paleoclimatic
trends in Southeastern/Eastern European loess-paleosol sequences, Quatern.
Int., 196, 86–106, https://doi.org/10.1016/j.quaint.2008.07.013, 2009.
Cheng, H., Edwards, R. L., Wan, Y. J., Ko, X. G., Ming, Y. F., Kelly, M. J.,
Wang, X. F., Gallup, C. D., and Liu, W. G.: A penultimate glacial monsoon
record from Hulu Cave and two-phase glacial terminations, Geology, 34,
217–220, 2006.
Clark, P. U., Alley, R. B., and Pollard, D.: Climatology – Northern
hemisphere ice-sheet influences on global climate change, Science, 286,
1104–1111, https://doi.org/10.1126/science.286.5442.1104, 1999.
Clark, P. U., Hostetler, S. W., Pisias, N. G., Schmittner, A., and Meissner,
K. J.: Mechanisms for an ∼7-Kyr Climate and Sea‐Level Oscillation During Marine Isotope Stage 3, in: Ocean Circulation: Mechanisms and Impacts–Past and Future Changes of Meridional Overturning, edited by: Schmittner, A., Chiang, J. C. H., and Hemming, S. R., Geoph. Monog. Series, 173, 209–246, https://doi.org/10.1029/173GM15, 2007.
Dansgaard, W., Johnsen, S. J., Clausen, H. B., Dahi-Jensen, D., Gundestrup,
N. S., Hammer, C. U., Hvidberg, C. S., Steffensen, J. P., Sveinbjöprnsdottir, A. E., Jouzel, J., and Bond, G.: Evidence for
general instability of past climate from a 250-kyr ice-core record, Nature,
364, 218–220, 1993.
Dendy, S., Austermann, J., Creveling, J. R., and Mitrovica, J. X.:
Sensitivity of Last Interglacial sea-level high stands to ice sheet
configuration during Marine Isotope Stage 6, Quaternary Sci. Rev.,
171, 234–244, https://doi.org/10.1016/j.quascirev.2017.06.013, 2017.
Fischer, H., Schuepbach, S., Gfeller, G., Bigler, M., Roethlisberger, R.,
Erhardt, T., Stocker, T. F., Mulvaney, R., and Wolff, E.: Millennial changes
in North American wildfire and soil activity over the last glacial cycle,
Nat. Geosci., 8, 723–727, https://doi.org/10.1038/ngeo2495, 2015.
Fletcher, W. J., Goni, M. F. S., Allen, J. R. M., Cheddadi, R.,
Combourieu-Nebout, N., Huntley, B., Lawson, I., Londeix, L., Magri, D.,
Margari, V., Mueller, U. C., Naughton, F., Novenko, E., Roucoux, K., and
Tzedakis, P. C.: Millennial-scale variability during the last glacial in
vegetation records from Europe, Quaternary Sci. Rev., 29, 2839–2864,
https://doi.org/10.1016/j.quascirev.2009.11.015, 2010.
Fuchs, M., Rousseau, D.-D., Antoine, P., Hatte, C., Gauthier, C., Markovic,
S., and Zoeller, L.: Chronology of the last climatic cycle (upper
pleistocene) of the Surduk loess sequence, Vojvodina, Serbia, Boreas, 37,
66–73, https://doi.org/10.1111/j.1502-3885.2007.00012.x, 2008.
Giraudi, C. and Giaccio, B.: Middle Pleistocene glaciations in the
Apennines, Italy: new chronological data and preservation of the glacial
record, in: Quaternary Glaciation in the Mediterranean Mountains, edited by:
Hughes, P. D. and Woodward, J. C., Geological Society Special Publication,
161–178, 2017.
Haesaerts, P., Damblon, F., Gerasimenko, N., Spagna, P., and Pirson, S.: The
Late Pleistocene loess-palaeosol sequence of Middle Belgium, Quatern. Int., 411, 25–43, https://doi.org/10.1016/j.quaint.2016.02.012, 2016.
Heinrich, H.: Origin and Consequences of Cyclic Ice Rafting in the Northeast
Atlantic Ocean during the Past 130,000 years, Quaternary Res., 29,
142–152, 1988.
Henry, L. G., McManus, J. F., Curry, W. B., Roberts, N. L., Piotrowski, A.
M., and Keigwin, L. D.: North Atlantic ocean circulation and abrupt climate
change during the last glaciation, Science, 353, 470–474,
https://doi.org/10.1126/science.aaf5529, 2016.
Hodell, D. A. and Channell, J. E. T.: Mode transitions in Northern Hemisphere glaciation: co-evolution of millennial and orbital variability in Quaternary climate, Clim. Past, 12, 1805–1828, https://doi.org/10.5194/cp-12-1805-2016, 2016.
Hodell, D. A., Channell, J. E. T., Curtis, J. H., Romero, O. E., and Roehl,
U.: Onset of “Hudson Strait” Heinrich events in the eastern North Atlantic
at the end of the middle Pleistocene transition (similar to 640 ka)?,
Paleoceanography, 23, PA4218, https://doi.org/10.1029/2008pa001591, 2008.
Jordanova, D. and Petersen, N.: Palaeoclimatic record from a loess-soil
profile in northeastern Bulgaria – I. Rock magnetic properties, Geophys.
J. Int., 138, 520–532, https://doi.org/10.1046/j.1365-246X.1999.00874.x, 1999.
Jordanova, D., Hus, J., Evlogiev, J., and Geeraerts, R.: Palaeomagnetism of
the loess/palaeosol sequence in Viatovo (NE Bulgaria) in the Danube basin,
Phys. Earth Planet. In., 167, 71–83, https://doi.org/10.1016/j.pepi.2008.02.008, 2008.
Juvigne, E., Haesaerts, P., Mestdagh, H., Pissart, A., and Balescu, S.:
Revision of the loess stratotype of Kesselt (Limbourg, Belgium), C.R. Acad. Sci. II A, 323, 801–807, 1996.
Kandiano, E. S.: (Table A.01) Planktic foraminiferal census data of sediment core GIK23414-9, PANGAEA, https://doi.org/10.1594/PANGAEA.713761, 2009.
Kandiano, E. S., Bauch, H. A., and Muller, A.: Sea surface temperature
variability in the North Atlantic during the last two glacial-interglacial
cycles: comparison of faunal, oxygen isotopic, and Mg/Ca-derived records,
Palaeogeogr. Palaeocl., 204, 145–164, https://doi.org/10.1016/s0031-0182(03)00728-4, 2004.
Kindler, P., Guillevic, M., Baumgartner, M., Schwander, J., Landais, A., and Leuenberger, M.: Temperature reconstruction from 10 to 120 kyr b2k from the NGRIP ice core, Clim. Past, 10, 887–902, https://doi.org/10.5194/cp-10-887-2014, 2013.
Kukla, G.: Pleistocene land-sea correlations. 1. Europe, Earth-Sci. Rev., 13, 307–374, 1977.
Lagroix, F., Melot, L., Habel, T., Taylor, S. N., Till, J. L., Jordanova,
D., Jordanova, N., Petrov, P., Rousseau, D. D., Antoine, P., Moine, O.,
Lomax, J., Fuchs, M., Debret, M., and Hatté, C.: Environmental magnetism
of the Harletz (NW Bulgaria) loess sequence, AGU Fall Meeting abstracts,
GP51C-1400, 2016.
Leicher, N., Zanchetta, G., Sulpizio, R., Giaccio, B., Wagner, B., Nomade, S., Francke, A., and Del Carlo, P.: First tephrostratigraphic results of the DEEP site record from Lake Ohrid (Macedonia and Albania), Biogeosciences, 13, 2151–2178, https://doi.org/10.5194/bg-13-2151-2016, 2016.
Lisiecki, L. E. and Raymo, M. E.: A Pliocene-Pleistocene stack of 57
globally distributed benthic δ18O records, Paleoceanography, 20, PA1003, https://doi.org/10.1029/2004PA001071, 2005.
Locht, J.-L., Herisson, D., Goval, E., Cliquet, D., Huet, B., Coutard, S.,
Antoine, P., and Feray, P.: Timescales, space and culture during the Middle
Palaeolithic in northwestern France, Quatern. Int., 411, 129–148,
https://doi.org/10.1016/j.quaint.2015.07.053, 2016.
Lomax, J., Fuchs, M., Antoine, P., Rousseau, D. D., Lagroix, F., Hatté,
C., Taylor, S. N., Till, J. L., Debret, M., Moine, O., and Jordanova, D.: A
luminescence-based chronology for the Harletz loess sequence, Bulgaria,
Boreas, 48, 179–194, https://doi.org/10.1111/bor.12348, 2019.
Margari, V., Skinner, L. C., Hodell, D. A., Martrat, B., Toucanne, S.,
Grimalt, J. O., Gibbard, P. L., Lunkka, J. P., and Tzedakis, P. C.:
Land-ocean changes on orbital and millennial time scales and the penultimate
glaciation, Geology, 42, 183–186, https://doi.org/10.1130/g35070.1, 2014.
Markovic, S. B., Hambach, U., Catto, N., Jovanovic, M., Buggle, B.,
Machalett, B., Zoeller, L., Glaser, B., and Frechen, M.: Middle and Late
Pleistocene loess sequences at Batajnica, Vojvodina, Serbia, Quatern.
Int., 198, 255–266, https://doi.org/10.1016/j.quaint.2008.12.004, 2009.
Markovic, S. B., Stevens, T., Kukla, G. J., Hambach, U., Fitzsimmons, K. E.,
Gibbard, P., Buggle, B., Zech, M., Guo, Z. T., Hao, Q. Z., Wu, H. B., Dhand,
K. O., Smalley, I. J., Ujvari, G., Sumegi, P., Timar-Gabor, A., Veres, D.,
Sirocko, F., Vasiljevic, D. A., Jary, Z., Svensson, A., Jovic, V., Lehmkuhl,
F., Kovacs, J., and Svircev, Z.: Danube loess stratigraphy – Towards a
pan-European loess stratigraphic model, Earth-Sci. Rev., 148, 228–258,
https://doi.org/10.1016/j.earscirev.2015.06.005, 2015.
Martrat, B., Grimalt, J. O., Lopez-Martinez, C., Cacho, I., Sierro, F. J.,
Flores, J. A., Zahn, R., Canals, M., Curtis, J. H., and Hodell, D. A.:
Abrupt temperature changes in the Western Mediterranean over the past
250,000 years, Science, 306, 1762–1765, https://doi.org/10.1126/science.1101706, 2004a.
Martrat, B., Grimalt, J. O., López-Martinez, C., Cacho, I., Sierro, F. J., Flores, J. A., Zahn, R., Canals, M., Curtis, J. H., and Hodell, D. A.: Sea surface temperatures, alkenones and sedimentation rate from ODP Hole 161-977A, PANGAEA, https://doi.org/10.1594/PANGAEA.787811, 2004b.
Martrat, B., Grimalt, J. O., Shackleton, N. J., de Abreu, L., Hutterli, M.
A., and Stocker, T. F.: Four climate cycles of recurring deep and surface
water destabilizations on the Iberian margin, Science, 317, 502–507,
https://doi.org/10.1126/science.1139994, 2007a.
Martrat, B., Grimalt, J. O., Shackleton, N. J., de Abreu, L., Hutterli, M.
A., and Stocker, T. F.: Sea surface temperature estimation for the Iberian Margin, PANGAEA, https://doi.org/10.1594/PANGAEA.771894, 2007b.
McManus, J. F., Bond, G. C., Broecker, W. S., Johnsen, S., Labeyrie, L., and
Higgins, S.: High-resolution climate records from the North Atlantic during
the last interglacial, Nature, 371, 326–329, 1994.
McManus, J. F., Oppo, D. W., and Cullen, J. L.: A 0,5-million-year record of
millennial-scale climate variability in the North Atlantic, Science, 283,
971–975, 1999.
Mélières, M. A., Rossignol-Strick, M., and Malaize B.: Relation
between low latitude insolation and δ18O change of atmospheric oxygen for the last 200 kyrs, as revealed by Mediterranean sapropels, Geophys. Res. Lett., 24, 1235–1238, 1997.
Moine, O., Antoine, P., Hatté, C., Landais, A., Mathieu, J., Prud'homme,
C., and Rousseau, D.-D.: The impact of Last Glacial climate variability in
west-European loess revealed by radiocarbon dating of fossil earthworm
granules, P. Natl. Acad. Sci. USA, 114, 6209–6214, https://doi.org/10.1073/pnas.1614751114, 2017.
Mokeddem, Z. and McManus, J. F.: Persistent climatic and oceanographic
oscillations in the subpolar North Atlantic during the MIS 6 glaciation and
MIS 5 interglacial, Paleoceanography, 31, 758–778, https://doi.org/10.1002/2015pa002813, 2016.
Murray, A. S., Schmidt, E. D., Stevens, T., Buylaert, J. P., Markovic, S.
B., Tsukamoto, S., and Frechen, M.: Dating Middle Pleistocene loess from
Stari Slankamen (Vojvodina, Serbia) – Limitations imposed by the saturation
behaviour of an elevated temperature IRSL signal, Catena, 117, 34–42,
https://doi.org/10.1016/j.catena.2013.06.029, 2014.
Novothny, A., Frechen, M., Horvath, E., Krbetschek, M., and Tsukamoto, S.:
Infrared stimulated luminescence and radiofluorescence dating of aeolian
sediments from Hungary, Quat. Geochronol., 5, 114–119,
https://doi.org/10.1016/j.quageo.2009.05.002, 2010.
Novothny, A., Frechen, M., Horvath, E., Wacha, L., and Rolf, C.:
Investigating the penultimate and last glacial cycles of the Sutto loess
section (Hungary) using luminescence dating, high-resolution grain size, and
magnetic susceptibility data, Quatern. Int., 234, 75–85,
https://doi.org/10.1016/j.quaint.2010.08.002, 2011.
Obreht, I., Zeeden, C., Hambach, U., Veres, D., Markovic, S. B., Boesken,
J., Svircev, Z., Bacevic, N., Gavrilov, M. B., and Lehmkuhl, F.: Tracing the
influence of Mediterranean climate on Southeastern Europe during the past
350,000 years, Scientific Reports, 6, 36334, https://doi.org/10.1038/srep36334, 2016.
Obrochta, S. P., Crowley, T. J., Channell, J. E. T., Hodell, D. A., Baker,
P. A., Seki, A., and Yokoyama, Y.: Climate variability and ice-sheet
dynamics during the last three glaciations, Earth Planet. Sc.
Lett., 406, 198–212, https://doi.org/10.1016/j.epsl.2014.09.004, 2014a.
Obrochta, S. P., Crowley, T. J., Channell, J. E. T., Hodell, D. A., Baker,
P. A., Seki, A., and Yokoyama, Y.: Coarse grain counts in MIS6 of IODP Site 303-U1308, PANGAEA, https://doi.org/10.1594/PANGAEA.834636, 2014b.
Panaiotu, C. G., Panaiotu, E. C., Grama, A., and Necula, C.: Paleoclimatic
record from a loess-paleosol profile in southeastern Romania, Phys. Chem. Earth Pt. A, 26, 893–898, https://doi.org/10.1016/s1464-1895(01)00138-7, 2001.
Petersen, S. V., Schrag, D. P., and Clark, P. U.: A new mechanism for
Dansgaard-Oeschger cycles, Paleoceanography, 28, 24–30, https://doi.org/10.1029/2012pa002364, 2013.
Pirson, S., Baele, J.-M., Balescu, S., Haesaerts, P., Juvigne, E., Meijs,
E., and Spagna, P.: Green amphibole distribution as a stratigraphic tool in
loess sequences from Belgium: A review, Quatern. Int., 485, 183–198, https://doi.org/10.1016/j.quaint.2017.06.026, 2018.
Pisias, N. G., Clark, P. U., and Brook, E. J.: Modes of Global Climate
Variability during Marine Isotope Stage 3 (60–26 ka), J. Climate,
23, 1581–1588, https://doi.org/10.1175/2009jcli3416.1, 2010.
Roucoux, K. H., Tzedakis, P. C., Lawson, I. T., and Margari, V.: Vegetation
history of the penultimate glacial period (Marine Isotope Stage 6) at
Ioannina, north-west Greece, J. Quaternary Sci., 26, 616–626,
https://doi.org/10.1002/jqs.1483, 2011.
Rousseau, D. D., Antoine, P., Hatté, C., Lang, A., Zöller, L.,
Fontugne, M., Ben Othman, D., Luck, J. M., Moine, O., Labonne, M., Bentaleb,
I., and Jolly, D.: Abrupt millennial climatic changes from Nussloch
(Germany) Upper Weichselian eolian records during the Last Glaciation,
Quaternary Sci. Rev., 21, 1577–1582, 2002.
Rousseau, D. D., Sima, A., Antoine, P., Hatté, C., Lang, A., and
Zöller, L.: Link between European and North Atlantic abrupt climate
changes over the last glaciation, Geophys. Res. Lett., 34, L22713,
https://doi.org/10.1029/2007gl031716, 2007.
Rousseau, D.-D., Antoine, P., Gerasimenko, N., Sima, A., Fuchs, M., Hatté, C., Moine, O., and Zoeller, L.: North Atlantic abrupt climatic events of the last glacial period recorded in Ukrainian loess deposits, Clim. Past, 7, 221–234, https://doi.org/10.5194/cp-7-221-2011, 2011.
Rousseau, D. D., Boers, N., Sima, A., Svensson, A., Bigler, M., Lagroix, F.,
Taylor, S., and Antoine, P.: (MIS3 & 2) millennial oscillations in
Greenland dust and Eurasian aeolian records – A paleosol perspective,
Quaternary Sci. Rev., 169, 99–113, https://doi.org/10.1016/j.quascirev.2017.05.020,
2017a.
Rousseau, D.-D., Svensson, A., Bigler, M., Sima, A., Steffensen, J. P., and Boers, N.: Eurasian contribution to the last glacial dust cycle: how are loess sequences built?, Clim. Past, 13, 1181–1197, https://doi.org/10.5194/cp-13-1181-2017, 2017b.
Sadori, L., Koutsodendris, A., Panagiotopoulos, K., Masi, A., Bertini, A., Combourieu-Nebout, N., Francke, A., Kouli, K., Joannin, S., Mercuri, A. M., Peyron, O., Torri, P., Wagner, B., Zanchetta, G., Sinopoli, G., and Donders, T. H.: Pollen-based paleoenvironmental and paleoclimatic change at Lake Ohrid (south-eastern Europe) during the past 500 ka, Biogeosciences, 13, 1423–1437, https://doi.org/10.5194/bg-13-1423-2016, 2016.
Sadori, L., Koutsodendris, A., Panagiotopoulos, K., Masi, A., Bertini, A.,
Combourieu-Nebout, N., Francke, A., Kouli, K., Kousis, I., Joannin, S., Mercuri, A. M., Peyron, O., Torri, P., Wagner, B., Zanchetta, G., Sinopoli, G., and Donders, T. H.: Pollen data of the last 500 ka BP at Lake Ohrid (south-eastern Europe), PANGAEA, https://doi.org/10.1594/PANGAEA.892362, 2018.
Schirmer, W.: Interglacial complex and solcomplex, Cent. Eur. J. Geosci., 2, 32–40, https://doi.org/10.2478/v10085-009-0038-z, 2010.
Schupbach, S., Fischer, H., Bigler, M., Erhardt, T., Gfeller, G.,
Leuenberger, D., Mini, O., Mulvaney, R., Abram, N. J., Fleet, L., Frey, M.
M., Thomas, E., Svensson, A., Dahl-Jensen, D., Kettner, E., Kjaer, H.,
Seierstad, I., Steffensen, J. P., Rasmussen, S. O., Vallelonga, P.,
Winstrup, M., Wegner, A., Twarloh, B., Wolff, K., Schmidt, K., Goto-Azuma,
K., Kuramoto, T., Hirabayashi, M., Uetake, J., Zheng, J., Bourgeois, J.,
Fisher, D., Zhiheng, D., Xiao, C., Legrand, M., Spolaor, A., Gabrieli, J.,
Barbante, C., Kang, J. H., Hur, S. D., Hong, S. B., Hwang, H. J., Hong, S.,
Hansson, M., Iizuka, Y., Oyabu, I., Muscheler, R., Adolphi, F., Maselli, O.,
McConnell, J., and Wolff, E. W.: Greenland records of aerosol source and
atmospheric lifetime changes from the Eemian to the Holocene, Nat. Commun., 9, 1476, https://doi.org/10.1038/s41467-018-03924-3, 2018.
Shackleton, N. J., Hall, M. A., and Vincent, E.: Phase relationships between
millenial-scale events 64,000–24,000 years ago, Paleoceanography, 15,
565–569, 2000.
Sun, Y., Clemens, S. C., Morrill, C., Lin, X., Wang, X., and An, Z.:
Influence of Atlantic meridional overturning circulation on the East Asian
winter monsoon, Nat. Geosci., 5, 46–49, 2012.
Timar-Gabor, A., Vandenberghe, D. A. G., Vasiliniuc, S., Panaoitu, C. E.,
Panaiotu, C. G., Dimofte, D., and Cosma, C.: Optical dating of Romanian
loess: A comparison between silt-sized and sand-sized quartz, Quatern. Int., 240, 62–70, https://doi.org/10.1016/j.quaint.2010.10.007, 2011.
Tzedakis, P. C., Hooghiemstra, H., and Palike, H.: The last 1.35 million
years at Tenaghi Philippon: revised chronostratigraphy and long-term
vegetation trends, Quaternary Sci. Rev., 25, 3416–3430,
https://doi.org/10.1016/j.quascirev.2006.09.002, 2006.
Ujvari, G., Molnar, M., Novothny, A., Pall-Gergely, B., Kovacs, J., and
Varhegyi, A.: AMS C-14 and OSL/IRSL dating of the Dunaszekcso loess sequence
(Hungary): chronology for 20 to 150 ka and implications for establishing
reliable age-depth models for the last 40 ka, Quaternary Sci. Rev.,
106, 140–154, https://doi.org/10.1016/j.quascirev.2014.06.009, 2014.
Vandenberghe, J., Markovic, S. B., Jovanovic, M., and Harnbach, U.:
Site-specific variability of loess and palaeosols (Ruma, Vojvodina, northern
Serbia), Quatern. Int., 334, 86–93, https://doi.org/10.1016/j.quaint.2013.10.036,
2014.
Vasiliniuc, S., Vandenberghe, D. A. G., Timar-Gabor, A., Panaiotu, C.,
Cosma, C., and van den Haute, P.: Testing the potential of elevated
temperature post-IR IRSL signals for dating Romanian loess, Quat.
Geochronol., 10, 75–80, https://doi.org/10.1016/j.quageo.2012.02.014, 2012.
Wang, Y., Cheng, H., Edwards, R. L., Kong, X., Shao, X., Chen, S., Wu, J.,
Jiang, X., Wang, X., and An, Z.: Millenial- and orbital-scale changes in the
East Asian monsoon over the past 224,000 years, Science, 451, 1090–1093,
2008.
Wang, Y., Cheng, H., Edwards, R. L., Kong, X., Shao, X., Chen, S., Wu, J., Jiang, X., Wang, X., and An, Z.: Sanbao Cave, China 224 KYr Stalagmite ™ 18Ο Data, IGBP PAGES/World Data Center for Paleoclimatology, Data Contribution Series # 2009-138, NOAA/NCDC Paleoclimatology Program, Boulder CO, USA, available at: https://www.ncdc.noaa.gov/paleo-search/study/8641 (last access: 8 December 2018), 2009.
Wang, Y. J., Cheng, H., Edwards, R. L., An, Z. S., Wu, J. Y., Shen, C. C.,
and Dorale, J. A.: A high-resolution absolute-dated late Pleistocene monsoon
record from Hulu Cave, China, Science, 294, 2345–2348, 2001.
Yang, S. and Ding, Z.: A 249 kyr stack of eight loess grain size records
from northern China documenting millennial-scale climate variability,
Geochem. Geophy. Geosy., 15, 798–814, https://doi.org/10.1002/2013gc005113, 2014.
Short summary
New investigations of European loess records from MIS 6 reveal the occurrence of paleosols and horizon showing slight pedogenesis similar to those from the last climatic cycle. These units are correlated with interstadials described in various marine, continental, and ice Northern Hemisphere records. Therefore, these MIS 6 interstadials can confidently be interpreted as DO-like events of the penultimate climate cycle.
New investigations of European loess records from MIS 6 reveal the occurrence of paleosols and...
