Articles | Volume 16, issue 4
https://doi.org/10.5194/cp-16-1347-2020
© 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-16-1347-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
28 Jul 2020
Research article |
| 28 Jul 2020
| 28 Jul 2020
Climate impacts on vegetation and fire dynamics since the last deglaciation at Moossee (Switzerland)
Institute of Plant Sciences, University of Bern, 3013 Bern,
Switzerland
Oeschger Centre for Climate Change Research, University of Bern,
3012 Bern, Switzerland
Geoecology, Department of Environmental Sciences, University of Basel, 4056 Basel, Switzerland
Erika Gobet
Institute of Plant Sciences, University of Bern, 3013 Bern,
Switzerland
Oeschger Centre for Climate Change Research, University of Bern,
3012 Bern, Switzerland
Christoph Schwörer
Institute of Plant Sciences, University of Bern, 3013 Bern,
Switzerland
Oeschger Centre for Climate Change Research, University of Bern,
3012 Bern, Switzerland
Albert Hafner
Oeschger Centre for Climate Change Research, University of Bern,
3012 Bern, Switzerland
Institute of Archaeological Sciences, University of Bern, 3012
Bern, Switzerland
Sönke Szidat
Oeschger Centre for Climate Change Research, University of Bern,
3012 Bern, Switzerland
Department of Chemistry and Biochemistry, University of Bern, 3012
Bern, Switzerland
Willy Tinner
Institute of Plant Sciences, University of Bern, 3013 Bern,
Switzerland
Oeschger Centre for Climate Change Research, University of Bern,
3012 Bern, Switzerland
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EGUsphere, https://doi.org/10.5194/egusphere-2024-3775, https://doi.org/10.5194/egusphere-2024-3775, 2024
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We explored CO2 from soil to subsurface at Milandre cave, finding very high concentrations at all depths. While forest soils produced modern CO2 year-round, cave and meadow soil CO2 influences varies with temperature controlled cave ventilation, with older CO2 input in winter from old organic matter stored underground. These findings show that CO2 fluxes in karst systems are highly dynamic, and a better understanding of them is important for accurate carbon cycle modelling.
Giulia Zazzeri, Lukas Wacker, Negar Haghipour, Philip Gautchi, Thomas Laemmel, Sönke Szidat, and Heather Graven
Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2024-123, https://doi.org/10.5194/amt-2024-123, 2024
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Radiocarbon (14C) is an optimal tracer of methane (CH4) emissions, as 14C measurements enable distinguishing fossil from biogenic methane. However, these measurements are particularly challenging, mainly due to technical difficulties in the sampling procedure. With this work we made the sample extraction much simpler and time efficient, providing a new technology that can be used by any research group, with the goal of expanding 14C measurements for an improved understanding of methane sources.
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EGUsphere, https://doi.org/10.5194/egusphere-2024-2098, https://doi.org/10.5194/egusphere-2024-2098, 2024
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Reports on the molecular level knowledge of high temporal resolution PM2.5 components on hazy days are still limited. This study investigated many individual PM2.5 species and sources. The results show biomass burning (BB) was the main source of organic carbon. Moreover, BB enhanced fungal spore emissions and secondary aerosol formation. The contribution of non-fossils increased with increasing haze pollution. These findings suggest BB may be an important driver of haze events in winter.
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Biogeosciences, 21, 1629–1638, https://doi.org/10.5194/bg-21-1629-2024, https://doi.org/10.5194/bg-21-1629-2024, 2024
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Rate-of-change records based on compositional data are ambiguous as they may rise irrespective of the underlying trajectory of ecosystems. We emphasize the importance of characterizing both the direction and the rate of palaeoecological changes in terms of key features of ecosystems rather than solely on community composition. Past accelerations of community transformation may document the potential of ecosystems to rapidly recover important ecological attributes and functions.
Karl Espen Yttri, Are Bäcklund, Franz Conen, Sabine Eckhardt, Nikolaos Evangeliou, Markus Fiebig, Anne Kasper-Giebl, Avram Gold, Hans Gundersen, Cathrine Lund Myhre, Stephen Matthew Platt, David Simpson, Jason D. Surratt, Sönke Szidat, Martin Rauber, Kjetil Tørseth, Martin Album Ytre-Eide, Zhenfa Zhang, and Wenche Aas
Atmos. Chem. Phys., 24, 2731–2758, https://doi.org/10.5194/acp-24-2731-2024, https://doi.org/10.5194/acp-24-2731-2024, 2024
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We discuss carbonaceous aerosol (CA) observed at the high Arctic Zeppelin Observatory (2017 to 2020). We find that organic aerosol is a significant fraction of the Arctic aerosol, though less than sea salt aerosol and mineral dust, as well as non-sea-salt sulfate, originating mainly from anthropogenic sources in winter and from natural sources in summer, emphasizing the importance of wildfires for biogenic secondary organic aerosol and primary biological aerosol particles observed in the Arctic.
Sudip Acharya, Maximilian Prochnow, Thomas Kasper, Linda Langhans, Peter Frenzel, Paul Strobel, Marcel Bliedtner, Gerhard Daut, Christopher Berndt, Sönke Szidat, Gary Salazar, Antje Schwalb, and Roland Zech
E&G Quaternary Sci. J., 72, 219–234, https://doi.org/10.5194/egqsj-72-219-2023, https://doi.org/10.5194/egqsj-72-219-2023, 2023
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This study presents a palaeoenvironmental record from Lake Höglwörth, Bavaria, Germany. Before 870 CE peat deposits existed. Erosion increased from 1240 to 1380 CE, followed by aquatic productivity and anoxia from 1310 to 1470 CE. Increased allochthonous input and a substantial shift in the aquatic community in 1701 were caused by construction of a mill. Recent anoxia has been observed since the 1960s.
Martin Rauber, Gary Salazar, Karl Espen Yttri, and Sönke Szidat
Atmos. Meas. Tech., 16, 825–844, https://doi.org/10.5194/amt-16-825-2023, https://doi.org/10.5194/amt-16-825-2023, 2023
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Carbon-containing aerosols from ambient air are analysed for radioactive isotope radiocarbon to determine the contribution from fossil-fuel emissions. Light-absorbing soot-like aerosols are isolated by water extraction and thermal separation. This separation is affected by artefacts, for which we developed a new correction method. The investigation of aerosols from the Arctic shows that our approach works well for such samples, where many artefacts are expected.
Vaios Moschos, Martin Gysel-Beer, Robin L. Modini, Joel C. Corbin, Dario Massabò, Camilla Costa, Silvia G. Danelli, Athanasia Vlachou, Kaspar R. Daellenbach, Sönke Szidat, Paolo Prati, André S. H. Prévôt, Urs Baltensperger, and Imad El Haddad
Atmos. Chem. Phys., 21, 12809–12833, https://doi.org/10.5194/acp-21-12809-2021, https://doi.org/10.5194/acp-21-12809-2021, 2021
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This study provides a holistic approach to studying the spectrally resolved light absorption by atmospheric brown carbon (BrC) and black carbon using long time series of daily samples from filter-based measurements. The obtained results provide (1) a better understanding of the aerosol absorption profile and its dependence on BrC and on lensing from less absorbing coatings and (2) an estimation of the most important absorbers at typical European locations.
Paul Strobel, Marcel Bliedtner, Andrew S. Carr, Peter Frenzel, Björn Klaes, Gary Salazar, Julian Struck, Sönke Szidat, Roland Zech, and Torsten Haberzettl
Clim. Past, 17, 1567–1586, https://doi.org/10.5194/cp-17-1567-2021, https://doi.org/10.5194/cp-17-1567-2021, 2021
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This study presents a multi-proxy record from Lake Voёlvlei and provides new insights into the sea level and paleoclimate history of the past 8.5 ka at South Africa’s southern Cape coast. Our results show that sea level changes at the southern coast are in good agreement with the western coast of South Africa. In terms of climate our record provides valuable insights into changing sources of precipitation at the southern Cape coast, i.e. westerly- and easterly-derived precipitation contribution.
Michael Zech, Marcel Lerch, Marcel Bliedtner, Tobias Bromm, Fabian Seemann, Sönke Szidat, Gary Salazar, Roland Zech, Bruno Glaser, Jean Nicolas Haas, Dieter Schäfer, and Clemens Geitner
E&G Quaternary Sci. J., 70, 171–186, https://doi.org/10.5194/egqsj-70-171-2021, https://doi.org/10.5194/egqsj-70-171-2021, 2021
Siqi Hou, Di Liu, Jingsha Xu, Tuan V. Vu, Xuefang Wu, Deepchandra Srivastava, Pingqing Fu, Linjie Li, Yele Sun, Athanasia Vlachou, Vaios Moschos, Gary Salazar, Sönke Szidat, André S. H. Prévôt, Roy M. Harrison, and Zongbo Shi
Atmos. Chem. Phys., 21, 8273–8292, https://doi.org/10.5194/acp-21-8273-2021, https://doi.org/10.5194/acp-21-8273-2021, 2021
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This study provides a newly developed method which combines radiocarbon (14C) with organic tracers to enable source apportionment of primary and secondary fossil vs. non-fossil sources of carbonaceous aerosols at an urban and a rural site of Beijing. The source apportionment results were compared with those by chemical mass balance and AMS/ACSM-PMF methods. Correlations of WINSOC and WSOC with different sources of OC were also performed to elucidate the formation mechanisms of SOC.
Dimitri Osmont, Sandra Brugger, Anina Gilgen, Helga Weber, Michael Sigl, Robin L. Modini, Christoph Schwörer, Willy Tinner, Stefan Wunderle, and Margit Schwikowski
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Basil A. S. Davis, Manuel Chevalier, Philipp Sommer, Vachel A. Carter, Walter Finsinger, Achille Mauri, Leanne N. Phelps, Marco Zanon, Roman Abegglen, Christine M. Åkesson, Francisca Alba-Sánchez, R. Scott Anderson, Tatiana G. Antipina, Juliana R. Atanassova, Ruth Beer, Nina I. Belyanina, Tatiana A. Blyakharchuk, Olga K. Borisova, Elissaveta Bozilova, Galina Bukreeva, M. Jane Bunting, Eleonora Clò, Daniele Colombaroli, Nathalie Combourieu-Nebout, Stéphanie Desprat, Federico Di Rita, Morteza Djamali, Kevin J. Edwards, Patricia L. Fall, Angelica Feurdean, William Fletcher, Assunta Florenzano, Giulia Furlanetto, Emna Gaceur, Arsenii T. Galimov, Mariusz Gałka, Iria García-Moreiras, Thomas Giesecke, Roxana Grindean, Maria A. Guido, Irina G. Gvozdeva, Ulrike Herzschuh, Kari L. Hjelle, Sergey Ivanov, Susanne Jahns, Vlasta Jankovska, Gonzalo Jiménez-Moreno, Monika Karpińska-Kołaczek, Ikuko Kitaba, Piotr Kołaczek, Elena G. Lapteva, Małgorzata Latałowa, Vincent Lebreton, Suzanne Leroy, Michelle Leydet, Darya A. Lopatina, José Antonio López-Sáez, André F. Lotter, Donatella Magri, Elena Marinova, Isabelle Matthias, Anastasia Mavridou, Anna Maria Mercuri, Jose Manuel Mesa-Fernández, Yuri A. Mikishin, Krystyna Milecka, Carlo Montanari, César Morales-Molino, Almut Mrotzek, Castor Muñoz Sobrino, Olga D. Naidina, Takeshi Nakagawa, Anne Birgitte Nielsen, Elena Y. Novenko, Sampson Panajiotidis, Nata K. Panova, Maria Papadopoulou, Heather S. Pardoe, Anna Pędziszewska, Tatiana I. Petrenko, María J. Ramos-Román, Cesare Ravazzi, Manfred Rösch, Natalia Ryabogina, Silvia Sabariego Ruiz, J. Sakari Salonen, Tatyana V. Sapelko, James E. Schofield, Heikki Seppä, Lyudmila Shumilovskikh, Normunds Stivrins, Philipp Stojakowits, Helena Svobodova Svitavska, Joanna Święta-Musznicka, Ioan Tantau, Willy Tinner, Kazimierz Tobolski, Spassimir Tonkov, Margarita Tsakiridou, Verushka Valsecchi, Oksana G. Zanina, and Marcelina Zimny
Earth Syst. Sci. Data, 12, 2423–2445, https://doi.org/10.5194/essd-12-2423-2020, https://doi.org/10.5194/essd-12-2423-2020, 2020
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The Eurasian Modern Pollen Database (EMPD) contains pollen counts and associated metadata for 8134 modern pollen samples from across the Eurasian region. The EMPD is part of, and complementary to, the European Pollen Database (EPD) which contains data on fossil pollen found in Late Quaternary sedimentary archives. The purpose of the EMPD is to provide calibration datasets and other data to support palaeoecological research on past climates and vegetation cover over the Quaternary period.
Luyao Tu, Paul Zander, Sönke Szidat, Ronald Lloren, and Martin Grosjean
Biogeosciences, 17, 2715–2729, https://doi.org/10.5194/bg-17-2715-2020, https://doi.org/10.5194/bg-17-2715-2020, 2020
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In a small, deep lake on the Swiss Plateau, net fluxes of labile P fractions in sediments that can be released to surface waters have been predominately controlled by past hypolimnetic anoxic conditions since the early 1900s. More than 40 years of hypolimnetic withdrawal can effectively reduce net P fluxes in sediments and internal P loads but not effectively decrease eutrophication. These findings should likely serve the management of deep eutrophic lakes in temperate zones.
Marcel Bliedtner, Hans von Suchodoletz, Imke Schäfer, Caroline Welte, Gary Salazar, Sönke Szidat, Mischa Haas, Nathalie Dubois, and Roland Zech
Hydrol. Earth Syst. Sci., 24, 2105–2120, https://doi.org/10.5194/hess-24-2105-2020, https://doi.org/10.5194/hess-24-2105-2020, 2020
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This study investigates the age and origin of leaf wax n-alkanes from a fluvial sediment–paleosol sequence (FSPS) by compound-class 14C dating. Our results show varying age offsets between the formation and sedimentation of leaf wax n-alkanes from well-developed (paleo)soils and fluvial sediments that are mostly due to their complex origin in such sequences. Thus, dating the leaf wax n-alkanes is an important step for more robust leaf-wax-based paleoenvironmental reconstructions in FSPSs.
Paul D. Zander, Sönke Szidat, Darrell S. Kaufman, Maurycy Żarczyński, Anna I. Poraj-Górska, Petra Boltshauser-Kaltenrieder, and Martin Grosjean
Geochronology, 2, 63–79, https://doi.org/10.5194/gchron-2-63-2020, https://doi.org/10.5194/gchron-2-63-2020, 2020
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Recent technological advances allow researchers to obtain radiocarbon ages from smaller samples than previously possible. We investigate the reliability and precision of radiocarbon ages obtained from miniature (11–150 μg C) samples of terrestrial plant fragments taken from sediment cores from Lake Żabińskie, Poland. We further investigate how sampling density (the number of ages per 1000 years) and sample mass (which is related to age precision) influence the performance of age–depth models.
Karl Espen Yttri, David Simpson, Robert Bergström, Gyula Kiss, Sönke Szidat, Darius Ceburnis, Sabine Eckhardt, Christoph Hueglin, Jacob Klenø Nøjgaard, Cinzia Perrino, Ignazio Pisso, Andre Stephan Henry Prevot, Jean-Philippe Putaud, Gerald Spindler, Milan Vana, Yan-Lin Zhang, and Wenche Aas
Atmos. Chem. Phys., 19, 4211–4233, https://doi.org/10.5194/acp-19-4211-2019, https://doi.org/10.5194/acp-19-4211-2019, 2019
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Carbonaceous aerosols from natural sources were abundant regardless of season. Residential wood burning (RWB) emissions were occasionally equally as large as or larger than of fossil-fuel sources, depending on season and region. RWB emissions are poorly constrained; thus emissions inventories need improvement. Harmonizing emission factors between countries is likely the most important step to improve model calculations for biomass burning emissions and European PM2.5 concentrations in general.
Anina Gilgen, Carole Adolf, Sandra O. Brugger, Luisa Ickes, Margit Schwikowski, Jacqueline F. N. van Leeuwen, Willy Tinner, and Ulrike Lohmann
Atmos. Chem. Phys., 18, 11813–11829, https://doi.org/10.5194/acp-18-11813-2018, https://doi.org/10.5194/acp-18-11813-2018, 2018
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Microscopic charcoal particles are fire-specific tracers, which are presently the primary source for reconstructing past fire activity. In this study, we implement microscopic charcoal particles into a global aerosol–climate model to better understand the transport of charcoal on a large scale. We find that the model captures a significant portion of the spatial variability but fails to reproduce the extreme variability observed in the charcoal data.
Arineh Cholakian, Matthias Beekmann, Augustin Colette, Isabelle Coll, Guillaume Siour, Jean Sciare, Nicolas Marchand, Florian Couvidat, Jorge Pey, Valerie Gros, Stéphane Sauvage, Vincent Michoud, Karine Sellegri, Aurélie Colomb, Karine Sartelet, Helen Langley DeWitt, Miriam Elser, André S. H. Prévot, Sonke Szidat, and François Dulac
Atmos. Chem. Phys., 18, 7287–7312, https://doi.org/10.5194/acp-18-7287-2018, https://doi.org/10.5194/acp-18-7287-2018, 2018
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In this work, four schemes for the simulation of organic aerosols in the western Mediterranean basin are added to the CHIMERE chemistry–transport model; the resulting simulations are then compared to measurements obtained from ChArMEx. It is concluded that the scheme taking into account the fragmentation and the formation of nonvolatile organic aerosols corresponds better to measurements; the major source of this aerosol in the western Mediterranean is found to be of biogenic origin.
Athanasia Vlachou, Kaspar R. Daellenbach, Carlo Bozzetti, Benjamin Chazeau, Gary A. Salazar, Soenke Szidat, Jean-Luc Jaffrezo, Christoph Hueglin, Urs Baltensperger, Imad El Haddad, and André S. H. Prévôt
Atmos. Chem. Phys., 18, 6187–6206, https://doi.org/10.5194/acp-18-6187-2018, https://doi.org/10.5194/acp-18-6187-2018, 2018
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Carbonaceous aerosols are related to adverse human health effects, which depend on the aerosol chemical composition and size. Here, we combine aerosol mass spectrometry and radiocarbon measurements of size-resolved samples collected over a long term to identify the origins of primary and secondary carbonaceous aerosols in the fine and coarse modes.
Di Liu, Matthias Vonwiller, Jun Li, Junwen Liu, Sönke Szidat, Yanlin Zhang, Chongguo Tian, Yinjun Chen, Zhineng Cheng, Guangcai Zhong, Pingqing Fu, and Gan Zhang
Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2018-295, https://doi.org/10.5194/acp-2018-295, 2018
Revised manuscript not accepted
Yan-Lin Zhang, Imad El-Haddad, Ru-Jin Huang, Kin-Fai Ho, Jun-Ji Cao, Yongming Han, Peter Zotter, Carlo Bozzetti, Kaspar R. Daellenbach, Jay G. Slowik, Gary Salazar, André S. H. Prévôt, and Sönke Szidat
Atmos. Chem. Phys., 18, 4005–4017, https://doi.org/10.5194/acp-18-4005-2018, https://doi.org/10.5194/acp-18-4005-2018, 2018
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Here we present a quantitative source apportionment of WSOC, isolated from aerosols in China using radiocarbon (14C) and offline high-resolution time of flight aerosol mass spectrometer measurements. We demonstrate a dominant contribution of non-fossil emissions to WSOC aerosols in the Northern Hemisphere. However, the fossil fraction is substantially larger in aerosols from East Asia and the east Asian pollution outflow, especially during winter, due to increasing coal combustion.
Kaspar R. Daellenbach, Imad El-Haddad, Lassi Karvonen, Athanasia Vlachou, Joel C. Corbin, Jay G. Slowik, Maarten F. Heringa, Emily A. Bruns, Samuel M. Luedin, Jean-Luc Jaffrezo, Sönke Szidat, Andrea Piazzalunga, Raquel Gonzalez, Paola Fermo, Valentin Pflueger, Guido Vogel, Urs Baltensperger, and André S. H. Prévôt
Atmos. Chem. Phys., 18, 2155–2174, https://doi.org/10.5194/acp-18-2155-2018, https://doi.org/10.5194/acp-18-2155-2018, 2018
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A novel offline LDI-MS method was developed to analyse particulate matter (PM) collected at multiple sites in central Europe during the entire year of 2013. PM sources were identified by positive matrix factorization. Wood burning emissions were separated according to the burning conditions; inefficient burns had a larger impact on air quality in southern Alpine valleys than in northern Switzerland. Moreover, primary tailpipe exhaust was distinguished from aged/secondary traffic emissions.
Marcel Lerch, Marcel Bliedtner, Christopher-Bastian Roettig, Jan-Uwe Schmidt, Sönke Szidat, Gary Salazar, Roland Zech, Bruno Glaser, Arno Kleber, and Michael Zech
E&G Quaternary Sci. J., 66, 103–108, https://doi.org/10.5194/egqsj-66-103-2018, https://doi.org/10.5194/egqsj-66-103-2018, 2018
Lorenz Wüthrich, Marcel Bliedtner, Imke Kathrin Schäfer, Jana Zech, Fatemeh Shajari, Dorian Gaar, Frank Preusser, Gary Salazar, Sönke Szidat, and Roland Zech
E&G Quaternary Sci. J., 66, 91–100, https://doi.org/10.5194/egqsj-66-91-2017, https://doi.org/10.5194/egqsj-66-91-2017, 2017
Tesfaye A. Berhanu, Sönke Szidat, Dominik Brunner, Ece Satar, Rüdiger Schanda, Peter Nyfeler, Michael Battaglia, Martin Steinbacher, Samuel Hammer, and Markus Leuenberger
Atmos. Chem. Phys., 17, 10753–10766, https://doi.org/10.5194/acp-17-10753-2017, https://doi.org/10.5194/acp-17-10753-2017, 2017
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Fossil fuel CO2 is the major contributor of anthropogenic CO2 in the atmosphere, and accurate quantification is essential to better understand the carbon cycle. Such accurate quantification can be conducted based on radiocarbon measurements. In this study, we present radiocarbon measurements from a tall tower site in Switzerland. From these measurements, we have observed seasonally varying fossil fuel CO2 contributions and a biospheric CO2 component that varies diurnally and seasonally.
Prettiny K. Ma, Yunliang Zhao, Allen L. Robinson, David R. Worton, Allen H. Goldstein, Amber M. Ortega, Jose L. Jimenez, Peter Zotter, André S. H. Prévôt, Sönke Szidat, and Patrick L. Hayes
Atmos. Chem. Phys., 17, 9237–9259, https://doi.org/10.5194/acp-17-9237-2017, https://doi.org/10.5194/acp-17-9237-2017, 2017
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Airborne particulate matter (PM) negatively impacts air quality in cities throughout the world. An important fraction of PM is organic aerosol. We have evaluated and developed several new models for secondary organic aerosol (SOA), which is formed from the chemical processing of gaseous precursors. Using our model results, we have quantified important SOA sources and precursors and also identified possible model parameterizations that could be used for air quality predictions.
Vincent Michoud, Jean Sciare, Stéphane Sauvage, Sébastien Dusanter, Thierry Léonardis, Valérie Gros, Cerise Kalogridis, Nora Zannoni, Anaïs Féron, Jean-Eudes Petit, Vincent Crenn, Dominique Baisnée, Roland Sarda-Estève, Nicolas Bonnaire, Nicolas Marchand, H. Langley DeWitt, Jorge Pey, Aurélie Colomb, François Gheusi, Sonke Szidat, Iasonas Stavroulas, Agnès Borbon, and Nadine Locoge
Atmos. Chem. Phys., 17, 8837–8865, https://doi.org/10.5194/acp-17-8837-2017, https://doi.org/10.5194/acp-17-8837-2017, 2017
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The ChArMEx SOP2 field campaign took place from 15 July to 5 August 2013 in the western Mediterranean Basin at Ersa, a remote site in Cape Corse. Exhaustive descriptions of the chemical composition of air masses in gas and aerosol phase were performed. An analysis of these measurements was performed using various source-receptor approaches. This led to the identification of several factors linked to primary sources but also to secondary processes of both biogenic and anthropogenic origin.
Célia J. Sapart, Natalia Shakhova, Igor Semiletov, Joachim Jansen, Sönke Szidat, Denis Kosmach, Oleg Dudarev, Carina van der Veen, Matthias Egger, Valentine Sergienko, Anatoly Salyuk, Vladimir Tumskoy, Jean-Louis Tison, and Thomas Röckmann
Biogeosciences, 14, 2283–2292, https://doi.org/10.5194/bg-14-2283-2017, https://doi.org/10.5194/bg-14-2283-2017, 2017
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The Arctic Ocean, especially the Siberian shelves, overlays large areas of subsea permafrost that is degrading. We show that methane with a biogenic origin is emitted from this permafrost. At locations where bubble plumes have been observed, methane can escape oxidation in the surface sediment and rapidly migrate through the very shallow water column of this region to escape to the atmosphere, generating a positive radiative feedback.
Peter Zotter, Hanna Herich, Martin Gysel, Imad El-Haddad, Yanlin Zhang, Griša Močnik, Christoph Hüglin, Urs Baltensperger, Sönke Szidat, and André S. H. Prévôt
Atmos. Chem. Phys., 17, 4229–4249, https://doi.org/10.5194/acp-17-4229-2017, https://doi.org/10.5194/acp-17-4229-2017, 2017
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Most studies use a single Ångström exponent for wood burning (αWB) and traffic (αTR) emissions in the Aethalometer model, used for source apportionment of black carbon, derived from previous work. However, accurate determination of the α values is currently lacking. Comparing radiocarbon measurements (14C) with the Aehtalometer model, good agreement was found, indicating that the Aethalometer model reproduces reasonably well the 14C results using our best estimate of a single αWB and αTR.
Ulrike Dusek, Regina Hitzenberger, Anne Kasper-Giebl, Magdalena Kistler, Harro A. J. Meijer, Sönke Szidat, Lukas Wacker, Rupert Holzinger, and Thomas Röckmann
Atmos. Chem. Phys., 17, 3233–3251, https://doi.org/10.5194/acp-17-3233-2017, https://doi.org/10.5194/acp-17-3233-2017, 2017
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Measurements of the radioactive carbon isotope 14C allow to identify the sources of aerosol carbon. We report an extensive 14C source apportionment record in the Netherlands with samples covering a whole year. We discovered that long-range transport has a large influence on aerosol carbon levels. Fossil fuel carbon is least influenced by long-range transport and more regional in origin. Biomass burning seems to be a minor source of aerosol carbon in the Netherlands.
Chiara Uglietti, Alexander Zapf, Theo Manuel Jenk, Michael Sigl, Sönke Szidat, Gary Salazar, and Margit Schwikowski
The Cryosphere, 10, 3091–3105, https://doi.org/10.5194/tc-10-3091-2016, https://doi.org/10.5194/tc-10-3091-2016, 2016
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A meaningful interpretation of the climatic history contained in ice cores requires a precise chronology. For dating the older and deeper part of the glaciers, radiocarbon analysis can be used when organic matter such as plant or insect fragments are found in the ice. Since this happens rarely, a complementary dating tool, based on radiocarbon dating of the insoluble fraction of carbonaceous aerosols entrapped in the ice, allows for ice dating between 200 and more than 10 000 years.
Jianzhong Xu, Jinsen Shi, Qi Zhang, Xinlei Ge, Francesco Canonaco, André S. H. Prévôt, Matthias Vonwiller, Sönke Szidat, Jinming Ge, Jianmin Ma, Yanqing An, Shichang Kang, and Dahe Qin
Atmos. Chem. Phys., 16, 14937–14957, https://doi.org/10.5194/acp-16-14937-2016, https://doi.org/10.5194/acp-16-14937-2016, 2016
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This study deployed an AMS field study in Lanzhou, a city in northwestern China, evaluating the chemical composition, sources, and processes of urban aerosols during wintertime. In comparison with the results during summer in Lanzhou, the air pollution during winter was more severe and the sources were more complex. In addition, this paper estimates the contributions of fossil and non-fossil sources of organic carbon to primary and secondary organic carbon using the carbon isotopic method.
Vidmantas Ulevicius, Steigvilė Byčenkienė, Carlo Bozzetti, Athanasia Vlachou, Kristina Plauškaitė, Genrik Mordas, Vadimas Dudoitis, Gülcin Abbaszade, Vidmantas Remeikis, Andrius Garbaras, Agne Masalaite, Jan Blees, Roman Fröhlich, Kaspar R. Dällenbach, Francesco Canonaco, Jay G. Slowik, Josef Dommen, Ralf Zimmermann, Jürgen Schnelle-Kreis, Gary A. Salazar, Konstantinos Agrios, Sönke Szidat, Imad El Haddad, and André S. H. Prévôt
Atmos. Chem. Phys., 16, 5513–5529, https://doi.org/10.5194/acp-16-5513-2016, https://doi.org/10.5194/acp-16-5513-2016, 2016
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In early spring the Baltic region is frequently affected by high pollution events due to biomass burning in that area. Here we present a comprehensive study to investigate the impact of biomass/grass burning (BB) on the evolution and composition of aerosol in Preila, Lithuania, during springtime open fires.
Junwen Liu, Jun Li, Di Liu, Ping Ding, Chengde Shen, Yangzhi Mo, Xinming Wang, Chunling Luo, Zhineng Cheng, Sönke Szidat, Yanlin Zhang, Yingjun Chen, and Gan Zhang
Atmos. Chem. Phys., 16, 2985–2996, https://doi.org/10.5194/acp-16-2985-2016, https://doi.org/10.5194/acp-16-2985-2016, 2016
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Many Chinese cities now are suffering the high loadings of fine particular matters, which can bring a lot of negative impacts on air quality, human health, and the climate system. The Chinese government generally focuses on the control of the emissions from vehicles and industry. Our results evidently show that the burning of biomass materials such as wood and agricultural residues can lead to the urban air pollution in China. The characteristic of haze covering China is distinct from regions.
K. R. Daellenbach, C. Bozzetti, A. Křepelová, F. Canonaco, R. Wolf, P. Zotter, P. Fermo, M. Crippa, J. G. Slowik, Y. Sosedova, Y. Zhang, R.-J. Huang, L. Poulain, S. Szidat, U. Baltensperger, I. El Haddad, and A. S. H. Prévôt
Atmos. Meas. Tech., 9, 23–39, https://doi.org/10.5194/amt-9-23-2016, https://doi.org/10.5194/amt-9-23-2016, 2016
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In this study, we developed an offline technique using the AMS for the characterization of the chemical fingerprints of aerosols collected on quartz filters, and evaluated the suitability of the organic mass spectral data for source apportionment. This technique may be used to enhance the AMS capabilities in measuring size-fractionated, spatially resolved long-term data sets.
G. O. Mouteva, S. M. Fahrni, G. M. Santos, J. T. Randerson, Y.-L. Zhang, S. Szidat, and C. I. Czimczik
Atmos. Meas. Tech., 8, 3729–3743, https://doi.org/10.5194/amt-8-3729-2015, https://doi.org/10.5194/amt-8-3729-2015, 2015
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We describe a stepwise uncertainty analysis of 14C measurements of organic (OC) and elemental (EC) carbon fractions of aerosols. Using the Swiss_4S thermal-optical protocol with a newly established trapping setup, we show that we can efficiently isolate and trap each carbon fraction and perform 14C analysis of ultra-small OC and EC samples with high accuracy and low 14C blanks. Our study presents a first step towards the development of a common protocol for OC and EC 14C measurements.
P. L. Hayes, A. G. Carlton, K. R. Baker, R. Ahmadov, R. A. Washenfelder, S. Alvarez, B. Rappenglück, J. B. Gilman, W. C. Kuster, J. A. de Gouw, P. Zotter, A. S. H. Prévôt, S. Szidat, T. E. Kleindienst, J. H. Offenberg, P. K. Ma, and J. L. Jimenez
Atmos. Chem. Phys., 15, 5773–5801, https://doi.org/10.5194/acp-15-5773-2015, https://doi.org/10.5194/acp-15-5773-2015, 2015
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(1) Four different parameterizations for the formation and chemical evolution of secondary organic aerosol (SOA) are evaluated using a box model representing the Los Angeles region during the CalNex campaign.
(2) The SOA formed only from the oxidation of VOCs is insufficient to explain the observed SOA concentrations.
(3) The amount of SOA mass formed from diesel vehicle emissions is estimated to be 16-27%.
(4) Modeled SOA depends strongly on the P-S/IVOC volatility distribution.
J. P. Krüger, J. Leifeld, S. Glatzel, S. Szidat, and C. Alewell
Biogeosciences, 12, 2861–2871, https://doi.org/10.5194/bg-12-2861-2015, https://doi.org/10.5194/bg-12-2861-2015, 2015
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Biogeochemical soil parameters are studied to detect peatland degradation along a land use gradient (intensive, extensive, near-natural). Stable carbon isotopes, radiocarbon ages and ash content confirm peat growth in the near-natural bog but also indicate previous degradation. When the bog is managed extensively or intensively as grassland, all parameters indicate degradation and substantial C loss of the order of 18.8 to 42.9 kg C m-2.
L. R. Crilley, W. J. Bloss, J. Yin, D. C. S. Beddows, R. M. Harrison, J. D. Allan, D. E. Young, M. Flynn, P. Williams, P. Zotter, A. S. H. Prevot, M. R. Heal, J. F. Barlow, C. H. Halios, J. D. Lee, S. Szidat, and C. Mohr
Atmos. Chem. Phys., 15, 3149–3171, https://doi.org/10.5194/acp-15-3149-2015, https://doi.org/10.5194/acp-15-3149-2015, 2015
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Wood is a renewable fuel but its combustion for residential heating releases a number of locally acting air pollutants, most notably particulate matter known to have adverse effects on human health. This paper used chemical tracers for wood smoke to estimate the contribution that burning wood makes to concentrations of airborne particles in the atmosphere of southern England and most particularly in London.
Y.-L. Zhang, R.-J. Huang, I. El Haddad, K.-F. Ho, J.-J. Cao, Y. Han, P. Zotter, C. Bozzetti, K. R. Daellenbach, F. Canonaco, J. G. Slowik, G. Salazar, M. Schwikowski, J. Schnelle-Kreis, G. Abbaszade, R. Zimmermann, U. Baltensperger, A. S. H. Prévôt, and S. Szidat
Atmos. Chem. Phys., 15, 1299–1312, https://doi.org/10.5194/acp-15-1299-2015, https://doi.org/10.5194/acp-15-1299-2015, 2015
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Source apportionment of fine carbonaceous aerosols using radiocarbon and other organic markers measurements during 2013 winter haze episodes was conducted at four megacities in China. Our results demonstrate that fossil emissions predominate EC with a mean contribution of 75±8%, whereas non-fossil sources account for 55±10% of OC; and the increment of TC on heavily polluted days was mainly driven by the increase of secondary OC from both fossil-fuel and non-fossil emissions.
P. Zotter, V. G. Ciobanu, Y. L. Zhang, I. El-Haddad, M. Macchia, K. R. Daellenbach, G. A. Salazar, R.-J. Huang, L. Wacker, C. Hueglin, A. Piazzalunga, P. Fermo, M. Schwikowski, U. Baltensperger, S. Szidat, and A. S. H. Prévôt
Atmos. Chem. Phys., 14, 13551–13570, https://doi.org/10.5194/acp-14-13551-2014, https://doi.org/10.5194/acp-14-13551-2014, 2014
Related subject area
Subject: Vegetation Dynamics | Archive: Terrestrial Archives | Timescale: Holocene
Refining data–data and data–model vegetation comparisons using the Earth mover's distance (EMD)
Palynological evidence reveals an arid early Holocene for the northeast Tibetan Plateau
Holocene wildfire regimes in western Siberia: interaction between peatland moisture conditions and the composition of plant functional types
2400 years of climate and human-induced environmental change recorded in sediments of Lake Młynek in northern Poland
The 4.2 ka event in the vegetation record of the central Mediterranean
Vegetation and geochemical responses to Holocene rapid climate change in the Sierra Nevada (southeastern Iberia): the Laguna Hondera record
Response of Pinus sylvestris var. mongolica to water change and drought history reconstruction in the past 260 years, northeast China
Vegetation history and paleoclimate at Lake Dojran (FYROM/Greece) during the Late Glacial and Holocene
Holocene climate aridification trend and human impact interrupted by millennial- and centennial-scale climate fluctuations from a new sedimentary record from Padul (Sierra Nevada, southern Iberian Peninsula)
Dendrochronologically dated pine stumps document phase-wise bog expansion at a northwest German site between ca. 6700 and ca. 3400 BC
Autumn–winter minimum temperature changes in the southern Sikhote-Alin mountain range of northeastern Asia since 1529 AD
Postglacial fire history and interactions with vegetation and climate in southwestern Yunnan Province of China
Precipitation changes in the Mediterranean basin during the Holocene from terrestrial and marine pollen records: a model–data comparison
Environmental changes, climate and anthropogenic impact in south-east Tunisia during the last 8 kyr
Climate variability and human impact in South America during the last 2000 years: synthesis and perspectives from pollen records
Holocene Asian monsoon evolution revealed by a pollen record from an alpine lake on the southeastern margin of the Qinghai–Tibetan Plateau, China
7300 years of vegetation history and climate for NW Malta: a Holocene perspective
Climate-driven expansion of blanket bogs in Britain during the Holocene
Late Holocene vegetation changes in relation with climate fluctuations and human activity in Languedoc (southern France)
Effects of past climate variability on fire and vegetation in the cerrãdo savanna of the Huanchaca Mesetta, NE Bolivia
Environmental and climatic changes in central Chilean Patagonia since the Late Glacial (Mallín El Embudo, 44° S)
Quantitative reconstruction of precipitation changes on the NE Tibetan Plateau since the Last Glacial Maximum – extending the concept of pollen source area to pollen-based climate reconstructions from large lakes
The last 7 millennia of vegetation and climate changes at Lago di Pergusa (central Sicily, Italy)
Contrasting patterns of climatic changes during the Holocene across the Italian Peninsula reconstructed from pollen data
Climate and vegetation changes during the Lateglacial and early–middle Holocene at Lake Ledro (southern Alps, Italy)
The Medieval Climate Anomaly and the Little Ice Age in the eastern Ecuadorian Andes
Palynological evidence for gradual vegetation and climate changes during the African Humid Period termination at 13°N from a Mega-Lake Chad sedimentary sequence
Climate, people, fire and vegetation: new insights into vegetation dynamics in the Eastern Mediterranean since the 1st century AD
Pollen-based reconstruction of Holocene vegetation and climate in southern Italy: the case of Lago Trifoglietti
Vegetation history of central Chukotka deduced from permafrost paleoenvironmental records of the El'gygytgyn Impact Crater
A seesaw in Mediterranean precipitation during the Roman Period linked to millennial-scale changes in the North Atlantic
Hydroclimate variability in the low-elevation Atacama Desert over the last 2500 yr
Pollen, vegetation change and climate at Lake Barombi Mbo (Cameroon) during the last ca. 33 000 cal yr BP: a numerical approach
Late Holocene plant and climate evolution at Lake Yoa, northern Chad: pollen data and climate simulations
Holocene vegetation and biomass changes on the Tibetan Plateau – a model-pollen data comparison
Vegetation response to the "African Humid Period" termination in Central Cameroon (7° N) – new pollen insight from Lake Mbalang
Putting the rise of the Inca Empire within a climatic and land management context
Manuel Chevalier, Anne Dallmeyer, Nils Weitzel, Chenzhi Li, Jean-Philippe Baudouin, Ulrike Herzschuh, Xianyong Cao, and Andreas Hense
Clim. Past, 19, 1043–1060, https://doi.org/10.5194/cp-19-1043-2023, https://doi.org/10.5194/cp-19-1043-2023, 2023
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Data–data and data–model vegetation comparisons are commonly based on comparing single vegetation estimates. While this approach generates good results on average, reducing pollen assemblages to single single plant functional type (PFT) or biome estimates can oversimplify the vegetation signal. We propose using a multivariate metric, the Earth mover's distance (EMD), to include more details about the vegetation structure when performing such comparisons.
Nannan Wang, Lina Liu, Xiaohuan Hou, Yanrong Zhang, Haicheng Wei, and Xianyong Cao
Clim. Past, 18, 2381–2399, https://doi.org/10.5194/cp-18-2381-2022, https://doi.org/10.5194/cp-18-2381-2022, 2022
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We reconstructed the vegetation and climate change since the last 14.2 ka BP from a fossil pollen record together with multiple proxies (grain size, contents of total organic carbon and total nitrogen) on the northeast Tibetan Plateau. The results reveal that an arid climate occurs in the early Holocene and the vegetation could be disturbed by human activities to some extent after ca. 0.24 ka BP (1710 CE).
Angelica Feurdean, Andrei-Cosmin Diaconu, Mirjam Pfeiffer, Mariusz Gałka, Simon M. Hutchinson, Geanina Butiseaca, Natalia Gorina, Spassimir Tonkov, Aidin Niamir, Ioan Tantau, Hui Zhang, and Sergey Kirpotin
Clim. Past, 18, 1255–1274, https://doi.org/10.5194/cp-18-1255-2022, https://doi.org/10.5194/cp-18-1255-2022, 2022
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We used palaeoecological records from peatlands in southern Siberia. We showed that warmer climate conditions have lowered the water level and increased the fuel amount and flammability, consequently also increasing the frequency and severity of fires as well as the composition of tree types.
Fabian Welc, Jerzy Nitychoruk, Leszek Marks, Krzysztof Bińka, Anna Rogóż-Matyszczak, Milena Obremska, and Abdelfattah Zalat
Clim. Past, 17, 1181–1198, https://doi.org/10.5194/cp-17-1181-2021, https://doi.org/10.5194/cp-17-1181-2021, 2021
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Młynek Lake, located near the village of Janiki Wielkie (in the Warmia and Masuria region of north-east Poland) has been selected for multi-faceted palaeoenvironmental research based on a precise radiocarbon scale. Bottom sediments of this reservoir also contain unique information about anthropogenic activity and climate changes during last 2400 years.
Federico Di Rita and Donatella Magri
Clim. Past, 15, 237–251, https://doi.org/10.5194/cp-15-237-2019, https://doi.org/10.5194/cp-15-237-2019, 2019
Jose M. Mesa-Fernández, Gonzalo Jiménez-Moreno, Marta Rodrigo-Gámiz, Antonio García-Alix, Francisco J. Jiménez-Espejo, Francisca Martínez-Ruiz, R. Scott Anderson, Jon Camuera, and María J. Ramos-Román
Clim. Past, 14, 1687–1706, https://doi.org/10.5194/cp-14-1687-2018, https://doi.org/10.5194/cp-14-1687-2018, 2018
Liangjun Zhu, Qichao Yao, David J. Cooper, Shijie Han, and Xiaochun Wang
Clim. Past, 14, 1213–1228, https://doi.org/10.5194/cp-14-1213-2018, https://doi.org/10.5194/cp-14-1213-2018, 2018
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This paper presents a 260-year tree-ring-based PDSI reconstruction for the central Daxing'an Mountains, northeast China. A warm–wet pattern was identified for the Daxing'an Mountains in recent decades, while a warm–dry pattern was found for the Mongolian Plateau. Overall, the dry/wet variability of the Daxing'an Mountains and its relationship with the surrounding areas might be driven by Pacific and Atlantic Ocean oscillations.
Alessia Masi, Alexander Francke, Caterina Pepe, Matthias Thienemann, Bernd Wagner, and Laura Sadori
Clim. Past, 14, 351–367, https://doi.org/10.5194/cp-14-351-2018, https://doi.org/10.5194/cp-14-351-2018, 2018
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The first high-resolution Lake Dojran pollen record for the last 12 500 years is presented. The ecological succession shows Late Glacial steppe vegetation gradually replaced, since 11 500 yr BP, by Holocene mesophilous forests. The first human traces are recorded around 5000 yr BP and increased considerably since the Bronze Age. Pollen data and sedimentological, biomarker and diatom data available from the same core contribute to an understanding of the environmental history of the Balkans.
María J. Ramos-Román, Gonzalo Jiménez-Moreno, Jon Camuera, Antonio García-Alix, R. Scott Anderson, Francisco J. Jiménez-Espejo, and José S. Carrión
Clim. Past, 14, 117–137, https://doi.org/10.5194/cp-14-117-2018, https://doi.org/10.5194/cp-14-117-2018, 2018
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In this study we carried out a multiproxy high-resolution analysis on a sediment record from the Padul Basin in the Sierra Nevada (southern Iberian Peninsula). Padul is a classical and very unique site from the Mediterranean area as it contains a very long and continuous Quaternary sedimentary record. However, the uppermost part of the record was never recovered. In this study we focus on the last 4700 cal yr BP of Holocene climate variability and human activity in the Mediterranean area.
Inke Elisabeth Maike Achterberg, Jan Eckstein, Bernhard Birkholz, Andreas Bauerochse, and Hanns Hubert Leuschner
Clim. Past, 14, 85–100, https://doi.org/10.5194/cp-14-85-2018, https://doi.org/10.5194/cp-14-85-2018, 2018
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At a bog site at Totes Moor in northwest Germany a layer of pine tree stumps at the fen–bog transition was exposed by peat mining. The lateral expansion of ombrotrophic bog between 6703 BC and 3403 BC was reconstructed using the locations and dendrochronological dates of the tree stumps. The spatial pattern relates to the elevation a.s.l. of the mineral base beneath the peat. The temporal distribution of bog expansion pulses relates to climatic variation.
Olga N. Ukhvatkina, Alexander M. Omelko, Alexander A. Zhmerenetsky, and Tatyana Y. Petrenko
Clim. Past, 14, 57–71, https://doi.org/10.5194/cp-14-57-2018, https://doi.org/10.5194/cp-14-57-2018, 2018
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We reconstructed the minimum temperature for 505 years and found cold and warm periods, which correlate with reconstructed data for the Northern Hemisphere and neighboring territories. Our reconstructions are reflected in the fluctuations in ENSO, the short-term solar cycle, PDO, and the de Vries 200-year solar activity cycle. This is the first temperature reconstruction for this region and it is important for studying the climatic processes in the study region and in all of northeastern Asia.
Xiayun Xiao, Simon G. Haberle, Ji Shen, Bin Xue, Mark Burrows, and Sumin Wang
Clim. Past, 13, 613–627, https://doi.org/10.5194/cp-13-613-2017, https://doi.org/10.5194/cp-13-613-2017, 2017
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Knowledge of the past fire activity is a key for making sustainable management policies for forest ecosystems. A high-resolution macroscopic charcoal record from southwestern China reveals the postglacial fire history. Combined with the regional climate records and vegetation histories, it is concluded that fire was mainly controlled by climate before 4.3 ka and by combined action of climate and humans after 4.3 ka, and the relationship between fire activity and vegetation were also examined.
Odile Peyron, Nathalie Combourieu-Nebout, David Brayshaw, Simon Goring, Valérie Andrieu-Ponel, Stéphanie Desprat, Will Fletcher, Belinda Gambin, Chryssanthi Ioakim, Sébastien Joannin, Ulrich Kotthoff, Katerina Kouli, Vincent Montade, Jörg Pross, Laura Sadori, and Michel Magny
Clim. Past, 13, 249–265, https://doi.org/10.5194/cp-13-249-2017, https://doi.org/10.5194/cp-13-249-2017, 2017
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This study aims to reconstruct the climate evolution of the Mediterranean region during the Holocene from pollen data and model outputs. The model- and pollen-inferred precipitation estimates show overall agreement: the eastern Medit. experienced wetter-than-present summer conditions during the early–late Holocene. This regional climate model highlights how the patchy nature of climate signals and data in the Medit. may lead to stronger local signals than the large-scale pattern suggests.
Sahbi Jaouadi, Vincent Lebreton, Viviane Bout-Roumazeilles, Giuseppe Siani, Rached Lakhdar, Ridha Boussoffara, Laurent Dezileau, Nejib Kallel, Beya Mannai-Tayech, and Nathalie Combourieu-Nebout
Clim. Past, 12, 1339–1359, https://doi.org/10.5194/cp-12-1339-2016, https://doi.org/10.5194/cp-12-1339-2016, 2016
S. G. A. Flantua, H. Hooghiemstra, M. Vuille, H. Behling, J. F. Carson, W. D. Gosling, I. Hoyos, M. P. Ledru, E. Montoya, F. Mayle, A. Maldonado, V. Rull, M. S. Tonello, B. S. Whitney, and C. González-Arango
Clim. Past, 12, 483–523, https://doi.org/10.5194/cp-12-483-2016, https://doi.org/10.5194/cp-12-483-2016, 2016
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This paper serves as a guide to high-quality pollen records in South America that capture environmental variability during the last 2 millennia. We identify the pollen records suitable for climate modelling and discuss their sensitivity to the spatial signature of climate modes. Furthermore, evidence for human land use in pollen records is useful for archaeological hypothesis testing and important in distinguishing natural from anthropogenically driven vegetation change.
Enlou Zhang, Yongbo Wang, Weiwei Sun, and Ji Shen
Clim. Past, 12, 415–427, https://doi.org/10.5194/cp-12-415-2016, https://doi.org/10.5194/cp-12-415-2016, 2016
B. Gambin, V. Andrieu-Ponel, F. Médail, N. Marriner, O. Peyron, V. Montade, T. Gambin, C. Morhange, D. Belkacem, and M. Djamali
Clim. Past, 12, 273–297, https://doi.org/10.5194/cp-12-273-2016, https://doi.org/10.5194/cp-12-273-2016, 2016
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Based on the study of ancient microfossils, such as pollen and spores, this paper explores climate change in a Mediterranean island context. Using a multi-disciplinary approach this original research corroborates existing archaeological and historical data. It also uses comparative data from elsewhere in the central Mediterranean to ensure that the current research is placed within the appropriate geographic context.
A. V. Gallego-Sala, D. J. Charman, S. P. Harrison, G. Li, and I. C. Prentice
Clim. Past, 12, 129–136, https://doi.org/10.5194/cp-12-129-2016, https://doi.org/10.5194/cp-12-129-2016, 2016
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It has become a well-established paradigm that blanket bog landscapes in the British Isles are a result of forest clearance by early human populations. We provide a novel test of this hypothesis using results from bioclimatic modelling driven by cimate reconstructions compared with a database of peat initiation dates. Both results show similar patterns of peat initiation over time and space. This suggests that climate was the main driver of blanket bog inception and not human disturbance.
J. Azuara, N. Combourieu-Nebout, V. Lebreton, F. Mazier, S. D. Müller, and L. Dezileau
Clim. Past, 11, 1769–1784, https://doi.org/10.5194/cp-11-1769-2015, https://doi.org/10.5194/cp-11-1769-2015, 2015
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High-resolution pollen analyses undertaken on two cores from southern France allow us to separate anthropogenic effects from climatic impacts on environments over the last 4500 years. A long-term aridification trend is highlighted during the late Holocene, and three superimposed arid events are recorded around 4400, 2600 and 1200cal BP coinciding in time with Bond events. Human influence on vegetation is attested since the Bronze Age and became dominant at the beginning of the High Middle Ages.
S. Y. Maezumi, M. J. Power, F. E. Mayle, K. K. McLauchlan, and J. Iriarte
Clim. Past, 11, 835–853, https://doi.org/10.5194/cp-11-835-2015, https://doi.org/10.5194/cp-11-835-2015, 2015
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A 14,500-year, high-resolution, sedimentary record from Huanchaca Mesetta, a palm swamp located in the cerrãdo savanna in northeastern Bolivia, was analyzed for phytoliths, stable isotopes and charcoal. A non-analogue, cold-adapted vegetation community dominated the Late Glacial-Early Holocene period (14.5-9ka), which included trees and C3 Pooideae and C4 Panicoideae grasses. The Late Glacial vegetation was fire sensitive and fire activity during this period was low, likely responding to fuel av
M. E. de Porras, A. Maldonado, F. A. Quintana, A. Martel-Cea, O. Reyes, and C. Méndez
Clim. Past, 10, 1063–1078, https://doi.org/10.5194/cp-10-1063-2014, https://doi.org/10.5194/cp-10-1063-2014, 2014
Y. Wang, U. Herzschuh, L. S. Shumilovskikh, S. Mischke, H. J. B. Birks, J. Wischnewski, J. Böhner, F. Schlütz, F. Lehmkuhl, B. Diekmann, B. Wünnemann, and C. Zhang
Clim. Past, 10, 21–39, https://doi.org/10.5194/cp-10-21-2014, https://doi.org/10.5194/cp-10-21-2014, 2014
L. Sadori, E. Ortu, O. Peyron, G. Zanchetta, B. Vannière, M. Desmet, and M. Magny
Clim. Past, 9, 1969–1984, https://doi.org/10.5194/cp-9-1969-2013, https://doi.org/10.5194/cp-9-1969-2013, 2013
O. Peyron, M. Magny, S. Goring, S. Joannin, J.-L. de Beaulieu, E. Brugiapaglia, L. Sadori, G. Garfi, K. Kouli, C. Ioakim, and N. Combourieu-Nebout
Clim. Past, 9, 1233–1252, https://doi.org/10.5194/cp-9-1233-2013, https://doi.org/10.5194/cp-9-1233-2013, 2013
S. Joannin, B. Vannière, D. Galop, O. Peyron, J. N. Haas, A. Gilli, E. Chapron, S. B. Wirth, F. Anselmetti, M. Desmet, and M. Magny
Clim. Past, 9, 913–933, https://doi.org/10.5194/cp-9-913-2013, https://doi.org/10.5194/cp-9-913-2013, 2013
M.-P. Ledru, V. Jomelli, P. Samaniego, M. Vuille, S. Hidalgo, M. Herrera, and C. Ceron
Clim. Past, 9, 307–321, https://doi.org/10.5194/cp-9-307-2013, https://doi.org/10.5194/cp-9-307-2013, 2013
P. G. C. Amaral, A. Vincens, J. Guiot, G. Buchet, P. Deschamps, J.-C. Doumnang, and F. Sylvestre
Clim. Past, 9, 223–241, https://doi.org/10.5194/cp-9-223-2013, https://doi.org/10.5194/cp-9-223-2013, 2013
J. Bakker, E. Paulissen, D. Kaniewski, J. Poblome, V. De Laet, G. Verstraeten, and M. Waelkens
Clim. Past, 9, 57–87, https://doi.org/10.5194/cp-9-57-2013, https://doi.org/10.5194/cp-9-57-2013, 2013
S. Joannin, E. Brugiapaglia, J.-L. de Beaulieu, L. Bernardo, M. Magny, O. Peyron, S. Goring, and B. Vannière
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Short summary
We present a novel post Last Glacial Maximum sediment record from Moossee (Swiss Plateau, southern central Europe). For the first time, five major reorganizations of vegetation could be definitely linked to paramount postglacial temperature and/or moisture changes. Present-day beech-dominated forests have been resilient to long-term climate change and human land use. They may prevail in future if climate warming does not exceed the amplitude of Mid Holocene temperature and moisture variability.
We present a novel post Last Glacial Maximum sediment record from Moossee (Swiss Plateau,...
