Articles | Volume 15, issue 2
https://doi.org/10.5194/cp-15-593-2019
© Author(s) 2019. 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-15-593-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
28 Mar 2019
Research article |
| 28 Mar 2019
| 28 Mar 2019
Impact of millennial-scale oceanic variability on the Greenland ice-sheet evolution throughout the last glacial period
Departamento de Física de la Tierra y Astrofísica,
Facultad de Ciencias Físicas, Universidad Complutense de Madrid, 28040, Madrid, Spain
Instituto de Geociencias, Consejo Superior de Investigaciones Cientificas-Universidad Complutense de Madrid, 28040 Madrid, Spain
Alexander Robinson
Departamento de Física de la Tierra y Astrofísica,
Facultad de Ciencias Físicas, Universidad Complutense de Madrid, 28040, Madrid, Spain
Instituto de Geociencias, Consejo Superior de Investigaciones Cientificas-Universidad Complutense de Madrid, 28040 Madrid, Spain
now at: Faculty of Geology and Geoenvironment, University of Athens, 15784 Athens, Greece
Jorge Alvarez-Solas
Departamento de Física de la Tierra y Astrofísica,
Facultad de Ciencias Físicas, Universidad Complutense de Madrid, 28040, Madrid, Spain
Instituto de Geociencias, Consejo Superior de Investigaciones Cientificas-Universidad Complutense de Madrid, 28040 Madrid, Spain
Marisa Montoya
Departamento de Física de la Tierra y Astrofísica,
Facultad de Ciencias Físicas, Universidad Complutense de Madrid, 28040, Madrid, Spain
Instituto de Geociencias, Consejo Superior de Investigaciones Cientificas-Universidad Complutense de Madrid, 28040 Madrid, Spain
Related authors
Katrina Lutz, Ilaria Tabone, Angelika Humbert, and Matthias Braun
EGUsphere, https://doi.org/10.5194/egusphere-2024-3056, https://doi.org/10.5194/egusphere-2024-3056, 2024
Short summary
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Supraglacial lakes develop from meltwater collecting on the surface of glaciers. These lakes can drain rapidly, discharging meltwater to the glacier bed. In this study, we assess the spatial and temporal distribution of rapid drainages in Northeast Greenland using optical satellite images. After comparing rapid drainage occurrence with several environmental and geophysical parameters, little indication of the influencing conditions for a rapid drainage was found.
Javier Blasco, Ilaria Tabone, Daniel Moreno-Parada, Alexander Robinson, Jorge Alvarez-Solas, Frank Pattyn, and Marisa Montoya
Clim. Past, 20, 1919–1938, https://doi.org/10.5194/cp-20-1919-2024, https://doi.org/10.5194/cp-20-1919-2024, 2024
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In this study, we assess Antarctic tipping points which may had been crossed during the mid-Pliocene Warm Period. For this, we use data from the PlioMIP2 ensemble. Additionally, we investigate various sources of uncertainty, like ice dynamics and bedrock configuration. Our research significantly enhances our comprehension of Antarctica's response to a warming climate, shedding light on potential future tipping points that may be surpassed.
Ilaria Tabone, Alexander Robinson, Jorge Alvarez-Solas, and Marisa Montoya
The Cryosphere, 13, 1911–1923, https://doi.org/10.5194/tc-13-1911-2019, https://doi.org/10.5194/tc-13-1911-2019, 2019
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Recent reconstructions show that the North East Greenland Ice Stream (NEGIS) retreated away from its present-day position by 20–40 km during MIS-3. Atmospheric and external forcings were proposed as potential causes of this retreat, but the role of the ocean was not considered. Here, using a 3-D ice-sheet model, we suggest that oceanic warming is sufficient to induce a retreat of the NEGIS margin of many tens of kilometres during MIS-3, helping to explain this conundrum.
Javier Blasco, Ilaria Tabone, Jorge Alvarez-Solas, Alexander Robinson, and Marisa Montoya
Clim. Past, 15, 121–133, https://doi.org/10.5194/cp-15-121-2019, https://doi.org/10.5194/cp-15-121-2019, 2019
Short summary
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The LGP is a period punctuated by the presence of several abrupt climate events and sea-level variations of up to 20 m at millennial timescales. The origin of those fluctuations is attributed to NH paleo ice sheets, but a contribution from the AIS cannot be excluded. Here, for the first time, we investigate the response of the AIS to millennial climate variability using an ice sheet–shelf model. We shows that the AIS produces substantial sea-level rises and grounding line migrations.
Ilaria Tabone, Javier Blasco, Alexander Robinson, Jorge Alvarez-Solas, and Marisa Montoya
Clim. Past, 14, 455–472, https://doi.org/10.5194/cp-14-455-2018, https://doi.org/10.5194/cp-14-455-2018, 2018
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The response of the Greenland Ice Sheet (GrIS) to palaeo-oceanic changes on a glacial–interglacial timescale is studied from a modelling perspective. A 3-D hybrid ice-sheet–shelf model which includes a parameterization of the basal melting rate at the GrIS marine margins is used. The results show that the oceanic forcing plays a key role in the GrIS evolution, not only by controlling the ice retreat during the deglaciation but also by driving the ice expansion in glacial periods.
Daniel Moreno-Parada, Alexander Robinson, Marisa Montoya, and Jorge Alvarez-Solas
Geosci. Model Dev., 18, 3895–3919, https://doi.org/10.5194/gmd-18-3895-2025, https://doi.org/10.5194/gmd-18-3895-2025, 2025
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We introduce Nix, an ice-sheet model designed for understanding how large masses of ice behave. Nix is a computer programme that simulates the movement and temperature evolution in ice sheets. It helps us study how ice sheets respond to changes in the atmosphere and ocean. We found that ice temperatures play an essential role in determining the motion and stability of ice sheets. Nix is a useful tool for learning how climate change affects polar ice sheets.
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Earth Syst. Dynam., 16, 915–937, https://doi.org/10.5194/esd-16-915-2025, https://doi.org/10.5194/esd-16-915-2025, 2025
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The climate of the last 3 Myr has varied between cold and warm periods. Numerous independent mechanisms have been proposed to explain this; however, no effort has been made to study their competing effects. Here we present a simple but physically motivated model that includes these mechanisms in a modular way. We identify ice-sheet dynamics and lithosphere displacement as main triggers, but reproducing the climate records additionally requires the natural darkening of ice.
Ricarda Winkelmann, Donovan P. Dennis, Jonathan F. Donges, Sina Loriani, Ann Kristin Klose, Jesse F. Abrams, Jorge Alvarez-Solas, Torsten Albrecht, David Armstrong McKay, Sebastian Bathiany, Javier Blasco Navarro, Victor Brovkin, Eleanor Burke, Gokhan Danabasoglu, Reik V. Donner, Markus Drüke, Goran Georgievski, Heiko Goelzer, Anna B. Harper, Gabriele Hegerl, Marina Hirota, Aixue Hu, Laura C. Jackson, Colin Jones, Hyungjun Kim, Torben Koenigk, Peter Lawrence, Timothy M. Lenton, Hannah Liddy, José Licón-Saláiz, Maxence Menthon, Marisa Montoya, Jan Nitzbon, Sophie Nowicki, Bette Otto-Bliesner, Francesco Pausata, Stefan Rahmstorf, Karoline Ramin, Alexander Robinson, Johan Rockström, Anastasia Romanou, Boris Sakschewski, Christina Schädel, Steven Sherwood, Robin S. Smith, Norman J. Steinert, Didier Swingedouw, Matteo Willeit, Wilbert Weijer, Richard Wood, Klaus Wyser, and Shuting Yang
EGUsphere, https://doi.org/10.5194/egusphere-2025-1899, https://doi.org/10.5194/egusphere-2025-1899, 2025
This preprint is open for discussion and under review for Earth System Dynamics (ESD).
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The Tipping Points Modelling Intercomparison Project (TIPMIP) is an international collaborative effort to systematically assess tipping point risks in the Earth system using state-of-the-art coupled and stand-alone domain models. TIPMIP will provide a first global atlas of potential tipping dynamics, respective critical thresholds and key uncertainties, generating an important building block towards a comprehensive scientific basis for policy- and decision-making.
Sergio Pérez-Montero, Jorge Alvarez-Solas, Jan Swierczek-Jereczek, Daniel Moreno-Parada, Alexander Robinson, and Marisa Montoya
EGUsphere, https://doi.org/10.5194/egusphere-2025-2467, https://doi.org/10.5194/egusphere-2025-2467, 2025
This preprint is open for discussion and under review for Climate of the Past (CP).
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Almost 3 million years ago, the planet began to experience a succession of cold and warm periods every 40,000 years. However, about 1 million years ago, they began to occur every 100,000 years. In this paper we explore how the change in the basal velocity of the ice sheets could have produced this change in behavior. On the other hand, we also see that in our model, decreasing in time the sensitivity of snowfall to temperature is also an effective mechanism with which to reproduce the records.
Katrina Lutz, Ilaria Tabone, Angelika Humbert, and Matthias Braun
EGUsphere, https://doi.org/10.5194/egusphere-2024-3056, https://doi.org/10.5194/egusphere-2024-3056, 2024
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Supraglacial lakes develop from meltwater collecting on the surface of glaciers. These lakes can drain rapidly, discharging meltwater to the glacier bed. In this study, we assess the spatial and temporal distribution of rapid drainages in Northeast Greenland using optical satellite images. After comparing rapid drainage occurrence with several environmental and geophysical parameters, little indication of the influencing conditions for a rapid drainage was found.
Antonio Juarez-Martinez, Javier Blasco, Alexander Robinson, Marisa Montoya, and Jorge Alvarez-Solas
The Cryosphere, 18, 4257–4283, https://doi.org/10.5194/tc-18-4257-2024, https://doi.org/10.5194/tc-18-4257-2024, 2024
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We present sea level projections for Antarctica in the context of ISMIP6-2300 with several forcings but extend the simulations to 2500, showing that more than 3 m of sea level contribution could be reached. We also test the sensitivity on a basal melting parameter and determine the timing of the loss of ice in the west region. All the simulations were carried out with the ice sheet model Yelmo.
Therese Rieckh, Andreas Born, Alexander Robinson, Robert Law, and Gerrit Gülle
Geosci. Model Dev., 17, 6987–7000, https://doi.org/10.5194/gmd-17-6987-2024, https://doi.org/10.5194/gmd-17-6987-2024, 2024
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We present the open-source model ELSA, which simulates the internal age structure of large ice sheets. It creates layers of snow accumulation at fixed times during the simulation, which are used to model the internal stratification of the ice sheet. Together with reconstructed isochrones from radiostratigraphy data, ELSA can be used to assess ice sheet models and to improve their parameterization. ELSA can be used coupled to an ice sheet model or forced with its output.
Daniel Moreno-Parada, Alexander Robinson, Marisa Montoya, and Jorge Alvarez-Solas
The Cryosphere, 18, 4215–4232, https://doi.org/10.5194/tc-18-4215-2024, https://doi.org/10.5194/tc-18-4215-2024, 2024
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Our study tries to understand how the ice temperature evolves in a large mass as in the case of Antarctica. We found a relation that tells us the ice temperature at any point. These results are important because they also determine how the ice moves. In general, ice moves due to slow deformation (as if pouring honey from a jar). Nevertheless, in some regions the ice base warms enough and melts. The liquid water then serves as lubricant and the ice slides and its velocity increases rapidly.
Javier Blasco, Ilaria Tabone, Daniel Moreno-Parada, Alexander Robinson, Jorge Alvarez-Solas, Frank Pattyn, and Marisa Montoya
Clim. Past, 20, 1919–1938, https://doi.org/10.5194/cp-20-1919-2024, https://doi.org/10.5194/cp-20-1919-2024, 2024
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In this study, we assess Antarctic tipping points which may had been crossed during the mid-Pliocene Warm Period. For this, we use data from the PlioMIP2 ensemble. Additionally, we investigate various sources of uncertainty, like ice dynamics and bedrock configuration. Our research significantly enhances our comprehension of Antarctica's response to a warming climate, shedding light on potential future tipping points that may be surpassed.
Jan Swierczek-Jereczek, Marisa Montoya, Konstantin Latychev, Alexander Robinson, Jorge Alvarez-Solas, and Jerry Mitrovica
Geosci. Model Dev., 17, 5263–5290, https://doi.org/10.5194/gmd-17-5263-2024, https://doi.org/10.5194/gmd-17-5263-2024, 2024
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Ice sheets present a thickness of a few kilometres, leading to a vertical deformation of the crust of up to a kilometre. This process depends on properties of the solid Earth, which can be regionally very different. We propose a model that accounts for this often-ignored heterogeneity and run 100 000 simulation years in minutes. Thus, the evolution of ice sheets is modeled with better accuracy, which is critical for a good mitigation of climate change and, in particular, sea-level rise.
Daniel Moreno-Parada, Jorge Alvarez-Solas, Javier Blasco, Marisa Montoya, and Alexander Robinson
The Cryosphere, 17, 2139–2156, https://doi.org/10.5194/tc-17-2139-2023, https://doi.org/10.5194/tc-17-2139-2023, 2023
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We have reconstructed the Laurentide Ice Sheet, located in North America during the Last Glacial Maximum (21 000 years ago). The absence of direct measurements raises a number of uncertainties. Here we study the impact of different physical laws that describe the friction as the ice slides over its base. We found that the Laurentide Ice Sheet is closest to prior reconstructions when the basal friction takes into account whether the base is frozen or thawed during its motion.
Matteo Willeit, Andrey Ganopolski, Alexander Robinson, and Neil R. Edwards
Geosci. Model Dev., 15, 5905–5948, https://doi.org/10.5194/gmd-15-5905-2022, https://doi.org/10.5194/gmd-15-5905-2022, 2022
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In this paper we present the climate component of the newly developed fast Earth system model CLIMBER-X. It has a horizontal resolution of 5°x5° and is designed to simulate the evolution of the Earth system on temporal scales ranging from decades to >100 000 years. CLIMBER-X is available as open-source code and is expected to be a useful tool for studying past climate changes and for the investigation of the long-term future evolution of the climate.
Alexander Robinson, Daniel Goldberg, and William H. Lipscomb
The Cryosphere, 16, 689–709, https://doi.org/10.5194/tc-16-689-2022, https://doi.org/10.5194/tc-16-689-2022, 2022
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Here we investigate the numerical stability of several commonly used methods in order to determine which of them are capable of resolving the complex physics of the ice flow and are also computationally efficient. We find that the so-called DIVA solver outperforms the others. Its representation of the physics is consistent with more complex methods, while it remains computationally efficient at high resolution.
Andreas Born and Alexander Robinson
The Cryosphere, 15, 4539–4556, https://doi.org/10.5194/tc-15-4539-2021, https://doi.org/10.5194/tc-15-4539-2021, 2021
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Ice penetrating radar reflections from the Greenland ice sheet are the best available record of past accumulation and how these layers have been deformed over time by the flow of ice. Direct simulations of this archive hold great promise for improving our models and for uncovering details of ice sheet dynamics that neither models nor data could achieve alone. We present the first three-dimensional ice sheet model that explicitly simulates individual layers of accumulation and how they deform.
Javier Blasco, Jorge Alvarez-Solas, Alexander Robinson, and Marisa Montoya
The Cryosphere, 15, 215–231, https://doi.org/10.5194/tc-15-215-2021, https://doi.org/10.5194/tc-15-215-2021, 2021
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During the Last Glacial Maximum the Antarctic Ice Sheet was larger and more extended than at present. However, neither its exact position nor the total ice volume are well constrained. Here we investigate how the different climatic boundary conditions, as well as basal friction configurations, affect the size and extent of the Antarctic Ice Sheet and discuss its potential implications.
Alexander Robinson, Jorge Alvarez-Solas, Marisa Montoya, Heiko Goelzer, Ralf Greve, and Catherine Ritz
Geosci. Model Dev., 13, 2805–2823, https://doi.org/10.5194/gmd-13-2805-2020, https://doi.org/10.5194/gmd-13-2805-2020, 2020
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Here we describe Yelmo v1.0, an intuitive and state-of-the-art hybrid ice sheet model. The model design and physics are described, and benchmark simulations are provided to validate its performance. Yelmo is a versatile ice sheet model that can be applied to a wide variety of problems.
Jorge Alvarez-Solas, Marisa Montoya, and Alexander Robinson
Clim. Past Discuss., https://doi.org/10.5194/cp-2019-96, https://doi.org/10.5194/cp-2019-96, 2019
Publication in CP not foreseen
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Modelling the past abrupt climate changes often resorts to the use of freshwater flux (FWF) in the North Atlantic as an effective method to cause reorganizations of the Atlantic Meridional Overturning Circulation. This procedure has allowed to reproduce the timing of the events. However, the required FWF is inconsistent with reconstructions. Conversely, using a forcing derived from the sea-level record results in a poor fit with the data, highlighting the need of exploring other mechanisms.
Ilaria Tabone, Alexander Robinson, Jorge Alvarez-Solas, and Marisa Montoya
The Cryosphere, 13, 1911–1923, https://doi.org/10.5194/tc-13-1911-2019, https://doi.org/10.5194/tc-13-1911-2019, 2019
Short summary
Short summary
Recent reconstructions show that the North East Greenland Ice Stream (NEGIS) retreated away from its present-day position by 20–40 km during MIS-3. Atmospheric and external forcings were proposed as potential causes of this retreat, but the role of the ocean was not considered. Here, using a 3-D ice-sheet model, we suggest that oceanic warming is sufficient to induce a retreat of the NEGIS margin of many tens of kilometres during MIS-3, helping to explain this conundrum.
Jorge Alvarez-Solas, Rubén Banderas, Alexander Robinson, and Marisa Montoya
Clim. Past, 15, 957–979, https://doi.org/10.5194/cp-15-957-2019, https://doi.org/10.5194/cp-15-957-2019, 2019
Short summary
Short summary
The last glacial period was marked by the existence of of abrupt climatic changes; it is generally accepted that the presence of ice sheets played an important role in their occurrence. While an important effort has been made to investigate the dynamics and evolution of the Laurentide ice sheet during this period, the Eurasian ice sheet (EIS) has not received much attention. Here we investigate the response of the EIS to millennial-scale climate variability using a hybrid 3-D ice-sheet model.
Javier Blasco, Ilaria Tabone, Jorge Alvarez-Solas, Alexander Robinson, and Marisa Montoya
Clim. Past, 15, 121–133, https://doi.org/10.5194/cp-15-121-2019, https://doi.org/10.5194/cp-15-121-2019, 2019
Short summary
Short summary
The LGP is a period punctuated by the presence of several abrupt climate events and sea-level variations of up to 20 m at millennial timescales. The origin of those fluctuations is attributed to NH paleo ice sheets, but a contribution from the AIS cannot be excluded. Here, for the first time, we investigate the response of the AIS to millennial climate variability using an ice sheet–shelf model. We shows that the AIS produces substantial sea-level rises and grounding line migrations.
Rubén Banderas, Jorge Alvarez-Solas, Alexander Robinson, and Marisa Montoya
Geosci. Model Dev., 11, 2299–2314, https://doi.org/10.5194/gmd-11-2299-2018, https://doi.org/10.5194/gmd-11-2299-2018, 2018
Short summary
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Here we present a new approach to force ice-sheet models offline, which accounts for a more realistic treatment of millennial-scale climate variability as compared to the existing methods. Our results reveal that an incorrect representation of the characteristic pattern of millennial-scale climate variability within the climate forcing not only affects NH ice-volume variations at millennial timescales but has consequences for glacial–interglacial ice-volume changes too.
Ilaria Tabone, Javier Blasco, Alexander Robinson, Jorge Alvarez-Solas, and Marisa Montoya
Clim. Past, 14, 455–472, https://doi.org/10.5194/cp-14-455-2018, https://doi.org/10.5194/cp-14-455-2018, 2018
Short summary
Short summary
The response of the Greenland Ice Sheet (GrIS) to palaeo-oceanic changes on a glacial–interglacial timescale is studied from a modelling perspective. A 3-D hybrid ice-sheet–shelf model which includes a parameterization of the basal melting rate at the GrIS marine margins is used. The results show that the oceanic forcing plays a key role in the GrIS evolution, not only by controlling the ice retreat during the deglaciation but also by driving the ice expansion in glacial periods.
Jorge Alvarez-Solas, Rubén Banderas, Alexander Robinson, and Marisa Montoya
Clim. Past Discuss., https://doi.org/10.5194/cp-2017-143, https://doi.org/10.5194/cp-2017-143, 2017
Revised manuscript not accepted
Short summary
Short summary
The last glacial period was marked by the existence of of abrupt climatic changes. It is generally accepted that the presence of ice sheets played an
important role in their occurrence. While an important effort has been made to investigate the dynamics and evolution of the Laurentide Ice Sheet during this period, the Eurasian Ice Sheet (EIS) has not received much attention. Here we investigate the response of the EIS to millennial-scale climate variability. We use a hybrid 3D ice-sheet model.
Mario Krapp, Alexander Robinson, and Andrey Ganopolski
The Cryosphere, 11, 1519–1535, https://doi.org/10.5194/tc-11-1519-2017, https://doi.org/10.5194/tc-11-1519-2017, 2017
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We present the snowpack model SEMIC. It calculates snow height, surface temperature, surface albedo, and the surface mass balance of snow- and ice-covered surfaces while using meteorological data as input. In this paper we describe how SEMIC works and how well it compares with snowpack data of a more sophisticated regional climate model applied to the Greenland ice sheet. Because of its simplicity and efficiency, SEMIC can be used as a coupling interface between atmospheric and ice sheet models.
A. Robinson and M. Perrette
Geosci. Model Dev., 8, 1877–1883, https://doi.org/10.5194/gmd-8-1877-2015, https://doi.org/10.5194/gmd-8-1877-2015, 2015
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Here we present a concise interface to the NetCDF library designed to simplify reading and writing tasks of up to 6-D arrays in Fortran programs.
R. Calov, A. Robinson, M. Perrette, and A. Ganopolski
The Cryosphere, 9, 179–196, https://doi.org/10.5194/tc-9-179-2015, https://doi.org/10.5194/tc-9-179-2015, 2015
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Ice discharge into the ocean from outlet glaciers is an important
component of mass loss of the Greenland ice sheet. Here, we present a
simple parameterization of ice discharge for coarse resolution ice
sheet models, suitable for large ensembles or long-term palaeo
simulations. This parameterization reproduces in a good approximation
the present-day ice discharge compared with estimates, and the
simulation of the present-day ice sheet elevation is considerably
improved.
A. Robinson and H. Goelzer
The Cryosphere, 8, 1419–1428, https://doi.org/10.5194/tc-8-1419-2014, https://doi.org/10.5194/tc-8-1419-2014, 2014
Related subject area
Subject: Ice Dynamics | Archive: Modelling only | Timescale: Millenial/D-O
The comparative role of physical system processes in Hudson Strait ice stream cycling: a comprehensive model-based test of Heinrich event hypotheses
Sensitivity of Heinrich-type ice-sheet surge characteristics to boundary forcing perturbations
Ocean-driven millennial-scale variability of the Eurasian ice sheet during the last glacial period simulated with a hybrid ice-sheet–shelf model
The Antarctic Ice Sheet response to glacial millennial-scale variability
The role of basal hydrology in the surging of the Laurentide Ice Sheet
Kevin Hank and Lev Tarasov
Clim. Past, 20, 2499–2524, https://doi.org/10.5194/cp-20-2499-2024, https://doi.org/10.5194/cp-20-2499-2024, 2024
Short summary
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The ice-rafted debris signature of Heinrich events in marine sedimentary cores is usually attributed to massive ice discharge from the Laurentide Ice Sheet. However, the driving mechanism of this pulsed discharge remains unclear. We compare three previously proposed hypotheses and examine the role of relevant system processes. We find ice stream surge cycling is the most likely mechanism, but its character is sensitive to both the geothermal heat flux and the form of the basal drag law.
Clemens Schannwell, Uwe Mikolajewicz, Florian Ziemen, and Marie-Luise Kapsch
Clim. Past, 19, 179–198, https://doi.org/10.5194/cp-19-179-2023, https://doi.org/10.5194/cp-19-179-2023, 2023
Short summary
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Heinrich-type ice-sheet surges are recurring events over the course of the last glacial cycle during which large numbers of icebergs are discharged from the Laurentide ice sheet into the ocean. These events alter the evolution of the global climate. Here, we use model simulations of the Laurentide ice sheet to identify and quantify the importance of various climate and ice-sheet parameters for the simulated surge cycle.
Jorge Alvarez-Solas, Rubén Banderas, Alexander Robinson, and Marisa Montoya
Clim. Past, 15, 957–979, https://doi.org/10.5194/cp-15-957-2019, https://doi.org/10.5194/cp-15-957-2019, 2019
Short summary
Short summary
The last glacial period was marked by the existence of of abrupt climatic changes; it is generally accepted that the presence of ice sheets played an important role in their occurrence. While an important effort has been made to investigate the dynamics and evolution of the Laurentide ice sheet during this period, the Eurasian ice sheet (EIS) has not received much attention. Here we investigate the response of the EIS to millennial-scale climate variability using a hybrid 3-D ice-sheet model.
Javier Blasco, Ilaria Tabone, Jorge Alvarez-Solas, Alexander Robinson, and Marisa Montoya
Clim. Past, 15, 121–133, https://doi.org/10.5194/cp-15-121-2019, https://doi.org/10.5194/cp-15-121-2019, 2019
Short summary
Short summary
The LGP is a period punctuated by the presence of several abrupt climate events and sea-level variations of up to 20 m at millennial timescales. The origin of those fluctuations is attributed to NH paleo ice sheets, but a contribution from the AIS cannot be excluded. Here, for the first time, we investigate the response of the AIS to millennial climate variability using an ice sheet–shelf model. We shows that the AIS produces substantial sea-level rises and grounding line migrations.
William H. G. Roberts, Antony J. Payne, and Paul J. Valdes
Clim. Past, 12, 1601–1617, https://doi.org/10.5194/cp-12-1601-2016, https://doi.org/10.5194/cp-12-1601-2016, 2016
Short summary
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There are observations from ocean sediment cores that during the last ice age the Laurentide Ice Sheet, which sat over North America, periodically surged. In this study we show the role that water at the base of an ice sheet plays in these surges. We show that with a more realistic representation of water drainage at the base of the ice sheet than usually used, these surges can still occur and that they are triggered by an internal ice sheet instability; no external trigger is needed.
Cited articles
Alley, R., Anandakrishnan, S., and Jung, P.: Stochastic resonance in the
North
Atlantic, Paleoceanogr. Paleocl., 16, 190–198, 2001. a
Alvarez-Solas, J., Charbit, S., Ritz, C., Paillard, D., Ramstein, G., and
Dumas, C.: Links between ocean temperature and iceberg discharge during
Heinrich events, Nat. Geosci., 3, 122–126, 2010. a
Alvarez-Solas, J., Robinson, A., Montoya, M., and Ritz, C.: Iceberg
discharges
of the last glacial period driven by oceanic circulation changes, P. Natl. Acad. Sci. USA, 110,
41, 16350–16354, 2013. a
Alvarez-Solas, J., Banderas, R., Robinson, A., and Montoya, M.: Oceanic
forcing of the Eurasian Ice Sheet on millennial time scales during the Last
Glacial Period, Clim. Past Discuss., https://doi.org/10.5194/cp-2018-89, in
review, 2018. a, b, c
Andrews, J. T., Barber, D., Jennings, A., Eberl, D., Maclean, B., Kirby, M.,
and Stoner, J.: Varying sediment sources (Hudson Strait, Cumberland Sound,
Baffin Bay) to the NW Labrador Sea slope between and during Heinrich events 0
to 4, J. Quaternary Sci., 27, 475–484, 2012. a
Anklin, M., Barnola, J. M., Beer, J., Blunier, T.,
Chappellaz, J., Clausen, H. B., Dahl-Jensen, D., Dansgaard, W., De Angelis, M., Delmas, R. J., Duval, P.,
Fratta, M., Fuchs, A., Fuhrer, K., Gundestrup, N., Hammer, C., Iversen P., Johnsen, S., Jouzel, J., Kipfstuhl,
J., Legrand, M., Lorius, C., Maggi, V., Miller, H., Moore, J. C., Oeschger, H., Orombelli, G., Peel, D. A.,
Raisbeck, G., Raynaud, D., Schott-Hvidberg, C., Schwander, J., Shoji, H., Souchez, R., Stauffer, B.,
Steffensen, J. P., Stievenard, M., Sveinbjornsdottir, A., Thorsteinsson, T., and Wolff, E. W.: Climate
instability during the last interglacial period recorded in the GRIP ice
core, Nature, 364, 203–207, 1993. a
Annan, J. D. and Hargreaves, J. C.: A new global reconstruction of
temperature changes at the Last Glacial Maximum, Clim. Past, 9, 367–376,
https://doi.org/10.5194/cp-9-367-2013, 2013. a
Applegate, P. J., Kirchner, N., Stone, E. J., Keller, K., and Greve, R.: An
assessment of key model parametric uncertainties in projections of Greenland
Ice Sheet behavior, The Cryosphere, 6, 589–606,
https://doi.org/10.5194/tc-6-589-2012, 2012. a
Bagniewski, W., Meissner, K. J., and Menviel, L.: Exploring the oxygen
isotope
fingerprint of Dansgaard-Oeschger variability and Heinrich events, Quaternary
Sci. Rev., 159, 1–14, 2017. a
Banderas, R., Alvarez-Solas, J., Robinson, A., and Montoya, M.: An
interhemispheric mechanism for glacial abrupt climate change, Clim.
Dynam., 44, 2897–2908, 2015. a
Banderas, R., Alvarez-Solas, J., Robinson, A., and Montoya, M.: A new
approach
for simulating the paleo-evolution of the Northern Hemisphere ice sheets,
Geosci. Model Dev., 11, 2299–2314,
https://doi.org/10.5194/gmd-11-2299-2018, 2018. a
Bassis, J. N., Petersen, S. V., and Mac Cathles, L.: Heinrich events
triggered
by ocean forcing and modulated by isostatic adjustment, Nature, 542, 332–334,
2017. a
Bauer, E. and Ganopolski, A.: Comparison of surface mass balance of ice
sheets simulated by positive-degree-day method and energy balance approach,
Clim. Past, 13, 819–832, https://doi.org/10.5194/cp-13-819-2017, 2017. a
Bintanja, R. and Van de Wal, R.: North American ice-sheet dynamics and the
onset of 100,000-year glacial cycles, Nature, 454, 869–872, 2008. a
Blasco, J., Tabone, I., Alvarez-Solas, J., Robinson, A., and Montoya, M.: The
Antarctic Ice Sheet response to glacial millennial-scale variability, Clim.
Past, 15, 121–133, https://doi.org/10.5194/cp-15-121-2019, 2019. a, b, c
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. a, b
Böhm, E., Lippold, J., Gutjahr, M., Frank, M., Blaser, P., Antz, B.,
Fohlmeister, J., Frank, N., Andersen, M., and Deininger, M.: Strong and deep
Atlantic meridional overturning circulation during the last glacial cycle,
Nature, 517, 73–76, 2015. a
Bond, G., Broecker, W., Johnsen, S., McManus, J., Labeyrie, L., Jouzel, J.,
and
Bonani, G.: Correlations between climate records from North Atlantic
sediments and Greenland ice, Nature, 365, 143–147, 1993. a
Charbit, S., Ritz, C., Philippon, G., Peyaud, V., and Kageyama, M.: Numerical
reconstructions of the Northern Hemisphere ice sheets through the last
glacial-interglacial cycle, Clim. Past, 3, 15–37,
https://doi.org/10.5194/cp-3-15-2007, 2007. a
Colleoni, F., Masina, S., Cherchi, A., Navarra, A., Ritz, C., Peyaud, V., and
Otto-Bliesner, B.: Modeling Northern Hemisphere ice-sheet distribution during
MIS 5 and MIS 7 glacial inceptions, Clim. Past, 10, 269–291,
https://doi.org/10.5194/cp-10-269-2014, 2014. a
Dansgaard, W., Johnsen, S., Clausen, H., Dahl-Jensen, D., Gundestrup, N., Hammer, C., Hvidberg, C., Steffensen, J., Sveinbjörnsdottir, A., Jouzel, J., and
Bond, G.: Evidence for general instability of past climate from a 250-kyr
ice-core record, Nature, 364, 218–220, 1993. a
Darby, D. A., Bischof, J. F., Spielhagen, R. F., Marshall, S. A., and Herman,
S. W.: Arctic ice export events and their potential impact on global climate
during the late Pleistocene, Paleoceanography, 17, 15-1–15-17, 2002. a
Dokken, T. M. and Jansen, E.: Rapid changes in the mechanism of ocean
convection during the last glacial period, Nature, 401, 458–461, 1999. a
Fettweis, X., Franco, B., Tedesco, M., Van Angelen, J., Lenaerts, J., Van den
Broeke, M., and Gallée, H.: Estimating Greenland ice sheet surface mass
balance contribution to future sea level rise using the regional atmospheric
climate model MAR, The Cryosphere, 7, 469–489, https://doi.org/10.5194/tc-7-469-2013,
2013. a
Fleitmann, D., Cheng, H., Badertscher, S., Edwards, R., Mudelsee, M.,
Göktürk, O. M., Fankhauser, A., Pickering, R., Raible, C., Matter,
A., Kramers, J., and Tüysüz, O.: Timing and climatic impact of
Greenland interstadials recorded in
stalagmites from northern Turkey, Geophys. Res. Lett., 36, L19707, https://doi.org/10.1029/2009GL040050, 2009. a
Gladstone, R. M., Payne, A. J., and Cornford, S. L.: Parameterising the
grounding line in flow-line ice sheet models, The Cryosphere, 4, 605–619,
https://doi.org/10.5194/tc-4-605-2010, 2010. a
Gladstone, R. M., Lee, V., Rougier, J., Payne, A. J., Hellmer, H., Le Brocq,
A., Shepherd, A., Edwards, T. L., Gregory, J., and Cornford, S. L.:
Calibrated prediction of Pine Island Glacier retreat during the 21st and 22nd
centuries with a coupled flowline model, Earth Planet. Sc. Lett.,
333, 191–199, 2012. a
Gottschalk, J., Skinner, L. C., Misra, S., Waelbroeck, C., Menviel, L., and
Timmermann, A.: Abrupt changes in the southern extent of North Atlantic Deep
Water during Dansgaard–Oeschger events, Nat. Geosci., 8, 950–954, 2015. a
Grootes, P. M., Stuiver, M., White, J., Johnsen, S., and Jouzel, J.:
Comparison
of oxygen isotope records from the GISP2 and GRIP Greenland ice cores,
Nature, 366, 552–554, 1993. a
Henry, L., 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, 2016. a
Hoff, U., Rasmussen, T. L., Stein, R., Ezat, M. M., and Fahl, K.: Sea ice and
millennial-scale climate variability in the Nordic seas 90 kyr ago to
present, Nat. Commun., 7, 12247, https://doi.org/10.1038/ncomms12247, 2016. a, b
Holland, P. R., Jenkins, A., and Holland, D. M.: The response of ice shelf
basal melting to variations in ocean temperature, J. Clim., 21,
2558–2572, 2008. a
Hutter, K.: Theoretical Glaciology: Material Science of Ice and the Mechanics
of Glaciers and Ice Sheets (Mathematical Approaches to Geophysics), edited by: Reidel,
D.,
Dordrecht, the Netherlands, 1983. a
Huybrechts, P.: Sea-level changes at the LGM from ice-dynamic
reconstructions
of the Greenland and Antarctic ice sheets during the glacial cycles,
Quaternary Sci. Rev., 21, 203–231, https://doi.org/10.1016/S0277-3791(01)00082-8, 2002. a
Jenkins, A.: Convection-driven melting near the grounding line of ice shelves
and tidewater glaciers, J. Phys. Oceanogr., 41, 2279–2294,
https://doi.org/10.1175/JPO-D-11-03.1, 2011. a
Jennings, A. E., Andrews, J. T., Cofaigh, C. Ó., Onge, G. S., Sheldon,
C.,
Belt, S. T., Cabedo-Sanz, P., and Hillaire-Marcel, C.: Ocean forcing of Ice
Sheet retreat in central west Greenland from LGM to the early Holocene, Earth
Planet. Sc. Lett., 472, 1–13, 2017. a
Jensen, M. F., Nummelin, A., Nielsen, S. B., Sadatzki, H., Sessford, E.,
Risebrobakken, B., Andersson, C., Voelker, A., Roberts, W. H. G., Pedro, J.,
and Born, A.: A spatiotemporal reconstruction of sea-surface temperatures in
the North Atlantic during Dansgaard–Oeschger events 5–8, Clim.
Past, 14, 901–922, https://doi.org/10.5194/cp-14-901-2018, 2018. a, b, c
Johnsen, S. J., Clausen, H. B., Dansgaard, W., Fuhrer, K., Gundestrup,
N.and Hammer, C. U. I. P., Jouzel, J., Stauffer, B., and Steffensen, J. P.:
Irregular glacial interstadials recorded in a new Greenland ice core, Nature,
359, 311–313, 1992. a
Johnsen, S. J., Dahl-Jensen, D., Gundestrup, N., Steffensen, J. P., Clausen,
H. B., Miller, H., Masson-Delmotte, V., Sveinbjörnsdottir, A. E., and
White, J.: Oxygen isotope and palaeotemperature records from six Greenland
ice-core stations: Camp Century, Dye-3, GRIP, GISP2, Renland and NorthGRIP,
J. Quaternary Sci., 16, 299–307, 2001. a
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,
2014. a, b
Knutti, R., Flückiger, J., Stocker, T., and Timmermann, A.: Strong
hemispheric coupling of glacial climate through freshwater discharge and
ocean circulation, Nature, 430, 851–856, 2004. a
Larsen, N. K., Levy, L. B., Carlson, A. E., Buizert, C., Olsen, J., Strunk,
A.,
Bjørk, A. A., and Skov, D. S.: Instability of the Northeast Greenland Ice
Stream over the last 45,000 years, Nat. Commun., 9, 1872, https://doi.org/10.1038/s41467-018-04312-7, 2018. a
Le Meur, E. and Huybrechts, P.: A comparison of different ways of dealing
with
isostasy: examples from modelling the Antarctic ice sheet during the last
glacial cycle, Ann. Glaciol., 23, 309–317, 1996. a
Li, C., Battisti, D. S., Schrag, D. P., and Tziperman, E.: Abrupt climate
shifts in Greenland due to displacements of the sea ice edge, Geophys.
Res. Lett., 32, L19702, https://doi.org/10.1029/2005GL023492, 2005. a
Little, C. M., Goldberg, D., Gnanadesikan, A., and Oppenheimer, M.: On the
coupled response to ice-shelf basal melting, J. Glaciol., 58,
203–215, 2012. a
Liu, Y., Moore, J. C., Cheng, X., Gladstone, R. M., Bassis, J. N., Liu, H.,
Wen, J., and Hui, F.: Ocean-driven thinning enhances iceberg calving and
retreat of Antarctic ice shelves, P. Natl. Acad.
Sci. USA, 112, 3263–3268, 2015. a
Lynch-Stieglitz, J.: The Atlantic meridional overturning circulation and
abrupt
climate change, Ann. Rev. Mar. Sci., 9, 83–104, 2017. a
Marcott, S. A., Clark, P. U., Padman, L.,
Klinkhammer, G. P., Springer, S. R., Liu, Z., Otto-Bliesner, B. L., Carlson, A. E., Ungerer, A., Padman, J.,
Feng , H., Cheng, J., and Schmittner A.: Ice-shelf collapse from subsurface warming as a trigger for Heinrich
events, P. Natl. Acad. Sci. USA, 108,
13415–13419, 2011. a, b
Margo, P. M.: Constraints on the magnitude and patterns of ocean cooling at
the
Last Glacial Maximum, Nat. Geosci., 2, 127–132, https://doi.org/10.1038/ngeo411,
2009. a
Marshall, S. J. and Koutnik, M. R.: Ice sheet action versus reaction:
Distinguishing between Heinrich events and Dansgaard-Oeschger cycles in the
North Atlantic, Paleoceanography, 21, PA2021, https://doi.org/10.1029/2005PA001247, 2006. a
McKay, M. D., Beckman, R. J., and Conover, W. J.: Comparison of three methods
for selecting values of input variables in the analysis of output from a
computer code, Technometrics, 21, 239–245, 1979. a
Menviel, L., Timmermann, A., Friedrich, T., and England, M. H.: Hindcasting
the continuum of Dansgaard–Oeschger variability: mechanisms, patterns and
timing, Clim. Past, 10, 63–77, https://doi.org/10.5194/cp-10-63-2014, 2014. a
Mignot, J., Ganopolski, A., and Levermann, A.: Atlantic subsurface
temperatures: Response to a shutdown of the overturning circulation and
consequences for its recovery, J. Clim., 20, 4884–4898, 2007. a
Montoya, M. and Levermann, A.: Surface wind-stress threshold for glacial
Atlantic overturning, Geophys. Res. Lett., 35, L03608,
https://doi.org/10.1029/2007GL032560, 2008. a
Morland, L., Van der Veen, C., and Oerlemans, J.:
Dynamics of the West Antarctic ice sheet., Proc. Workshop on the Dynamics of the West Antarctic Ice Sheet,
edited by: Reidel, D., Dordrecht, the Netherlands, 99–116, 1987. a
Münchow, A., Padman, L., and Fricker, H. A.: Interannual changes of the
floating ice shelf of Petermann Gletscher, North Greenland, from 2000 to
2012, J. Glaciol., 60, 489–499, 2014. a
Petersen, S. V., Schrag, D. P., and Clark, P. U.: A new mechanism for
Dansgaard-Oeschger cycles, Paleoceanography, 28, 24–30, 2013. a
Peyaud, V., Ritz, C., and Krinner, G.: Modelling the Early Weichselian
Eurasian Ice Sheets: role of ice shelves and influence of ice-dammed lakes,
Clim. Past, 3, 375–386, https://doi.org/10.5194/cp-3-375-2007, 2007. a
Rasmussen, S. O., Bigler, M., Blockley, S. P.,
Blunier, T., Buchardt, S. L., Clausen, H. B., Cvijanovic, I., Dahl-Jensen, D., Johnsen, S. J., Fischer, H.,
Gkinis, V., Guillevic , M., Hoek, W., Lowe, J., Pedro, J., Popp, T., Seierstad, I., Steffensen, J. P., Svensson
A. M., Vallelonga, P., Vinther, B., Walker, M., Wheatley, J. J., and Winstrup, M.: A stratigraphic framework for abrupt climatic changes during the Last
Glacial period based on three synchronized Greenland ice-core records:
refining and extending the INTIMATE event stratigraphy, Quaternary Sci.
Rev., 106, 14–28, 2014. a
Rasmussen, T. L., Thomsen, E., Labeyrie, L., and van Weering, T. C.:
Circulation changes in the Faeroe-Shetland Channel correlating with cold
events during the last glacial period (58–10 ka), Geology, 24, 937–940,
1996. a
Reeh, N.: Parameterization of melt rate and surface temperature on the
Greenland ice sheet, Polarforschung, 59, 113–128, 1989. a
Reese, R., Albrecht, T., Mengel, M., Asay-Davis, X., and Winkelmann, R.:
Antarctic sub-shelf melt rates via PICO, The Cryosphere, 12, 1969–1985,
https://doi.org/10.5194/tc-12-1969-2018, 2018. a
Rignot, E. and Jacobs, S. S.: Rapid bottom melting widespread near Antarctic
Ice Sheet grounding lines, Science, 296, 2020–2023,
https://doi.org/10.1126/science.1070942, 2002. a
Rignot, E. and Steffen, K.: Channelized bottom melting and stability of
floating ice shelves, Geophys. Res. Lett., 35, L02503, https://doi.org/10.1029/2007GL031765, 2008. a
Rignot, E., Koppes, M., and Velicogna, I.: Rapid submarine melting of the
calving faces of West Greenland glaciers, Nat. Geosci., 3, 187–191,
https://doi.org/10.1038/ngeo765, 2010. a
Rignot, E., Jacobs, S., Mouginot, J., and Scheuchl, B.: Ice-shelf melting
around Antarctica, Science, 341, 266–270,
https://doi.org/10.1126/science.1235798, 2013. a, b, c
Rignot, E., Xu, Y., Menemenlis, D., Mouginot, J., Scheuchl, B., Li, X.,
Morlighem, M., Seroussi, H., Broeke, M. v., Fenty, I., Cai, C., An, L., and
de Fleurian, B.: Modeling of ocean-induced ice melt rates of five west
Greenland glaciers over the past two decades, Geophys. Res. Lett., 43,
6374–6382, https://doi.org/10.1002/2016GL068784, 2016. a
Ritz, C., Rommelaere, V., and Dumas, C.: Modeling the evolution of Antarctic
Ice Sheet over the last 420,000 years. Implications for altitude changes in
the Vostok region, J. Geophys. Res., 106, 31943–31964,
https://doi.org/10.1029/2001JD900232, 2001. a
Robinson, A. and Goelzer, H.: The importance of insolation changes for paleo
ice sheet modeling, Geophys. Res. Lett., 8, 1419–1428, 2014. a
Robinson, A., Alvarez-Solas, J., Calov, R., Ganopolski, A., and Montoya, M.:
MIS-11 duration key to disappearance of the Greenland ice sheet, Nat.
Commun., 8, 16008, https://doi.org/10.1038/ncomms16008, 2017. a
Rohatgi, A.: WebPlotDigitizer Version: 4.1, available at: https://apps.automeris.io/wpd/, last
access:
January, 2018.
Ruddiman, W. F.: Late Quaternary deposition of ice-rafted sand in the
subpolar
North Atlantic (lat 40 to 65∘ N), Geol. Soc. Am. Bull., 88,
1813–1827, 1977. a
Schaffer, J., Timmermann, R., Arndt, J. E., Kristensen, S. S., Mayer, C.,
Morlighem, M., and Steinhage, D.: A global, high-resolution data set of ice
sheet topography, cavity geometry, and ocean bathymetry, Earth Syst. Sci.
Data, 8, 543–557, https://doi.org/10.5194/essd-8-543-2016, 2016. a
Sévellec, F. and Fedorov, A. V.: Unstable AMOC during glacial intervals
and
millennial variability: The role of mean sea ice extent, Earth Planet.
Sc. Lett., 429, 60–68, 2015. a
Shackleton, N. J., Hall, M. A., and Vincent, E.: Phase relationships between
millennial-scale events 64,000–24,000 years ago, Paleoceanography, 15,
565–569, 2000. a
Shaffer, G., Olsen, S. M., and Bjerrum, C. J.: Ocean subsurface warming as a
mechanism for coupling Dansgaard-Oeschger climate cycles and ice-rafting
events, Geophys. Res. Lett., 31, L24202, https://doi.org/10.1029/2004GL020968, 2004. a
Shapiro, N. M. and Ritzwoller, M. H.: Inferring surface heat flux
distributions
guided by a global seismic model: particular application to Antarctica, Earth
Planet. Sc. Lett., 223, 213–224, https://doi.org/10.1016/j.epsl.2004.04.011, 2004. a
Sime, L., Hopcroft, P., and Rhodes, R.: Impact of abrupt sea ice loss on
Greenland water isotopes during the last glacial period, P. Natl. Acad. Sci.
USA, 116,
4099–4104,
https://doi.org/10.1073/pnas.1807261116, 2019. a, b
Skinner, L. and Elderfield, H.: Rapid fluctuations in the deep North Atlantic
heat budget during the last glacial period, Paleoceanography, 22, PA1205, https://doi.org/10.1029/2006PA001338, 2007. a
Stein, R., Nam, S.-i., Grobe, H., and Hubberten, H.: Late Quaternary glacial
history and short-term ice-rafted debris fluctuations along the East
Greenland continental margin, Geol. Soc. Lond. Spec.
Publ., 111, 135–151, 1996. a
Stone, E., Lunt, D., Annan, J., and Hargreaves, J.: Quantification of the
Greenland ice sheet contribution to Last Interglacial sea level rise, Clim.
Past, 9, 621–639, https://doi.org/10.5194/cp-9-621-2013, 2013. a
Stone, E. J., Lunt, D. J., Rutt, I. C., and Hanna, E.: Investigating the
sensitivity of numerical model simulations of the modern state of the
Greenland ice-sheet and its future response to climate change, The
Cryosphere, 4, 397–417, https://doi.org/10.5194/tc-4-397-2010, 2010. a
Straneo, F., Sutherland, D. A., Holland, D., Gladish, C., Hamilton, G. S.,
Johnson, H. L., Rignot, E., Xu, Y., and Koppes, M.: Characteristics of ocean
waters reaching Greenland's glaciers, Ann. Glaciol., 53, 202–210,
https://doi.org/10.3189/2012AoG60A059, 2012. a
Vasskog, K., Langebroek, P. M., Andrews, J. T., Nilsen, J. E., and Nesje, A.:
The Greenland Ice Sheet during the last glacial cycle: Current ice loss and
contribution to sea-level rise from a palaeoclimatic perspective, Geophys.
Res. Lett., 43, 5336–5344, 2015. a
Vellinga, M. and Wood, R. A.: Global climatic impacts of a collapse of the
Atlantic thermohaline circulation, Climatic Change, 54, 251–267, 2002. a
Verplanck, E. P., Farmer, G. L., Andrews, J., Dunhill, G., and Millo, C.:
Provenance of Quaternary glacial and glacimarine sediments along the
southeast Greenland margin, Earth Planet. Sc. Lett., 286, 52–62,
2009. a
Voelker, A. H.: Instability of the Atlantic overturning circulation during
Marine Isotope Stage 3, Quaternary Sci. Rev., 21, 1185–1212, 2002. a
Wang, Y., Wu, J., Wu, J., Mu, X., Xu, H., and Chen, J.: Correlation between
high-resolution climate records from a Nanjing stalagmite and GRIP ice core
during the last glaciation, Sci. China Ser. D, 44,
14–23, 2001. a
Wang, Z., Zhang, X., Guan, Z., Sun, B., Yang, X., and Liu, C.: An atmospheric
origin of the multi-decadal bipolar seesaw, Sci. Rep., 5, 8909, https://doi.org/10.1038/srep08909,
2015. a
Wilson, N., Straneo, F., and Heimbach, P.: Satellite-derived submarine melt
rates and mass balance (2011–2015) for Greenland's largest remaining ice
tongues, The Cryosphere, 11, 2773–2782,
https://doi.org/10.5194/tc-11-2773-2017, 2017. a, b
Winkelmann, R., Martin, M. A., Haseloff, M., Albrecht, T., Bueler, E.,
Khroulev, C., and Levermann, A.: The Potsdam Parallel Ice Sheet Model
(PISM-PIK) – Part 1: Model description, The Cryosphere, 5, 715–726,
https://doi.org/10.5194/tc-5-715-2011, 2011. a
Wunsch, C.: Abrupt climate change: An alternative view, Quaternary Res.,
65, 191–203, 2006. a
Zhang, X., Lohmann, G., and Knorr, G.and Purcell, C.: Abrupt glacial climate
shifts controlled by ice sheet changes, Nature, 3512, 290–294,
2014a. a
Zhang, X., Prange, M., Merkel, U., and Schulz, M.:
Instability of the Atlantic overturning circulation during Marine Isotope Stage 3, Geophys. Res. Lett., 41,
4285–4293, https://doi.org/10.1002/2014GL060321, 2014a. a, b
Zhang, X., Knorr, G., Lohmann, G., and Barker, S.: Abrupt North Atlantic
circulation changes in response to gradual CO2 forcing in a glacial climate
state, Nat. Geosci., 10, 518–523, 2017. a
Short summary
By using a 3-D hybrid ice-sheet–shelf model, we investigate the impact of millennial-scale oceanic variability on the Greenland Ice Sheet (GrIS) evolution during the last glacial period (LGP). We show that the GrIS may have strongly reacted to oceanic temperature fluctuations associated with Dansgaard–Oeschger cycles, contributing to sea-level variations of more than 1 m. Our results open the chance for a non-negligible role of the GrIS in millennial-scale oceanic reorganisations during the LGP.
By using a 3-D hybrid ice-sheet–shelf model, we investigate the impact of millennial-scale...
