Eric J. Steig
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View article: Author Correction: The Ronne Ice Shelf survived the last interglacial
Author Correction: The Ronne Ice Shelf survived the last interglacial Open
International audience
View article: The Ronne Ice Shelf survived the last interglacial
The Ronne Ice Shelf survived the last interglacial Open
The fate of the West Antarctic Ice Sheet (WAIS) 1 is the largest cause of uncertainty in long-term sea-level projections. In the last interglacial (LIG) around 125,000 years ago, data suggest that sea level was several metres higher than t…
View article: Coupled Seasonal Data Assimilation of Sea Ice, Ocean, and Atmospheric Dynamics over the Last Millennium
Coupled Seasonal Data Assimilation of Sea Ice, Ocean, and Atmospheric Dynamics over the Last Millennium Open
``Online" data assimilation (DA) is used to generate a new seasonal-resolution reanalysis dataset over the last millennium by combining forecasts from an ocean--atmosphere--sea-ice coupled linear inverse model with climate proxy records. I…
View article: Antarctic climate response in Last Interglacial simulations using the Community Earth System Model (CESM2)
Antarctic climate response in Last Interglacial simulations using the Community Earth System Model (CESM2) Open
We examine results from two transient modeling experiments that simulate the Last Interglacial period (LIG) using the state-of-the-art Community Earth System Model (CESM2), with a focus on climate and ocean changes relevant to the possible…
View article: Plant, insect, and fungi fossils under the center of Greenland’s ice sheet are evidence of ice-free times
Plant, insect, and fungi fossils under the center of Greenland’s ice sheet are evidence of ice-free times Open
The persistence and size of the Greenland Ice Sheet (GrIS) through the Pleistocene is uncertain. This is important because reconstructing changes in the GrIS determines its contribution to sea level rise during prior warm climate periods a…
View article: Holocene climate variability – CORRIGENDUM
Holocene climate variability – CORRIGENDUM Open
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View article: Antarctic climate response in Last-Interglacial simulations using the Community Earth System Model (CESM2)
Antarctic climate response in Last-Interglacial simulations using the Community Earth System Model (CESM2) Open
We examine results from two transient modelling experiments that simulate the Last Interglacial period (LIG) using the state-of-the-art Community Earth System Model (CESM2), with a focus on climate and ocean changes relevant to the possibl…
View article: Understanding conditions leading to WAIS collapse, from the Last Interglacial to the modern
Understanding conditions leading to WAIS collapse, from the Last Interglacial to the modern Open
It is virtually certain that the West Antarctic Ice Sheet (WAIS) collapsed during past warm periods in Earth’s history, prompting concerns about the potential recurrence under anthropogenic climate change. Despite observed ice shelf …
View article: Development of a Continuous Flow Analysis system for studying Allan Hills, Antarctica ice cores
Development of a Continuous Flow Analysis system for studying Allan Hills, Antarctica ice cores Open
Extending ice core records beyond 800 thousand years (kyr) is a pivotal goal in paleoclimate research. Allan Hills, East Antarctica, provides a unique opportunity to evaluate old ice and reconstruct climate well beyond 800 kyr with prelimi…
View article: A global collection of paleoclimate proxy time series over the Common Era
A global collection of paleoclimate proxy time series over the Common Era Open
*Dec 2023 Proxy Database Update: This database has been updated based on a more stringent proxy screening procedure. All screening calculations and decisions are documented in the accompanying Julia code Pluto notebook file (see also the H…
View article: A global collection of paleoclimate proxy time series over the Common Era
A global collection of paleoclimate proxy time series over the Common Era Open
*Dec 2023 Proxy Database Update: This database has been updated based on a more stringent proxy screening procedure. All screening calculations and decisions are documented in the accompanying Julia code Pluto notebook file (see also the H…
View article: Characteristics and rarity of the strong 1940s westerly wind event over the Amundsen Sea, West Antarctica
Characteristics and rarity of the strong 1940s westerly wind event over the Amundsen Sea, West Antarctica Open
Glaciers in the Amundsen Sea Embayment of West Antarctica are rapidly retreating and contributing to sea level rise. Ice loss is occurring primarily via exposure to warm ocean water, which varies in response to local wind variability. Ther…
View article: Scars of tectonism promote ice-sheet nucleation from Hercules Dome into West Antarctica
Scars of tectonism promote ice-sheet nucleation from Hercules Dome into West Antarctica Open
Geology and bed topography influence how ice sheets respond to climate change. Despite the West Antarctic Ice Sheet’s capacity to retreat and advance quickly over its over-deepened interior, little is known about the subglacial landscape o…
View article: Response of water isotopes in precipitation to a collapse of the West Antarctic Ice Sheet in high-resolution simulations with the Weather Research and Forecasting Model
Response of water isotopes in precipitation to a collapse of the West Antarctic Ice Sheet in high-resolution simulations with the Weather Research and Forecasting Model Open
This archive includes data and ipython notebooks to create the figures for the manuscript "Response of water isotopes in precipitation to a collapse of the West Antarctic Ice Sheet in high-resolution simulations with the Weather Research a…
View article: Response of water isotopes in precipitation to a collapse of the West Antarctic Ice Sheet in high-resolution simulations with the Weather Research and Forecasting Model
Response of water isotopes in precipitation to a collapse of the West Antarctic Ice Sheet in high-resolution simulations with the Weather Research and Forecasting Model Open
This archive includes data and ipython notebooks to create the figures for the manuscript "Response of water isotopes in precipitation to a collapse of the West Antarctic Ice Sheet in high-resolution simulations with the Weather Research a…
View article: Deglaciation of northwestern Greenland during Marine Isotope Stage 11
Deglaciation of northwestern Greenland during Marine Isotope Stage 11 Open
Past interglacial climates with smaller ice sheets offer analogs for ice sheet response to future warming and contributions to sea level rise; however, well-dated geologic records from formerly ice-free areas are rare. Here we report that …
View article: 20th century winds, pressure, and temperature around Antarctica from single-proxy data assimilation
20th century winds, pressure, and temperature around Antarctica from single-proxy data assimilation Open
Please cite O'Connor et al., 2023 (preprint available in The Cryosphere Discussions) when using these single-proxy reconstruction datasets. The reconstructions generated using all proxy data (O'Connor et al., 2021) are archived here. This …
View article: 20th century winds, pressure, and temperature around Antarctica from single-proxy data assimilation
20th century winds, pressure, and temperature around Antarctica from single-proxy data assimilation Open
Please cite O'Connor et al., 2023 (preprint available in The Cryosphere Discussions) when using these single-proxy reconstruction datasets. The reconstructions generated using all proxy data (O'Connor et al., 2021) are archived here. This …
View article: Linearity of the Climate System Response to Raising and Lowering West Antarctic and Coastal Antarctic Topography
Linearity of the Climate System Response to Raising and Lowering West Antarctic and Coastal Antarctic Topography Open
A hierarchy of general circulation models (GCMs) is used to investigate the linearity of the response of the climate system to changes in Antarctic topography. Experiments were conducted with a GCM with either a slab ocean or fixed SSTs an…
View article: Response of Water Isotopes in Precipitation to a Collapse of the West Antarctic Ice Sheet in High-Resolution Simulations with the Weather Research and Forecasting Model
Response of Water Isotopes in Precipitation to a Collapse of the West Antarctic Ice Sheet in High-Resolution Simulations with the Weather Research and Forecasting Model Open
The West Antarctic Ice Sheet (WAIS) may have collapsed during the last interglacial period, between 132 000 and 116 000 years ago. The changes in topography resulting from WAIS collapse would be accompanied by significant changes in Antarc…
View article: Comment on tc-2023-16
Comment on tc-2023-16 Open
Abstract. Glaciers in the Amundsen Sea Embayment of West Antarctica are rapidly retreating and contributing to sea level rise. Ice loss is occurring primarily via exposure to warm ocean water, which varies in response to local wind variabi…
View article: Comment on tc-2023-16
Comment on tc-2023-16 Open
Abstract. Glaciers in the Amundsen Sea Embayment of West Antarctica are rapidly retreating and contributing to sea level rise. Ice loss is occurring primarily via exposure to warm ocean water, which varies in response to local wind variabi…
View article: Comment on tc-2023-16
Comment on tc-2023-16 Open
Abstract. Glaciers in the Amundsen Sea Embayment of West Antarctica are rapidly retreating and contributing to sea level rise. Ice loss is occurring primarily via exposure to warm ocean water, which varies in response to local wind variabi…
View article: Comment on cp-2022-95
Comment on cp-2022-95 Open
Abstract. Few ice cores from the Amundsen and Bellingshausen Sea sectors of the West Antarctic Ice Sheet (WAIS) extend back in time further than a few hundred years. The WAIS is believed to be susceptible to collapse as a result of anthrop…
View article: Drivers and rarity of the strong 1940s westerly wind event in the Amundsen Sea, West Antarctica
Drivers and rarity of the strong 1940s westerly wind event in the Amundsen Sea, West Antarctica Open
Ice loss in the Amundsen Sea Embayment is occurring primarily via exposure to warm ocean water, which varies in response to local wind variability. There is evidence that glacier retreat in this region was initiated in the mid-20th century…
View article: Drivers and rarity of the strong 1940s westerly wind event over the Amundsen Sea, West Antarctica
Drivers and rarity of the strong 1940s westerly wind event over the Amundsen Sea, West Antarctica Open
Glaciers in the Amundsen Sea Embayment of West Antarctica are rapidly retreating and contributing to sea level rise. Ice loss is occurring primarily via exposure to warm ocean water, which varies in response to local wind variability. Ther…