Results 71 to 80 of about 6,560 (235)

Community‐driven variations in snow algae color modulate snow albedo reduction

New Phytologist, Volume 249, Issue 4, Page 1739-1752, February 2026.
Summary Snow algae blooms visibly alter snow color and surface energy balance, yet the biological basis of this variability remains unclear. We investigated how pigment composition and community structure shape the optical properties of snow algae blooms of distinct colors – red, orange, and green – co‐occurring within the same snowfield in Glacier ...
Pablo Almela, James J. Elser, Anthony Zmuda, Thomas Niehaus, Trinity L. Hamilton   +4 more
wiley   +1 more source

Antarctic ice sheet response to sudden and sustained ice-shelf collapse (ABUMIP)

Journal of Glaciology, 2020
Antarctica's ice shelves modulate the grounded ice flow, and weakening of ice shelves due to climate forcing will decrease their ‘buttressing’ effect, causing a response in the grounded ice.
Sainan Sun, Frank Pattyn, Erika G. Simon, Torsten Albrecht, Stephen Cornford, Reinhard Calov, Christophe Dumas, Fabien Gillet-Chaulet, Heiko Goelzer, Nicholas R. Golledge, Ralf Greve, Matthew J. Hoffman, Angelika Humbert, Elise Kazmierczak, Thomas Kleiner, Gunter R. Leguy, William H. Lipscomb, Daniel Martin, Mathieu Morlighem, Sophie Nowicki, David Pollard, Stephen Price, Aurélien Quiquet, Hélène Seroussi, Tanja Schlemm, Johannes Sutter, Roderik S. W. van de Wal, Ricarda Winkelmann, Tong Zhang   +28 more
doaj   +1 more source

Dynamic Boundaries of Antarctic Active Subglacial Lakes Reveal Underestimated Water Volume Change and Overestimated Lakebed Active Area

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract This study revisited 158 documented active subglacial lakes across Antarctica, applying a height‐change anomaly delineation algorithm to CryoSat‐2 and ICESat‐2 satellite altimetry data to assemble a 14.75‐year (2010.5–2025.25) time series of active subglacial lake dynamics.
W. Sauthoff, M. R. Siegfried, R. A. Venturelli, B. E. Smith   +3 more
wiley   +1 more source

Approximating ice sheet – bedrock interaction in Antarctic ice sheet projections

Abstract. The bedrock response to a melting ice sheet provides a negative feedback on ice mass loss. When modelling the future behaviour of the Antarctic Ice Sheet, accounting for the impact of bed deformation on ice dynamics can reduce predictions of future sea level rise by up to 40 % in comparison with scenarios that assume a rigid Earth.
Caroline Jacoba van Calcar, Pippa L. Whitehouse, Roderik S. W. van de Wal, Wouter van der Wal   +3 more
openaire   +2 more sources

Wind‐Driven Coastal Polynya Variability Drives Decadal Ice‐Shelf Melt Variability in the Amundsen Sea

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract The ice shelves in the Amundsen Sea are being melted rapidly by warm Circumpolar Deep Water (CDW), causing sea‐level rise. Ice‐shelf melt variability is controlled by the speed of a shelf‐break undercurrent which transports CDW onto the continental shelf. We study decadal variability of the undercurrent and ice‐shelf melting using new regional
Michael Haigh, Paul R. Holland, Thomas Caton Harrison, Pierre Dutrieux   +3 more
wiley   +1 more source

Coupled solid Earth – Antarctic ice sheet simulations with VILMA and PISM

, 2021
Torsten Albrecht, Meike Bagge, Ricarda Winkelmann, Volker Klemann   +3 more
openalex   +1 more source

Southern Ocean Sulfate Aerosol Sources Quantified From Sulfur Isotopes in Antarctic Ice Cores

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract The Southern Ocean has emerged as a key region for constraining aerosol‐climate interactions due to its relatively low anthropogenic influence. Sulfate is an important aerosol over the Southern Ocean, and models suggest dimethyl sulfide (DMS) is the largest source of sulfate during summer.
U. A. Jongebloed, T. P. Fischer, P. R. Kyle, L. Kang, Y. A. Bhatti, B. Alexander   +5 more
wiley   +1 more source

Connecting the Atlantic Meridional Overturning Circulation to the Southern Ocean Following the Closure of Equatorial Seaways During the Cenozoic

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Global ocean circulation regulates climate and has undergone significant changes over the Cenozoic. Today, the Atlantic Meridional Overturning Circulation (AMOC) is driven by North Atlantic Deep Water (NADW) formation and Southern Ocean upwelling.
Erwan Pineau, Camille Lique, David Ferreira, Thierry Huck, Jean‐Baptiste Ladant, Emma Fabre, Jeanne Millot‐Weil, Yannick Donnadieu   +7 more
wiley   +1 more source

Antarctic last interglacial isotope peak in response to sea ice retreat not ice-sheet collapse

Nature Communications, 2016
The peak in Antarctic ice core isotope values, 128,000 years before present, was concurrent with a significantly warmer-than-present Antarctic climate.
Max D. Holloway, Louise C. Sime, Joy S. Singarayer, Julia C. Tindall, Pete Bunch, Paul J. Valdes   +5 more
doaj   +1 more source

Impacts of Atmospheric Rivers in Central Greenland: Snowfall, Clouds, and Atmospheric State

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 2, 28 January 2026.
Abstract Atmospheric rivers (ARs) are long bands of strong horizontal water vapor transport responsible for over 90% of total integrated vapor transport (IVT) in extratropical and polar regions. Using a 12‐year record (2010–2022) of ground‐based remote sensing, radiosonde, snow stake, and reanalysis data from Summit Station, Greenland, we quantify the ...
A. E. Wedum, C. Pettersen, H. Guy, M. R. Gallagher, M. D. Shupe, K. S. Mattingly   +5 more
wiley   +1 more source