Results 81 to 90 of about 3,714 (183)

Coupled Climate‐Ice‐Sheet Simulations Reveal Novel Teleconnection Between Northern Hemisphere Ice Sheets and the Antarctic Ice Sheet

Geophysical Research Letters
Coupled climate‐ice‐sheet modeling is still in its developing stage, and feedback processes between ice sheets and climate are still not yet fully understood.
Pierre Testorf, Clemens Schannwell, Marie‐Luise Kapsch, Uwe Mikolajewicz   +3 more
doaj   +1 more source

New Constraints on the Onset of Antarctic Glaciation From Combined Radiogenic Hafnium and Neodymium Isotopes

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract The drawdown of atmospheric CO2 likely triggered Antarctic glaciation during the Eocene‐Oligocene Transition (34 Ma). Accurately constraining this shift from “greenhouse” to an “icehouse” climate is essential for understanding global carbon cycle dynamics.
Keehwan Lee, Franco Marcantonio, Michael Bizimis, Howie D. Scher, Brian W. Romans, Lucien Nana Yobo   +5 more
wiley   +1 more source

A 400‐Year Antarctic Ice‐Core Perchlorate Record Reveals Variability in Stratospheric Chlorine Chemistry

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Perchlorate (ClO4−) in polar ice preserves past chlorine oxidation chemistry; however, multi‐centennial Antarctic ClO4− records and the mechanisms controlling their variability remain poorly constrained. Here, we present the first 400‐year (1616−2016) ClO4− record from an Antarctic ice core, revealing two regimes separated around 1980.
Wenzhi Zhou, Su Jiang, Zhe Li, Bo Zhang, Danhe Wang, Dongqi Wang, Guitao Shi   +6 more
wiley   +1 more source

Observational Constraints on Sea Salt Contribution to CCN Over the Southern Ocean

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Earth system models exhibit persistent biases in simulating cloud condensation nuclei (CCN) over the Southern Ocean and Antarctica, largely due to inadequate representation of aerosol sources. Here, we present year‐round (January 2023–February 2024) measurements of aerosol hygroscopicity (HTDMA), particle number size distribution (SMPS), and ...
Wei Xu, Hyojin Kang, Keran Zhang, Lin Yang, Ahsan Ali, Minju Seo, Yeontae Gim, Changeun Kim, Eunho Jang, Chang Hoon Jung, Ji Yi Lee, Radovan Krejci, Ruqian Miao, Ji‐Yeon Park, Colin O’Dowd, Young Jun Yoon, Darius Ceburnis   +16 more
wiley   +1 more source

State of Balance of the Ice Sheet in the Antarctic Peninsula [PDF]

Annals of Glaciology, 1982
Data from ice rises on the east coast of the Antarctic Peninsula can be interpreted as showing that the ice is thinning at rates of up 0.5 m a−1. However, a level line between two nunataks in Palmer Land showed no change in surface elevation over a period of 5 a.
openaire   +2 more sources

Spaceborne Far‐Infrared Signal Simulations Over the Antarctic Plateau With Temperature‐Dependent Ice Cloud Optical Properties

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 17, 16 September 2026.
Abstract Longwave cloud radiative effects significantly influence variability in global and regional Earth systems. However, there have been very few, if any, measurements of the far‐infrared (FIR) radiation over the polar regions, where about half of the outgoing longwave radiation is in the FIR spectrum. This motivated the Polar Radiant Energy in the
Tong Ren, Ping Yang, Xianglei Huang
wiley   +1 more source

The Impact of Fronts and Eddies Under Various Melt Conditions on Antarctic Ice Shelves

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Ocean eddies are observed beneath Antarctic ice shelves, yet their role in regulating basal melting remains unclear. We use nonhydrostatic Large‐Eddy Simulations that resolve eddies and boundary‐layer turbulence to examine a baroclinically unstable salinity front that breaks into eddies.
Wangpeng Gui, Ankit Bhadouriya, Catherine A. Vreugdenhil, Bishakhdatta Gayen   +3 more
wiley   +1 more source

Disentangling the drivers of future Antarctic ice loss with a historically calibrated ice-sheet model [PDF]

The Cryosphere
We use an observationally calibrated ice-sheet model to investigate the future trajectory of the Antarctic ice sheet related to uncertainties in the future balance between sub-shelf melting and ice discharge, on the one hand, and the surface mass balance,
V. Coulon, A. K. Klose, A. K. Klose, C. Kittel, T. Edwards, F. Turner, R. Winkelmann, R. Winkelmann, F. Pattyn   +8 more
doaj   +1 more source

Glacier‐Climate Feedbacks Modulate Last Glacial Maximum Dust Cycle Over the Third Pole

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Geological records indicate only a modest Last Glacial Maximum (LGM) increase in dust deposition over the Third Pole (TP), in contrast to the order‐of‐magnitude rise at high latitudes. Existing climate simulations, which generally prescribe present‐day or no TP glaciers, have struggled to reproduce this muted response.
Qiang Wei, Miao Wang, Zhengguo Shi, Meilin Zhu, Guangjian Wu, Baiqing Xu, Yongyun Hu, Tandong Yao   +7 more
wiley   +1 more source

Uncertainty in Antarctic precipitation projections under global warming

Environmental Research Letters
The Antarctic Ice Sheet is a critical driver of global sea level rise, yet future projections of Antarctic precipitation remain highly uncertain, posing challenges to modeling ice sheet changes.
Kai Man, Yujie Miao, Yonghao Wang, Yusi Feng, Xichen Li   +4 more
doaj   +1 more source