Results 81 to 90 of about 24,572,978 (199)

Revisiting the status of the Arctic's Last Ice Area as a refuge for marine predators

Ecosphere, Volume 17, Issue 7, July 2026.
Abstract The Last Ice Area (LIA), located north of the Canadian Arctic Archipelago and Greenland, has the Arctic's oldest and thickest sea ice. The LIA is hypothesized to be a potential climate refuge for ice‐dependent top predators as Arctic sea ice continues to decline.
Kristin L. Laidre, Axel Schweiger, Jinlun Zhang, Benjamin Cohen, Michael Steele, Steven H. Ferguson, G. W. K. Moore   +6 more
wiley   +1 more source

A Comparison of Sea-Ice Freeboard Distributions from Aircraft Data and CryoSat-2 [PDF]

, 2012
Sea ice thickness on basin-scale is an important variable in the polar climate system, however datasets are sparse. The only remote sensing technique capable of obtaining sea ice thickness on that scale are satellite altimeter missions, such as the ...
Helm, Veit, Gerdes, Rüdiger, Ricker, Robert, Skourup, Henriette, Hendricks, Stefan   +4 more
core   +1 more source

Impact of data assimilation on Arctic sea‐ice thickness variability and its coupling with atmospheric forcing

Quarterly Journal of the Royal Meteorological Society, Volume 152, Issue 779, July 2026 Part B.
We document for the first time how the assimilation of CS2SMOS observations improves the model representation of Arctic sea‐ice thickness (SIT) and its variability: biases are reduced (top row), while excessive variability in the Beaufort Sea and lack of variability in the ice pack are both corrected (bottom row).
Jiping Xie, Yue Ying, Richard Davy, Laurent Bertino   +3 more
wiley   +1 more source

SWOT Observations Constrain a 4D‐Var State Estimate of the California Current System

Earth and Space Science, Volume 13, Issue 7, July 2026.
Abstract The Surface Water and Ocean Topography (SWOT) mission provides high‐resolution sea surface height (SSH) observations at 2‐km spacing, resolving submesoscale features typical of ageostrophic motions and associated with instabilities. Here, we demonstrate the assimilation of SWOT data into a regional configuration of the MITgcm for the ...
A. Verdy, S. T. Gille, B. D. Cornuelle, G. Gopalakrishnan, M. R. Mazloff   +4 more
wiley   +1 more source

Greenland Ice Sheet Elevation Change From CryoSat‐2 and ICESat‐2

Geophysical Research Letters
Although fluctuations in ice sheet surface mass balance lead to seasonal and interannual elevation changes, it is unclear if they are resolved differently by radar and laser satellite altimeters.
Nitin Ravinder, Andrew Shepherd, Inès Otosaka, Thomas Slater, Alan Muir, Lin Gilbert   +5 more
doaj   +1 more source

Effects of Wintertime Snow Depth Assimilation on Summertime Sea Ice Prediction Experiments Utilizing a Fully Coupled Regional Arctic Model With Perfect Boundary Conditions

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 7, July 2026.
Abstract During the past decades, the rapid decline of sea ice in the Arctic Ocean has substantially favored commercial navigation activities in the summertime. Numerical sea ice prediction on a seasonal scale plays a crucial role in guiding the programme of such activities, yet the role of snow depth data assimilation in numerical sea ice prediction ...
Xi Liang, Chengyan Liu, Xichen Li, Zhongxiang Tian, Zhuoming Ding, Fu Zhao, Ming Li, Na Liu, Jiaying Huang   +8 more
wiley   +1 more source

Coastal sea level from inland CryoSat-2 interferometric SAR altimetry

, 2015
The European Space Agency's CryoSat-2 satellite can operate in a novel synthetic aperture radar interferometric (SARIn) mode where its nominal footprint (swath) is observed by two antennas and the phase difference between the signals is used to ...
Stenseng, Lars, Abulaitijiang, Adili, Ole Baltazar Andersen, Lars Stenseng, Andersen, Ole Baltazar, Adili Abulaitijiang   +5 more
core   +1 more source

Lake Level Estimation Based on CryoSat-2 SAR Altimetry and Multi-Looked Waveform Classification

Remote Sensing, 2016
In this study, reliable water levels for four lakes are estimated based on an innovative processing strategy using a semi-automatic CryoSat-2 Synthetic Aperture Radar (SAR) multi-looked waveform classification.
Franziska Göttl, Denise Dettmering, Felix L. Müller, Christian Schwatke   +3 more
doaj   +1 more source

Machine Learning Eliminates Reanalysis Warm Bias and Reveals Weaker Winter Surface Cooling Over Arctic Sea Ice

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract The surface energy budget governs Arctic sea‐ice growth/melt, yet observations are sparse, and reanalysis data sets suffer from systematic biases. Here, we train a neural network with observational data to bias‐correct hourly ERA5 fluxes over Arctic ice‐covered regions (≥70°N; sea‐ice concentration >80%) for 1994–2024.
Akil Hossain, Paul Keil, Harsh Grover, Ian M. Brooks, Christopher J. Cox, Michael R. Gallagher, Mats A. Granskog, Heather Guy, Stephen R. Hudson, P. Ola G. Persson, Matthew D. Shupe, Michael Tjernström, Jutta Vüllers, Von P. Walden, Felix Pithan   +14 more
wiley   +1 more source

Parameterization of CryoSat-2 Radar Waveforms Across the Greenland Ice Sheet [PDF]

, 2023
Geodetic surface mass balance calculations regularly rely on satellite radar altimeters such as CryoSat-2 to understand elevation and volume changes of the Greenland Ice Sheet (GrIS).
Ronan, Alexander Clark
core