Results 71 to 80 of about 619 (177)

Drivers of Basal Melt Variability for Pine Island Glacier Ice Shelf: Ocean Forcing Versus Geometric Feedback

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Since the 1970s, Pine Island Glacier has exhibited thinning, acceleration, and retreat. During the last decade, the ice shelf has undergone major geometric changes, whilst the quantity and temperature of modified Circumpolar Deep Water on the Amundsen Sea continental shelf fluctuated significantly.
Katie Lowery, Paul R. Holland, Pierre Dutrieux, Anna E. Hogg, Noel Gourmelen   +4 more
wiley   +1 more source

A First Look at the Snow/Ice Penetration Effect of SWOT Observations on Water Level of Global Glacial Lakes

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract The Surface Water and Ocean Topography (SWOT) mission promises quasi‐global monitoring of glacial lakes, yet the elevation difference arising from its Ka‐band radar penetrating lake snow/ice cover remains unquantified. This poses a challenge to assessing their level changes.
Shuangxiao Luo, Chunqiao Song, Pengfei Zhan, Jiayi Li, Li Peng   +4 more
wiley   +1 more source

Toward Constraining Ocean Estimates in Ice‐Covered Regions Using Sea Level Altimetry Data

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract Estimates of ice‐covered oceans are difficult to constrain using in situ observations, particularly if one needs broad spatiotemporal coverage of subsurface properties. Here we explore the value of sea level (ζ $\zeta $) data from the laser altimeter on ICESat‐2 and multi‐mission radar altimeter products distributed by the Archiving ...
Rui M. Ponte, Mengnan Zhao, Ian Fenty, Ichiro Fukumori, Ou Wang   +4 more
wiley   +1 more source

Shipboard Marine Gravimeters Operated on Vessels in the U.S. Academic Research Fleet: Capabilities and Data Quality

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Shipboard gravity anomaly data provide high‐resolution information for a wide range of Earth and ocean science research as well as ground‐truthing US national geodetic modeling. Motivated by the end of life‐cycle for legacy Bell aerospace marine Gravity Meter system (BGM‐3) gravimeters onboard vessels in the U.S. Academic Research Fleet, a new
Jyun‐Nai Wu, Masako Tominaga, Hannah Mark, Jian Zhu, Daniel Fornari, Maurice Tivey, Thomas Lanagan, Steve Faluotico, Eric Hayden, Marissa Small, Daniel Aliod, Nigel Brady, Alicia Metzger, Potential Field Pool Equipment program   +13 more
wiley   +1 more source

Arctic Freeboard and Snow Depth From Near‐Coincident CryoSat‐2 and ICESat‐2 (CRYO2ICE) Observations: A First Examination of Winter Sea Ice During 2020–2022

Earth and Space Science
In the summer of 2020, ESA changed the orbit of CryoSat‐2 to align periodically with NASA's ICESat‐2 mission, a campaign known as CRYO2ICE, which allows for near‐coincident CryoSat‐2 and ICESat‐2 observations in space and time over the Arctic until ...
Renée M. Fredensborg Hansen, Henriette Skourup, Eero Rinne, Knut V. Høyland, Jack C. Landy, Ioanna Merkouriadi, René Forsberg   +6 more
doaj   +1 more source

Recent Ocean Tide Models Comparison From the GRACE Perspective

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract A model of ocean tides is generally used to remove the dynamic tidal signal in satellite gravimetric observations, such as GRACE(‐FO). Model imperfections can cause stripes and long period aliasing errors in monthly gravity solutions. Recent developments in ocean tide modeling have substantially improved accuracy at high latitudes and in ...
Chaoyang Zhang, Nicholas A. Childress, Srinivas V. Bettadpur, Mark E. Tamisiea, Himanshu Save, Byron D. Tapley   +5 more
wiley   +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

Detecting Sea Ice Leads and Floes in the Northwest Passage Using CryoSat-2

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Knowledge of sea ice lead and floe density is important for ship navigation, understanding ice pack dynamics, and mapping primary productivity. Furthermore, reliable lead and floe discrimination is essential for the calculation of sea ice freeboard and ...
Amy E. Swiggs, Isobel R. Lawrence, Andy Ridout, Andrew Shepherd   +3 more
doaj   +1 more source

High-Resolution Mass Trends of the Antarctic Ice Sheet through a Spectral Combination of Satellite Gravimetry and Radar Altimetry Observations

Remote Sensing, 2019
Time-variable gravity measurements from the Gravity Recovery and Climate Experiment (GRACE) and GRACE-Follow On (GRACE-FO) missions and satellite altimetry measurements from CryoSat-2 enable independent mass balance estimates of the Earth’s ...
Ingo Sasgen, Hannes Konrad, Veit Helm, Klaus Grosfeld   +3 more
doaj   +1 more source

Optimising Interannual Sea Ice Thickness Variability Retrieved From CryoSat‐2

Geophysical Research Letters
Satellite radar altimeters like CryoSat‐2 estimate sea ice thickness by measuring the return‐time of transmitted radar pulses, reflected from the sea ice and ocean surface, to measure the radar freeboard.
Carmen Nab, Robbie Mallett, Connor Nelson, Julienne Stroeve, Michel Tsamados   +4 more
doaj   +1 more source