Results 41 to 50 of about 619 (177)

Calibrating the SAR SSH of Sentinel-3A and CryoSat-2 over the Corsica Facilities

Remote Sensing, 2018
Initially developed to monitor the performance of TOPEX/Poseidon and to follow the Jason legacy satellite altimeters at Senetosa Cape, Corsica, this calibration/validation site has been extended to include a new location at Ajaccio. This addition enables
Pascal Bonnefond, Olivier Laurain, Pierre Exertier, François Boy, Thierry Guinle, Nicolas Picot, Sylvie Labroue, Matthias Raynal, Craig Donlon, Pierre Féménias, Tommaso Parrinello, Salvatore Dinardo   +11 more
doaj   +1 more source

CryoSat-2 Significant Wave Height in Polar Oceans Derived Using a Semi-Analytical Model of Synthetic Aperture Radar 2011–2019

Remote Sensing, 2021
This paper documents the retrieval of significant ocean surface wave heights in the Arctic Ocean from CryoSat-2 data. We use a semi-analytical model for an idealised synthetic aperture satellite radar or pulse-limited radar altimeter echo power.
Harold Heorton, Michel Tsamados, Thomas Armitage, Andy Ridout, Jack Landy   +4 more
doaj   +1 more source

A Spatiotemporal Comparison and Assessment of Multisource Satellite Derived Sea Ice Thickness in the Arctic Thinner Ice Region

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The accuracy and reliability of the latest version of multisource satellite derived Arctic sea ice thickness (SIT) in thinner ice regions are currently uncertain.
Yu Zhang, Guohao Li, Huan Li, Changsheng Chen, Weizeng Shao, Yi Zhou, Deshuai Wang   +6 more
doaj   +1 more source

Applications for CryoSat-2 satellite magnetic data in studies of Earth’s core field variations

Earth, Planets and Space, 2021
We use 20 years of continuous magnetic field measurements from the Ørsted, CHAMP and Swarm satellite missions, supplemented by calibrated platform magnetometer data from the CryoSat-2 satellite, to study time variations of the Earth’s core field at ...
Magnus D. Hammer, Christopher C. Finlay, Nils Olsen   +2 more
doaj   +1 more source

Using microwave imager observations to improve the ocean temperature in a coupled NWP system

Quarterly Journal of the Royal Meteorological Society, EarlyView.
A recent upgrade to the ECMWF IFS has implemented outer‐loop coupling between the atmosphere and the ocean. This work uses this method to pass ocean skin temperature estimates derived from satellite‐borne microwave imagers to the ocean data assimilation system; the updated ocean state is then passed back to the atmospheric system.
Tracy Scanlon, Alan J. Geer, Philip Browne, Patricia de Rosnay, Niels Bormann   +4 more
wiley   +1 more source

Antarctic grounding zone characteristics from CryoSat-2 [PDF]

, 2019
Abstract. We present the results of mapping the limit of tidal flexure (point F) and hydrostatic equilibrium (point H) of the grounding zone of Antarctic ice shelves from CryoSat-2 standard and swath elevation data. Overall we were able to map 41 % of the grounding zone of the larger floating ice shelves and outlet glaciers in Antarctica.
Geoffrey J. Dawson, Jonathan L. Bamber
openaire   +1 more source

Antarctic ice shelf thickness from CryoSat‐2 radar altimetry [PDF]

Geophysical Research Letters, 2015
AbstractIce shelf thickness for the whole of Antarctica is derived from 4 years (2011–2014) of CryoSat‐2 (CS2) radar altimetry measurements using the assumption that the shelves are in hydrostatic equilibrium. The satellite orbit and novel synthetic aperture radar interferometric mode of CS2 results in 92.3% data coverage over the ice shelves, with ...
Chuter, S. J., Bamber, J. L.
openaire   +3 more sources

Intercomparisons and Evaluations of Satellite-Derived Arctic Sea Ice Thickness Products

Remote Sensing
Currently, Arctic sea ice thickness (SIT) data with extensive spatiotemporal coverage primarily comes from satellite observations, including CryoSat-2, Soil Moisture and Ocean Salinity (SMOS), and the Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2).
Feifan Chen, Deshuai Wang, Yu Zhang, Yi Zhou, Changsheng Chen   +4 more
doaj   +1 more source

Estimating snow depth over Arctic sea ice from calibrated dual-frequency radar freeboards [PDF]

The Cryosphere, 2018
Snow depth on sea ice remains one of the largest uncertainties in sea ice thickness retrievals from satellite altimetry. Here we outline an approach for deriving snow depth that can be applied to any coincident freeboard measurements after calibration
I. R. Lawrence, M. C. Tsamados, J. C. Stroeve, J. C. Stroeve, T. W. K. Armitage, A. L. Ridout   +5 more
doaj   +1 more source

Anomalous Sea Ice Retreat in the Refreezing Western Arctic by a 30‐Year Record Cyclone in October: Oceanic, Atmospheric, and Wave Influences

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract An extreme Arctic cyclone (AC) in October 2022 reached a record‐low pressure of 955 hPa and caused unusual wave‐induced sea‐ice breakup in the Canada Basin, making it the strongest event in the western Arctic in 30 years. Here we examine how this event interrupted freeze‐up by quantifying sea‐ice retreat associated with atmospheric and oceanic
Xingkun Xu, Takuji Waseda, Tsubasa Kodaira, Takehiko Nose, Kazutaka Tateyama   +4 more
wiley   +1 more source