Results 11 to 20 of about 4,330 (196)

Mapping ice sheet grounding lines with CryoSat-2 [PDF]

Advances in Space Research, 2018
The boundary between grounded and floating ice is an important glaciological parameter, because it delineates the lateral extent of an ice sheet and it marks the optimal location for computing ice discharge. We present a method for detecting the grounding line as the break in ice sheet surface slope, computed from CryoSat-2 elevation measurements using
Hogg, AE, Shepherd, A, Gilbert, L, Muir, A, Drinkwater, MR   +4 more
openaire   +5 more sources

Improved retrieval of land ice topography from CryoSat-2 data and its impact for volume-change estimation of the Greenland Ice Sheet [PDF]

The Cryosphere, 2016
A new methodology for retrieval of glacier and ice sheet elevations and elevation changes from CryoSat-2 data is presented. Surface elevations and elevation changes determined using this approach show significant improvements over ESA's publicly ...
J. Nilsson, A. Gardner, L. Sandberg Sørensen, R. Forsberg   +3 more
doaj   +8 more sources

Near-real-time Arctic sea ice thickness and volume from CryoSat-2 [PDF]

The Cryosphere, 2016
Timely observations of sea ice thickness help us to understand the Arctic climate, and have the potential to support seasonal forecasts and operational activities in the polar regions.
R. L. Tilling, A. Ridout, A. Shepherd
doaj   +6 more sources

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   +7 more sources

River Levels Derived with CryoSat-2 SAR Data Classification—A Case Study in the Mekong River Basin [PDF]

Remote Sensing, 2017
In this study we use CryoSat-2 SAR (delay-Doppler synthetic-aperture radar) data in the Mekong River Basin to estimate water levels. Compared to classical pulse limited radar altimetry, medium- and small-sized inland waters can be observed with CryoSat-2
Eva Boergens, Karina Nielsen, Ole Baltazar Andersen, Denise Dettmering, Florian Seitz   +4 more
doaj   +6 more sources

Analysis and Inter-Calibration of Wet Path Delay Datasets to Compute the Wet Tropospheric Correction for CryoSat-2 over Ocean [PDF]

Remote Sensing, 2013
Unlike most altimetric missions, CryoSat-2 is not equipped with an onboard microwave radiometer (MWR) to provide wet tropospheric correction (WTC) to radar altimeter measurements, thus, relying on a model-based one provided by the European Center for ...
Clara Lázaro, Alexandra L. Nunes, M. Joana Fernandes   +2 more
doaj   +4 more sources

Coastal sea level from CryoSat-2 SARIn altimetry in Norway [PDF]

Advances in Space Research, 2018
Abstract Conventional (pulse-limited) altimeters determine the sea surface height with an accuracy of a few centimeters over the open ocean. Sea surface heights and tide-gauge sea level serve as each other’s buddy check. However, in coastal areas, altimetry suffers from numerous effects, which degrade its quality.
Idzanovic, Martina, Ophaug, Vegard, Andersen, Ole Baltazar   +2 more
openaire   +6 more sources

Lead and Floe Detection From CryoSat‐2 Radar and ICESat‐2 Laser Altimetry

Earth and Space Science
Differences in satellite sampling affect their ability to resolve small‐scale features over Arctic sea ice. For CryoSat‐2 (CS2) and ICESat‐2 (IS2) these differences are driven by geometric (footprint resolution) and radiometric (radar or laser) sampling.
R. Tilling, A. Egido, J. Harbeck, N. Kurtz, A. Petty, A. Ridout, A. Shepherd, J. Wimert, D. Yi   +8 more
doaj   +2 more sources

Assessment of Lead Discrimination from CryoSat-2 [PDF]

, 2012
Sea ice is strongly affecting the global climate, and the sea ice extent has been monitored by satellites since 1979. To estimate the Arctic sea ice volume, ice thickness must be determined. The measurements of sea ice thickness are however more difficult to achieve, and encounter limitations due to spatial and temporal variability. The measurements of
Kildegaard Rose, Stine, Connor, L. N., Newman, T., Farrell, S. L., Smith, W. H., Forsberg, René   +5 more
openaire   +3 more sources

Synthesis of the ICESat/ICESat-2 and CryoSat-2 observations to reconstruct time series of lake level

International Journal of Digital Earth, 2023
Synthesis of multi-satellite altimetry facilitates the acquisition of long-term changes in lake level but may induce biases due to inconsistent data sources, and thus remains largely unexplored.
Ye Feng, Leiku Yang, Pengfei Zhan, Shuangxiao Luo, Tan Chen, Kai Liu, Chunqiao Song   +6 more
doaj   +1 more source