Results 11 to 20 of about 1,409 (159)
Uncertainties on the combined use of ICESat and ICESat-2 observations to monitor lake levels
Frontiers in Water, 2023 Lake water level is an important variable to indicate lake hydrological balances and climate change impacts. Benefiting from the launch of the laser altimeters ICESat and ICESat-2, higher spatial-resolution elevation measurements have opened new ...
Shuangxiao Luo +4 more
doaj +2 more sources
Geophysical Research Letters, 2021 With the launch of the Ice, Cloud and Land Elevation Satellite‐2 (ICESat‐2), densely measuring the Antarctic ocean all year long, monthly sea ice thickness changes can be inspected.
Yue Xu +4 more
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ICESAT-2 ALTIMETRY AS GEODETIC CONTROL [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 Digital elevation models (DEMs) are of fundamental importance for a large variety of scientific and commercial applications. Many geoscience studies require the most precise and current information about the Earth’s topography.
C. C. Carabajal, J.-P. Boy
doaj +3 more sources
ICESat laser altimetry over small mountain glaciers [PDF]
The Cryosphere, 2016 Using sparsely glaciated southern Norway as a case study, we assess the potential and limitations of ICESat laser altimetry for analysing regional glacier elevation change in rough mountain terrain.
D. Treichler, A. Kääb
doaj +5 more sources
ICESat‐2 Precision Orbit Determination [PDF]
Earth and Space Science, 2021 AbstractThe ICESat‐2 Precision Orbit Determination (POD) system computes the precise position of the laser altimeter instrument in inertial space, a measurement necessary for accurate geolocation of individual photon surface returns. ICESat‐2 POD solutions are generated by the reduction of Global Positioning System (GPS) double‐difference carrier phase
T. C. Thomas +4 more
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Increased Ice Thinning over Svalbard Measured by ICESat/ICESat-2 Laser Altimetry [PDF]
Remote Sensing, 2021 A decade-long pronounced increase in temperatures in the Arctic, especially in the Barents Sea region, resulted in a global warming hotspot over Svalbard. Associated changes in the cryosphere are the consequence and lead to a demand for monitoring of the glacier changes.
Lukas Sochor +2 more
openaire +2 more sources
ICESat sea level comparisons [PDF]
Geophysical Research Letters, 2005 ICESat calculations of sea level and mesoscale variability are demonstrated and compared to calculations from TOPEX altimetry. In particular, we examine the accuracy of the ICESat Laser 2a Release 21 GLA15 ocean elevations. A global ICESat ocean elevation bias of −10.0 ± 1.0 cm (low) was found with respect to TOPEX, obtained with a reference mean sea ...
Timothy J. Urban, Bob E. Schutz
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ICESat‐derived inland water surface spot heights [PDF]
Water Resources Research, 2016 AbstractAccurate measurement of water surface height is key to many fields in hydrology and limnology. Satellite radar and laser altimetry have been shown to be useful means of obtaining such data where no ground gauging stations exist, and the accuracy of different satellite instruments is now reasonably well understood.
O'Loughlin, Fiachra E +3 more
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PRECISION AND DEVIATION COMPARISON BETWEEN ICESAT AND ENVISAT IN TYPICAL ICE GAINING AND LOSING REGIONS OF ANTARCTICA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 This paper analyzes the precision and deviation of elevations acquired from Envisat and The Ice, Cloud and Land Elevation Satellite (ICESat) over typical ice gaining and losing regions, i.e. Lambert-Amery System (LAS) in east Antarctica, and Amundsen Sea
W. Du +11 more
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Overview of the ICESat Mission [PDF]
Geophysical Research Letters, 2005 The Geoscience Laser Altimeter System (GLAS) on the NASA Ice, Cloud and land Elevation Satellite (ICESat) has provided a view of the Earth in three dimensions with unprecedented accuracy. Although the primary objectives focus on polar ice sheet mass balance, the GLAS measurements, distributed in 15 science data products, have interdisciplinary ...
B. E. Schutz +4 more
openaire +1 more source