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Greenland Ice Sheet: Increased coastal thinning
Repeated laser‐altimeter surveys and modelled snowfall/summer melt show average ice loss from Greenland between 1997 and 2003 was 80 ± 12 km3 yr−1, compared to about 60 km3 yr−1 for 1993/4–1998/9.…
Derivation of Range and Range Distributions From Laser Pulse Waveform Analysis for Surface Elevations, Roughness, Slope, and Vegetation Heights
The primary purpose of the GLAS instrument is to detect ice elevation changes over time which are used to derive changes in ice volume. Other objectives include measuring sea ice freeboard, ocean and…
Intermittent thinning of Jakobshavn Isbræ, West Greenland, since the Little Ice Age
- B. Csathó, T. Schenk, C. J. van der Veen, W. Krabill
- Environmental ScienceJournal of Glaciology
- 5 May 2008
Abstract Rapid thinning and velocity increase on major Greenland outlet glaciers during the last two decades may indicate that these glaciers became unstable as a consequence of the Jakobshavn effect…
The ICESat-2 Laser Altimetry Mission
NASA's Ice, Cloud and Land Elevation Satellite-2 (ICESat-2), currently planned for launch in 2015, is specifically intended to quantify the amount of change in ice sheets and sea ice and provide key insights into their behavior through the use of precise laser measurements of surface elevation.
Accumulation over the Greenland ice sheet from historical and recent records
Water accumulation, defined as precipitation minus evaporation, was estimated over all of Greenland as part of a program to understand changes in ice sheet mass and elevation. Over 360 historical and…
The Ice, Cloud, and land Elevation Satellite-2 (ICESat-2): Science requirements, concept, and implementation
Pervasive ice sheet mass loss reflects competing ocean and atmosphere processes
Unified estimates of grounded and floating ice mass change from 2003 to 2019 using NASA’s Ice, Cloud and land Elevation Satellite (ICESat) and ICESat-2 satellite laser altimetry reveal patterns likely linked to competing climate processes.
Response of Jakobshavn Isbrae, Greenland, to Holocene climate change
Rapid fluctuations in the velocity of Greenland Ice Sheet (GIS) outlet glaciers over the past decade have made it difficult to extrapolate ice-sheet change into the future. This significant…
Laser altimetry reveals complex pattern of Greenland Ice Sheet dynamics
- B. Csathó, A. Schenk, J. V. van Angelen
- Environmental ScienceProceedings of the National Academy of Sciences
- 15 December 2014
A new record of ice thickness change is presented, reconstructed at nearly 100,000 sites on the Greenland Ice Sheet from laser altimetry measurements spanning the period 1993–2012, partitioned into changes due to surface mass balance (SMB) and ice dynamics.