Glaciers/Ice Sheets - Earthdata
2023年12月20日 · Glaciers are masses of land ice, formed by the further recrystallization of firn, flowing continuously from higher to lower elevations. Ice sheets are a continuous sheet of land ice that covers a very large area and moves outward in many directions. This type of ice mass is so thick as to mask the land surface contours, in contrast to the smaller and thinner highland ice. …
Ice Sheets - Earthdata
2022年8月30日 · A continuous sheet of land ice that covers a very large area and moves outward in many directions. This type of ice mass is so thick as to mask the land surface contours, in contrast to the smaller and thinner highland ice. The continental glacier of Greenland is sometimes called the Inland Ice. This term is often used to describe the great ice masses that …
Ice Sheet Measurements - Earthdata
1997年3月9日 · Ice Sheet Measurements. Scientists have adopted three general approaches to ice sheet mass balance measurement: comparing outflow and melt to snowfall accumulation (the mass budget method), observing changes in glacier elevation (volume change or geodetic method), and detecting changes in the Earth’s gravity field over the ice sheet ...
Ice Velocity Mapping of the Antarctic Ice Sheet - Earthdata
2021年3月10日 · Ice sheet surface velocity is a fundamental observable of their dynamics, that has only been available recently from space and that is central to assessments of past, current and future contributions to sea level (US Climate Change Research Program [USCCRP], 2012). Here, we will generate and distribute continental-scale, multi-year, digital ice ...
Glacier Mass Balance/Ice Sheet Mass Balance | Earthdata
2019年5月31日 · Glacier Mass Balance/Ice Sheet Mass Balance. Find Data. Mass balance describes the net gain or loss of snow and ice through a given year. It is usually expressed in terms of water gain or loss. Definition source: National Aeronautics and Space Administration.
ITS LIVE: Inter-Mission Time Series of Land Ice Velocity ... - Earthdata
2020年4月16日 · Records of ice flow will be accompanied by a growing 30-year time series of ice sheet and ice shelf elevation changes from 1993 through to 2023, synthesizing data from two NASA and six ESA satellite altimeters. These will be validated against NASA IceBridge laser altimetry through the end of that mission. A standardized record of quarterly ...
Glacier Thickness/Ice Sheet Thickness - Earthdata
2007年2月13日 · After the Larsen B. The Earth Observing System Data and Information System is a key core capability in NASA’s Earth Science Data Systems Program. It provides end-to-end capabilities for managing NASA’s Earth science data from various sources—satellites, aircraft, field measurements, and various other programs.
New Dataset of Greenland Ice Sheet DEMs Available at NASA's …
2020年5月13日 · A new dataset with gridded digital elevation models (DEMs) of Greenland Ice Sheet outlet glaciers is available through NASA’s Physical Oceanography Distributed Active Archive Center (PO.DAAC). The dataset, OMG Glacial Elevations from GLISTIN-A Ver. 1 (DOI: 10.5067/OMGEV-GLNA1), is part of the Oceans Melting Greenland (OMG) mission and is ...
Ice Velocity Mapping of the Great Ice Sheets: Antarctica
2020年2月18日 · The Antarctic ice sheet is by far the largest reservoir of fresh water ice on Earth and the largest potential contributor to sea level rise in centuries to come. Recent observations from satellites have shown that the ice sheet is not immune to changes and is capable of rapid response to climate forcing.
Collecting Data at a Glacial Pace: The Greenland Ice ... - Earthdata
2015年8月28日 · Jakobshavn is Greenland's largest outlet glacier, and drains 6.5% of Greenland's ice sheet area. Image courtesy of NASA's Scientific Visualization Studio. Satellites have collected data about changes in Greenland’s ice cover since 1979, including NASA’s Ice, Cloud,and land Elevation Satellite ( ICESat ) mission (2003-2010) and the upcoming ...