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ICESat (Ice, Cloud, and land Elevation Satellite) was a NASA satellite mission for measuring ice sheet mass balance, cloud and aerosol heights, as well as land topography and vegetation characteristics. It operated as part of NASA's Earth Observing System (EOS).
Ten percent of Earth's land area is covered by loesses or similar deposits. [2] A loess is a periglacial or aeolian (windborne) sediment, defined as an accumulation of 20% or less of clay with a balance of roughly equal parts sand and silt (with a typical grain size from 20 to 50 micrometers), [3] [4] often loosely cemented by calcium carbonate.
Greenhouse Gases Observing Satellite. The first precise carbon dioxide observing satellite and precursor to OCO-2. Himawari 8 and 9: Active Japan Meteorological Agency: 2014 Similar to NASA's GOES satellites. ICESat-2: Active NASA 2018 Measures ice sheet height changes for climate change diagnoses. [16] [17] IMS-1: Active ISRO: 2008 ISS: Active
Sputnik Planitia likely originated as an impact basin that subsequently collected volatile ices. [5] The size of the hypothetical impactor has been estimated as 150–300 km. [1] Alternatively, it has been suggested that the accumulation of ices in this location depressed the surface there, leading to the formation of a basin via a positive feedback process without an impact. [15]
The following is a detailed review of the tidewater glacier cycle derived by Post, with numerous cited examples, the cycle is based on observations of temperate tidewater glaciers in Alaska, not outlet glaciers from large ice sheets or polar glaciers. The accumulation area ratio of a glacier, AAR, is the percentage of a glacier that is a snow ...
Landsat 8 is an American Earth observation satellite launched on 11 February 2013. It is the eighth satellite in the Landsat program; the seventh to reach orbit successfully. . Originally called the Landsat Data Continuity Mission (LDCM), it is a collaboration between NASA and the United States Geological Survey (USG
A satellite view shows mud and debris near Old Fort Elementary School, in the aftermath of Hurricane Helene, in Old Fort, North Carolina, on Oct. 2, 2024. / Credit: Maxar Technologies
An ice cap in equilibrium accumulates and ablates snow at the same rate. The AAR is the ratio between the accumulation area and the total area of the ice cap, which is used to indicate the health of the glacier. [6] Depending on their shape and mass, healthy glaciers in equilibrium typically have an AAR of approximately 0.4 to 0.8. [6]