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Data · collection · 2002

Aqua/AMSR-E L2 AMSR2 Format Snow Depth

Listed in NASA Earthdata CMR

Aqua/AMSR-E L2 AMSR2 Format Snow Depth dataset is obtained from the AMSR-E sensor onboard Aqua and produced by the Japan Aerospace Exploration Agency (JAXA).Aqua of NASA was launched on May 4th, 2002 in Sun-synchronous sub-recurrent Orbit.

Description

Aqua observes various kinds of physical phenomena related to water and energy circulation from space. Aqua data promoted the research activities for interactions between the atmosphere, oceans and lands, and their effects on climate changes.AMSR-E scans the Earth's surface by mechanically rotating the antenna and acquires radiance data of the Earth's surface.

Each frequency band is monitored by vertical and horizontal polarized wave. It conically scans and keeps an angle of incidence on the earth surface (a nominal of 55 degrees) and accomplishes a swath width of about 1450 km. The AMSR-E reached its limit to maintain the antenna rotation speed necessary for regular observations, and the AMSR-E restarted its observation in slow rotation mode (2 rotations per minute) on December 4, 2012.

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However, the AMSR-E reached its limit to maintain the antenna rotation speed necessary for slow rotation mode and it automatically halted its observation and rotation on December 4, 2015.Level 2 product stores the Geophysical quantity from the brightness temperature of level 1 product.This product includes Snow Depth (SND). Compared with non-snow surfaces, therefore, a snowpack has a distinctive electromagnetic signature at frequencies above 25 GHz.

When viewed using passive microwave radiometers from above the snowpack, the scattering of upwelling radiation depresses the brightness temperature of the snow at increasingly high frequencies. This scattering behavior of snow can be exploited to detect the presence of snow on the ground. Having detected the snow, it is then possible to estimate the snow depth of the pack using the degree of scattering.

The physical quantity unit is cm.Also, the quality flag for each observation point (Pixel Data Quality) is stored.The provided format is HDF5. Spatial resolution is 10 km. The current version of the product is "Version 8".

The generation unit is scene (defined as a half orbit).

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Catalogue records · 2

Topics

Stated by source
Advanced Microwave Scanning Radiometer-EOS · Earth Observing System, Aqua · Snow Ice
Provenance · 1 source records, 13 field assertions
SourceKeyLast seenRaw
NASA Earthdata CMRC2698132629-JAXA12 d agoJSON v1
FieldAssertionExtractorEvidence
access_levelsource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[instrument].gcmd_instrument:amsr-esource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[measured_variable].gcmd:earth-science/terrestrial-hydrosphere/snow-icesource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[platform].gcmd_platform:aquasource · NASA CMRconnector:nasa_cmr@1.0.0
created_datesource · NASA CMRconnector:nasa_cmr@1.0.0
descriptionsource · NASA CMRconnector:nasa_cmr@1.0.0/umm/Abstract
license_textsource · NASA CMRconnector:nasa_cmr@1.0.0
publication_datesource · NASA CMRconnector:nasa_cmr@1.0.0
spatialsource · NASA CMRconnector:nasa_cmr@1.0.0/umm/SpatialExtent
temporalsource · NASA CMRconnector:nasa_cmr@1.0.0/umm/TemporalExtents
titlesource · NASA CMRconnector:nasa_cmr@1.0.0/umm/EntryTitle
updated_datesource · NASA CMRconnector:nasa_cmr@1.0.0
version_labelsource · NASA CMRconnector:nasa_cmr@1.0.0