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Description

The Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) instrument on the NASA Earth Observing System (EOS) Aqua satellite, provides global passive microwave measurements of land, ocean, and atmospheric variables for the investigation of water and energy cycles.

This Level-3 gridded product (AE_SI12) includes brightness temperatures at 18.7 through 89.0 GHz, sea ice concentration, and snow depth over sea ice. Data are mapped to a polar stereographic grid at 12.5 km spatial resolution. Sea ice concentration and brightness temperatures include daily ascending averages, daily descending averages, and daily averages; snow depth over sea ice data is a five-day running average. Data are stored in HDF-EOS format and are available from 19 June 2002 to 3 October 2011 via FTP.

Product Summary

Platforms
Aqua
Instruments
AMSR-E
Spatial Extent

N: -39.23 S: -90 E: 180 W: -180

,

N: 90 S: 30.98 E: 180 W: -180

Spatial Resolution
12.5 Kilometers x 12.5 Kilometers
Location
ANTARCTICA ,
ARCTIC ,
POLAR
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2002-06-19 to 2011-10-03
Temporal Resolution
1 Day
Concept ID
C3228765408-NSIDC_CPRD
Data State
DEPRECATED
Number of Files/Granules
0
Processing Level
3
Published
Science Keywords
Brightness Temperature ,
Sea Ice Concentration ,
Snow Depth

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Cavalieri, D., Markus, T., & Comiso, J. (2003). AMSR-E/Aqua Daily L3 12.5 km Brightness Temperature, Sea Ice Concentration, & Snow Depth Polar Grids, Version 2 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/AMSR-E/AE_SI12.002 Date Accessed: 2026-06-20

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