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Description

This data set reports average daily horizontally and vertically polarized brightness temperatures and sea ice concentrations on 25 km resolution north and south polar stereographic grids. The data are derived from observations acquired by the Advanced Microwave Scanning Radiometer (AMSR) for EOS (AMSR-E) and AMSR2 instruments that have been spatially resampled by the Japan Aerospace Exploration Agency (JAXA) to unify the AMSR-E and AMSR2 missions.

Brightness temperatures are available at 6.9 GHz, 10.7 GHz, 18.7 GHz, 23.8 GHz, 36.5 GHz and 89.0 GHz for ascending and descending orbits, and as a single daily average. Sea ice concentrations are generated with the Enhanced NASA Team (NT2) algorithm; a separate variable reports the daily sea ice concentration difference between the legacy AMSR Basic Bootstrap Algorithm (ABA) and the NT2.

Version Description

Initial release

Product Summary

Platforms
Aqua ,
GCOM-W1
Instruments
AMSR-E ,
AMSR2
Projects
AMSR Unified
Spatial Extent

N: 89.24 S: 30.98 E: 180 W: -180

,

N: -39.23 S: -89.24 E: 180 W: -180

Spatial Resolution
25 Kilometers x 25 Kilometers
Spatial Reference System(s)
Multiple EPSG codes (see User Guide)
Location
POLAR
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2012-07-02
Temporal Resolution
1 Day
Concept ID
C3243521560-NSIDC_CPRD
Data State
COMPLETE
Number of Files/Granules
8177
Processing Level
3
Published
Science Keywords
Brightness Temperature ,
Sea Ice Concentration

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

Markus, T., Comiso, J., & Meier, W. (2018). AMSR-E/AMSR2 Unified L3 Daily 25 km Brightness Temperatures & Sea Ice Concentration Polar Grids, Version 1 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/TRUIAL3WPAUP Date Accessed: 2026-10-04

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Publications Citing This Dataset

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Title Authors Year Referenced Datasets
AdaSA-SD (v1.0): An Adaptive Seasonal Algorithm for Snow Depth Retrieval Over Arctic Sea Ice
  • Zhou, Yi, Wang, Xianwei, Lei, Ruibo, Zhang, Chentong, Zhang, Yu
Spire Near-nadir GNSS-R for Sea Ice Detection: First Results
  • Li, Ming, Zhang, Jiahua, Weiss, Jan-Peter, Braun, John J., Gullotta, William, Sleziak-Sallee, Maggie
Spatiotemporal analysis of sea ice in the Weddell Sea of Antarctic based
  • Ding, Y. R., Liu, X., Dai, X. F., Yang, Y., Yin, G. Y., Sun, H. P., Guo, J. Y.
Sea ice concentration estimates from ICESat-2 linear ice fraction - Part
  • Horvat, Christopher, Buckley, Ellen, Stewart, Madelyn
National Weather Service Alaska Sea Ice Program: gridded ice concentration maps for the Alaskan Arctic
  • Pacini, Astrid, Steele, Michael, Schreck, Mary-Beth
Sensitivity of NEMO4.0-SI3 model parameters on sea ice budgets in the Southern Ocean
  • Nie, Yafei, Li, Chengkun, Vancoppenolle, Martin, Cheng, Bin, Boeira Dias, Fabio, Lv, Xianqing, Uotila, Petteri
Satellite passive microwave sea-ice concentration data set intercomparison using Landsat data
  • Kern, Stefan, Lavergne, Thomas, Pedersen, Leif Toudal, Tonboe, Rasmus Tage, Bell, Louisa, Meyer, Maybritt, Zeigermann, Luise
Snow depth product over Antarctic sea ice from 2002 to 2020 using multisource passive microwave radiometers
  • Shen, Xiaoyi, Ke, Chang-Qing, Li, Haili
On the Synergy of SMAP and AMSR2 for Estimating Snow Depth on Arctic Sea
  • He, Lian, Xue, Binghua, Huang, Senwen, Hui, Fengming, Chen, Zhuoqi, Cheng, Xiao
The ice factory of Hudson Bay: Spatiotemporal variability of the Kivalliq Polynya
  • Bruneau, Jennifer, Babb, David, Chan, Wayne, Kirillov, Sergei, Ehn, Jens, Hanesiak, John, Barber, David G.
The Antarctic sea ice cover from ICESat-2 and CryoSat-2: Freeboard, snow depth, and ice thickness
  • Kacimi, Sahra, Kwok, Ron
An Attempt to Improve Snow Depth Retrieval Using Satellite Microwave Radiometry for Rough Antarctic Sea Ice
  • Kern, Stefan, Ozsoy, Burcu
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