Skip to main content

Description

This data set (AE_SI12) reports average daily, 12.5 km resolution, horizontally and vertically polarized brightness temperatures (Tb) at four frequencies—18.7 GHz, 23.8 GHz, 36.5 GHz and 89.0 GHz. It also reports: daily sea ice concentrations derived with the Enhanced NASA Team (NT2) algorithm; daily sea ice concentration differences between NT2 and the legacy AMSR Basic Bootstrap Algorithm (BBA); and daily snow depths over sea ice. Data are provided on Northern and Southern Hemisphere, polar stereographic grids.

These data are derived from observations acquired by the Advanced Microwave Scanning Radiometer for EOS (AMSR-E).

Version Description

Changes for this version include: * Uses Version 4 of the AMSR-E/Aqua L2A Global Swath Spatially-Resampled Brightness Temperatures as input; * NH water filter parameters adjusted to better characterize open water cluster during cold months. This change eliminates ~60% of NH false ice identifications in open ocean during Oct. to May. * Removed sea ice concentration difference flagging scheme, which in previous versions indicated explicitly whether BBA and/or NT2 values were missing. * Data file format changed to HDF-EOS5.

Product Summary

Platforms
Aqua
Instruments
AMSR-E
Spatial Extent

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

,

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

Spatial Resolution
12.5 Kilometers x 12.5 Kilometers
Spatial Reference System(s)
Multiple EPSG codes (see User Guide)
Location
NORTHERN HEMISPHERE ,
POLAR ,
SOUTHERN HEMISPHERE
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2002-06-01 to 2011-10-04
Temporal Resolution
1 Day
Concept ID
C3628319333-NSIDC_CPRD
Data State
COMPLETE
Number of Files/Granules
3381
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

Markus, T., Comiso, J. C., Boisvert, L., & Meier, W. N. (2025). AMSR-E/Aqua Daily L3 12.5 km Brightness Temperature, Sea Ice Concentration, & Snow Depth Polar Grids, Version 4 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/J00N1DZZHGW9 Date Accessed: 2026-06-07

Documents

Publications Citing This Dataset

Filters
Title Year Author Topic
Neural Network Algorithms for Estimating Snow Depth and Scattering Mean Free Path from ICESat-2 Measurements of Multiple Scattering Inside Snow Zhou, Yinuo, Hu, Kyle, Lu, Xiaomei Brightness Temperature, Sea Ice Concentration, Sea Ice Concentration, Snow Depth, Snow Depth
Neural network-based snow depth retrieval from AMSR-2 brightness temperatures using ICESat-2 measurement as ground truth Sun-Mack, Sunny, Hu, Yongxiang, Lu, Xiaomei, Chen, Yan, Omar, Ali Atmospheric Water Vapor, Precipitation, Brightness Temperature, Sea Ice Concentration, Sea Ice Motion, Snow Depth, Terrain Elevation, Vegetation Height, Sea Ice Concentration, Snow Depth
Modeling clearsky cooling episodes over Arctic sea ice during polar night: The effect of explicitly resolved leads and realistic snow depth Chechin, D. G., Shestakova, A. A., Chalaya, N. V., Makhotina, I. A. Brightness Temperature, Sea Ice Concentration, Sea Ice Concentration, Snow Depth, Snow Depth
Toward a Multidecadal SAR Analysis of Sea Ice Types in the Atlantic Sector of the Arctic Ocean Guo, Wenkai, Landy, Jack, Lohse, Johannes, Doulgeris, Anthony P., Johansson, Malin, Eltoft, Torbjrn, Itkin, Polona, Xu, Shiming Brightness Temperature, Sea Ice Concentration, Sea Ice Concentration, Snow Depth, Snow Depth
Living under Arctic kelp forests: linking soft-bottom communities to kelp cover in the Canadian Arctic Lavoie, C, Howland, KL, Filbee-Dexter, K, Massicotte, P, Goldsmit, J, McKindsey, CW, Archambault, P Brightness Temperature, Sea Ice Concentration, Sea Ice Concentration, Snow Depth, Snow Depth
Contrasting two major Arctic coastal polynyas: the role of sea ice in driving diel vertical migrations of zooplankton in the Laptev and Beaufort seas Dmitrenko, Igor A., Petrusevich, Vladislav, Preuer, Andreas, Kosobokova, Ksenia, Bouchard, Caroline, Geoffroy, Maxime, Komarov, Alexander S., Babb, David G., Kirillov, Sergei A., Barber, David G. Atmospheric Emitted Radiation, Emissivity, Optical Depth/Thickness, Radiative Flux, Reflectance, Transmittance, Clouds, Cloud Condensation Nuclei, Cloud Droplet Concentration/Size, Cloud Liquid Water/Ice, Cloud Optical Depth/Thickness, Cloud Precipitable Water, Cloud Asymmetry, Cloud Ceiling, Cloud Frequency, Cloud Height, Cloud Top Pressure, Cloud Top Temperature, Cloud Vertical Distribution, Cloud Emissivity, Cloud Radiative Forcing, Cloud Reflectance, Cloud Types, Sea Ice Concentration, Brightness Temperature, Sea Ice Concentration, Snow Depth, Snow Depth
Evaluation of Summertime Passive Microwave and Reanalysis Sea-Ice Song, Kexin, Minnett, Peter J. Heat Flux, Heat Flux, Heat Flux, Heat Flux, Longwave Radiation, Longwave Radiation, Shortwave Radiation, Shortwave Radiation, Water Vapor Tendency, Water Vapor Flux, Cloud Dynamics, Cloud Microphysics, Snow/Ice, Precipitation, Specific Humidity, Ice Fraction, Skin Temperature, Sea Surface Skin Temperature, Skin Temperature, Reflectance, Brightness Temperature, Sea Ice Concentration, Sea Ice Motion, Snow Depth, Sea Ice Concentration, Snow Depth
Quantifying the influence of snow over sea ice morphology on L-band passive microwave satellite observations in the Southern Ocean Zhou, Lu, Stroeve, Julienne, Nandan, Vishnu, Willatt, Rosemary, Xu, Shiming, Zhu, Weixin, Kacimi, Sahra, Arndt, Stefanie, Yang, Zifan Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Elevation, Snow Depth, Brightness Temperature, Reforestation, Terrestrial Ecosystems, Permafrost, Rock Glaciers, Glacier Elevation/Ice Sheet Elevation, Glacier Motion/Ice Sheet Motion, Glacier Thickness/Ice Sheet Thickness, Glacier Topography/Ice Sheet Topography, Glaciers, Ice Sheets, Icebergs, Ice Deformation, Ice Edges, Ice Extent, Ice Floes, Ice Growth/Melt, Ice Temperature, Ice Types, Icebergs, Leads, Pack Ice, Polynyas, Reflectance, Sea Ice Motion, Ice Extent, Ice Growth/Melt, Ice Motion, Ice Velocity, Lake Ice, Permafrost, River Ice, Snow Cover, Landslides, Aeolian Landforms, Coastal Landforms, Fluvial Landforms, Glacial Landforms, Karst Landforms, Tectonic Landforms, Land Use/Land Cover Classification, Landscape Ecology, Landscape Patterns, Landscape Processes, Reforestation, Surface Roughness, Terrain Elevation, Topographic Effects, Barrier Islands, Beaches, Deltas, Dunes, Estuaries, Fjords, Inlets, Lagoons, Mangroves, Marshes, Rocky Coasts, Shorelines, Wind Waves, Surface Winds, Ice Deformation, Ice Depth/Thickness, Ice Edges, Ice Extent, Ice Floes, Ice Roughness, Ice Types, Icebergs, Leads, Pack Ice, Polynyas, Sea Ice Motion, Glacial Landforms, Caldera, Cinder Cone, Faults, Folds, Geyser, Graben, Horst, Lava Dome, Lava Plain, Maar, Mountains, Plateau, Ridge, Rift Valley, Tuya, Volcano, Tectonic Landforms, Earthquakes, Plate Tectonics, Volcanic Activity, Glacier Elevation/Ice Sheet Elevation, Glacier Motion/Ice Sheet Motion, Glacier Topography/Ice Sheet Topography, Glaciers, Ice Sheets, Icebergs, Ice Extent, Ice Growth/Melt, Ice Motion, Ice Velocity, Lake Ice, Permafrost, River Ice, Sea Ice Concentration, Sea Ice Concentration, Snow Depth
PolarGAN: Creating realistic Arctic sea ice concentration images with user-defined geometric preferences Kim, Mingyu, Lee, Jaekyeong, Choi, Leechan, Choi, Minjoo Sea Ice Concentration, Brightness Temperature, Sea Ice Concentration, Snow Depth, Snow Depth
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 Brightness Temperature, Sea Ice Concentration, Sea Ice Concentration, Snow Depth, Snow Depth
Mapping of active frazil and sea ice production in the Northern Hemisphere, with comparison to the Southern Hemisphere Nakata, K., Ohshima, K. I. Brightness Temperature, Microwave Imagery, Reforestation, Terrestrial Ecosystems, Permafrost, Rock Glaciers, Glacier Elevation/Ice Sheet Elevation, Glacier Motion/Ice Sheet Motion, Glacier Thickness/Ice Sheet Thickness, Glacier Topography/Ice Sheet Topography, Glaciers, Ice Sheets, Icebergs, Ice Deformation, Ice Depth/Thickness, Ice Edges, Ice Extent, Ice Floes, Ice Growth/Melt, Ice Roughness, Ice Temperature, Ice Types, Icebergs, Leads, Pack Ice, Polynyas, Reflectance, Sea Ice Motion, Ice Extent, Ice Growth/Melt, Ice Motion, Ice Velocity, Lake Ice, Permafrost, River Ice, Snow Cover, Landslides, Aeolian Landforms, Coastal Landforms, Fluvial Landforms, Glacial Landforms, Karst Landforms, Tectonic Landforms, Land Use/Land Cover Classification, Landscape Ecology, Landscape Patterns, Landscape Processes, Reforestation, Surface Roughness, Terrain Elevation, Topographic Effects, Barrier Islands, Beaches, Deltas, Dunes, Estuaries, Fjords, Inlets, Lagoons, Mangroves, Marshes, Rocky Coasts, Shorelines, Wind Waves, Surface Winds, Ice Deformation, Ice Depth/Thickness, Ice Edges, Ice Extent, Ice Floes, Ice Roughness, Ice Types, Icebergs, Leads, Pack Ice, Polynyas, Sea Ice Motion, Glacial Landforms, Caldera, Cinder Cone, Faults, Folds, Geyser, Graben, Horst, Lava Dome, Lava Plain, Maar, Mountains, Plateau, Ridge, Rift Valley, Tuya, Volcano, Tectonic Landforms, Earthquakes, Plate Tectonics, Volcanic Activity, Glacier Elevation/Ice Sheet Elevation, Glacier Motion/Ice Sheet Motion, Glacier Topography/Ice Sheet Topography, Glaciers, Ice Sheets, Icebergs, Ice Extent, Ice Growth/Melt, Ice Motion, Ice Velocity, Lake Ice, Permafrost, River Ice, Sea Ice Concentration, Sea Ice Concentration, Snow Depth, Snow Depth
Estimation of Sea Ice Production in the North Water Polynya Based on Ice Arch Duration in Winter During 20062019 Ren, Haiyi, Shokr, Mohammed, Li, Xinqing, Zhang, Zhilun, Hui, Fengming, Cheng, Xiao Brightness Temperature, Sea Ice Concentration, Sea Ice Motion, Snow Depth, Brightness Temperature, Sea Ice Concentration, Snow Depth
Retrieval of Snow Depth on Arctic Sea Ice from the FY3B/MWRI Li, Lele, Chen, Haihua, Guan, Lei Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Elevation, Snow Depth, Brightness Temperature, Sea Ice Concentration, Sea Ice Motion, Sea Ice Concentration, Snow Depth
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. Brightness Temperature, Sea Ice Concentration, Sea Ice Motion, Snow Depth, Brightness Temperature, Sea Ice Concentration, Snow Depth
Estimation of Sea Ice Production in the Bering Sea From AMSR-E and AMSR2 Data, With Special Emphasis on the Anadyr Polynya Ohshima, Kay I., Tamaru, Naoya, Kashiwase, Haruhiko, Nihashi, Sohey, Nakata, Kazuki, Iwamoto, Katsushi Brightness Temperature, Sea Ice Concentration, Sea Ice Concentration, Snow Depth, Snow Depth
The Impact of the Amundsen Sea Freshwater Balance on Ocean Melting of the West Antarctic Ice Sheet Bett, David T., Holland, Paul R., Naveira Garabato, Alberto C., Jenkins, Adrian, Dutrieux, Pierre, Kimura, Satoshi, Fleming, Andrew Brightness Temperature, Sea Ice Concentration, Sea Ice Concentration, Snow Depth, Snow Depth
Artificial Neural Network for the Short-Term Prediction of Arctic Sea Ice Concentration Choi, Minjoo, De Silva, Liyanarachchi Waruna Arampath, Yamaguchi, Hajime Sea Ice Concentration, Brightness Temperature, Sea Ice Concentration, Snow Depth, Snow Depth
Acquiring the Arctic-Scale Spatial Distribution of Snow Depth Based on AMSR-E Snow Depth Product Nie, Yafei, Wang, Yuzhe, Lv, Xianqing Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Elevation, Snow Depth, Brightness Temperature, Sea Ice Concentration, Sea Ice Concentration, Snow Depth
An Attempt to Improve Snow Depth Retrieval Using Satellite Microwave Radiometry for Rough Antarctic Sea Ice Kern, Stefan, Ozsoy, Burcu Brightness Temperature, Sea Ice Concentration, Sea Ice Motion, Snow Depth, Brightness Temperature, Sea Ice Concentration, Snow Depth
Improving oil spill trajectory modelling in the Arctic Nordam, Tor, Beegle-Krause, CJ, Skancke, Jrgen, Nepstad, Raymond, Reed, Mark Brightness Temperature, Sea Ice Concentration, Sea Ice Concentration, Snow Depth, Snow Depth
Compensating Biases and a Noteworthy Success in the CMIP5 Representation of Antarctic Sea Ice Processes Holmes, C.R., Holland, P.R., Bracegirdle, T.J. Brightness Temperature, Sea Ice Concentration, Sea Ice Concentration, Snow Depth, Snow Depth
Comparison of sea ice classification methods based on satellite scatterometer and radiometer data in the Weddell Sea, Antarctica Pang, Xiaoping, Gao, Xiang, Ji, Qing Brightness Temperature, Sea Ice Concentration, Sea Ice Concentration, Snow Depth, Snow Depth
Fine-scale oceanographic features characterizing successful Adelie penguin foraging in the SW Ross Sea Ballard, G, Schmidt, AE, Toniolo, V, Veloz, S, Jongsomjit, D, Arrigo, KR, Ainley, DG Brightness Temperature, Sea Ice Concentration, Sea Ice Concentration, Snow Depth, Snow Depth
Prediction of sea ice motion with convolutional long short-term memory networks Petrou, Zisis I., Tian, Yingli Brightness Temperature, Sea Ice Concentration, Sea Ice Concentration, Snow Depth, Snow Depth
Modeling the Seasonal Cycle of Iron and Carbon Fluxes in the Amundsen Sea Polynya, Antarctica StLaurent, P., Yager, P. L., Sherrell, R. M., Oliver, H., Dinniman, M. S., Stammerjohn, S. E. Brightness Temperature, Sea Ice Concentration, Sea Ice Concentration, Snow Depth, Snow Depth
You're viewing 25 of 42