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Description

The Near-real-time Ice and Snow Extent (NISE) data set provides daily, global maps of sea ice concentrations and snow extent. These data are not suitable for time series, anomalies, or trends analyses. They are meant to provide a best estimate of current ice and snow conditions based on information and algorithms available at the time the data are acquired. Near-real-time products are not intended for operational use in assessing sea ice conditions for navigation.

This NISE Version 2 product contains SSMIS-derived sea ice concentrations and snow extents derived from the Special Sensor Microwave Imager (SSM/I) aboard the Defense Meteorological Satellite Program (DMSP) F13 satellite. For DMSP-F16, SSMIS-derived data, see <a href="https://doi.org/10.5067/JAQDJKPX0S60"> NISE Version 3</a>. For DMSP-F17, SSMIS-derived data, see <a href="https://nsidc.org/data/nise/versions/4"> NISE Version 4</a>. For DMSP-F18, SSMIS-derived data, see <a href="https://doi.org/10.5067/3KB2JPLFPK3R"> NISE Version 5</a>.

Product Summary

Platforms
DMSP 5D-2/F13
Instruments
SSM/I
Spatial Extent

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

Spatial Resolution
25 Kilometers x 25 Kilometers
Geographic Region
ANTARCTICA ,
ARCTIC ,
NORTHERN HEMISPHERE ,
SOUTHERN HEMISPHERE
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
1995-05-04 to 2009-09-11
Concept ID
C3087360994-NSIDC_CPRD
Data State
COMPLETE
Number of Files/Granules
5232
Processing Level
3
Published
Science Keywords
Sea Ice Concentration ,
Snow Cover

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

Nolin, A., Armstrong, R., & Maslanik, J. (2019). Near-Real-Time SSM/I EASE-Grid Daily Global Ice Concentration and Snow Extent, Version 2 [Data set]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/4FSODMDM1WEJ Date Accessed: 2025-12-14

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