Name: Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations, Version 1
Creator: National Snow and Ice Data Center
Keywords: SEA ICE CONCENTRATION

Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations, Version 1

Data set id:

NSIDC-0081

DOI: 10.5067/U8C09DWVX9LM

Data Citation and Acknowledgment
As a condition of using these data, you must cite the use of this data set. Such a practice gives credit to data set producers and advances principles of transparency and reproducibility.

Maslanik, J. & Stroeve, J. (1999). Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations. (NSIDC-0081, Version 1). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/U8C09DWVX9LM. [describe subset used if applicable]. Date Accessed 07-17-2026.

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There is a more recent version of these data.
Version Summary

June 2016

Starting on 1 April 2016, sea ice concentration fields are computed using F18 data.

March 2015

New smaller pole hole mask used: SSMIS Pole Hole

New spurious ice masks: NIC Valid Ice Masks

1999

Initial release of this data product.

Overview

This data set is retired and no longer available for download. We recommend using the newest version of Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations data set as an alternative. This data set provides a Near-Real-Time (NRT) map of sea ice concentrations for both the Northern and Southern Hemispheres.

Parameter(s):

SEA ICE CONCENTRATION

Platform(s):

DMSP 5D-3/F17

DMSP 5D-3/F18

Sensor(s):

SSMIS

Data Format(s):

PNG

Binary

Temporal Coverage:

1 January 2015 to 2 January 2023

Temporal Resolution:

1 day

Spatial Resolution:

25 km

25 km

Spatial Reference System(s):

NSIDC Sea Ice Polar Stereographic North
EPSG:3411
NSIDC Sea Ice Polar Stereographic South
EPSG:3412

Spatial Coverage:

Northern latitude
-39.23
Southern latitude
-90
Eastern longitude
180
Western longitude
-180
Northern latitude
90
Southern latitude
30.98
Eastern longitude
180
Western longitude
-180

Blue outlined yellow areas on the map below indicate the spatial coverage for this data set.

View Metadata Record

Data Access & Tools

This data set has been retired. There is a more recent version of these data.

Documentation

User Guide

Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations, Version 1 User Guide

Help Articles

General Questions & FAQs

FAQs About NSIDC DAAC's Earthdata Cloud Migration

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