Data Set ID:
NSIDC-0009

Nimbus-5 ESMR Polar Gridded Sea Ice Concentrations, Version 1

Daily and monthly averaged sea ice concentrations from the Nimbus-5 Electrically Scanning Microwave Radiometer (ESMR) are available for the Arctic and Antarctic from 12 December 1972 through 31 December 1976 at 25 km gridded resolution. Raw data were reprocessed to include ocean masks that reduce weather effects and coastal contamination, and to include a 15 percent ice threshold. Reprocessed data are in Hierarchical Data Format (HDF) and are available via FTP.

This is the most recent version of these data.

Version Summary:

initial release

STANDARD Level of Service

Data: Data integrity and usability verified

Documentation: Key metadata and user guide available

User Support: Assistance with data access and usage; guidance on use of data in tools

See All Level of Service Details

Parameter(s):
  • SEA ICE > SEA ICE CONCENTRATION
Data Format(s):
  • HDF
Spatial Coverage:
N: -39.23, 
N: 90, 
S: -90, 
S: 30.98, 
E: 180, 
E: 180, 
W: -180
W: -180
Platform(s):Nimbus-5
Spatial Resolution:
  • 25 km x 25 km
Sensor(s):ESMR
Temporal Coverage:
  • 13 December 1972 to 11 May 1977
Version(s):V1
Temporal Resolution1 dayMetadata XML:View Metadata Record
Data Contributor(s):Josefino 'Joey' Comiso, H. Zwally, Claire Parkinson

Geographic Coverage

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As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.

Parkinson, C. L., J. C. Comiso, and H. J. Zwally. Edited by W. N. Meier and J. Stroeve. 2004. Nimbus-5 ESMR Polar Gridded Sea Ice Concentrations, Version 1. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: https://doi.org/10.5067/W2PKTWMTY0TP. [Date Accessed].

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No technical references available for this data set.

How To

V0 Programmatic Data Access Guide
Data from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) can be accessed directly from our HTTPS file system. We provide basic command line Wget and curl instructions for HTTPS file system downloads below. For questions about programmatic access to NSIDC... read more
How do I convert an HDF5/HDF-EOS5 file into binary format?
To convert HDF5 files into binary format you will need to use the h5dump utility, which is part of the HDF5 distribution available from the HDF Group. How you install HDF5 depends on your operating system. Full instructions for installing and using h5dump on Mac/Unix and... read more