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Multisensor Analyzed Sea Ice Extent - Northern Hemisphere (MASIE-NH)

Metadata Updated: August 30, 2022

The Multisensor Analyzed Sea Ice Extent Northern Hemisphere (MASIE-NH) products provide measurements of daily sea ice extent and sea ice edge boundary for the Northern Hemisphere and 16 Arctic regions in a polar stereographic projection. Products include an ASCII text file of sea ice extent values in square km over the entire Northern Hemisphere with 16 separate Arctic regions identified, time series plots of the 16 regions, and image files that visually show where the sea ice is. The MASIE-NH imagery are provided at a nominal 4 km resolution. The input data comes from the 4 km Interactive Multisensor Snow and Ice Mapping System (IMS) snow and ice product produced by the National Ice Center (NIC). NIC utilizes visible imagery, passive microwave data, and NIC weekly analysis products to create their data product. The MASIE-NH products are distributed in a number of formats including ASCII text, GeoTIFF, PNG, shapefiles, and Google Earth files and are available from 01 October 2006 to the present. The most recent days worth of imagery plus the ASCII text data file are provided via the MASIE Web site. A complete archive of the imagery and data can be obtained via FTP.Note: MASIE may look like several other sea ice products distributed at NSIDC and elsewhere, but its source data and intended uses are different. If intended and appropriate uses of the data are not clear after reading the documentation, please contact NSIDC User Services.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources


Metadata Date August 13, 2015
Metadata Created Date November 12, 2020
Metadata Updated Date August 30, 2022
Reference Date(s) December 14, 2010 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from NSIDC

Additional Metadata

Resource Type Dataset
Metadata Date August 13, 2015
Metadata Created Date November 12, 2020
Metadata Updated Date August 30, 2022
Reference Date(s) December 14, 2010 (publication)
Responsible Party NOAA (Principal Investigator); National/Naval Ice Center (Principal Investigator); National Snow and Ice Data Center (Principal Investigator, Point of Contact)
Contact Email
Guid noaa.ncei.nsidc.G02186
Category Tag 16E15F51 D96E 4051 9124 75665Abdc6Ff ["Arctic","Arctic Ocean, Sea Ice and Coasts","Arctic Peoples and Ecosystems"]
Access Constraints Access Constraints : none, Use Constraints : none
Bbox East Long 180
Bbox North Lat 90
Bbox South Lat -90
Bbox West Long -180
Coupled Resource
Frequency Of Update asNeeded
Harvest Object Id c6ac3dca-3085-4d8b-b7a0-f5bb3164b78e
Harvest Source Id f24c6629-4c02-44bc-863f-5f319481e810
Harvest Source Title NSIDC
Metadata Language eng; usa
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-180.0, -90.0], [180.0, -90.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, -90.0]]]}
Progress underDevelopment
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 20061001
Temporal Extent End Unknown

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