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Table · dataset · 2025

Gridded Monthly Sea Ice Extent and Concentration, 1850 Onward, Version 2

Listed in NASA Data Portal

Notice: Due to funding limitations, this data set was recently changed to a “Basic” Level of Service.

Description

Learn more about what this means for users and how you can share your story here: Level of Service Update for Data Products . Observations from historical sources are the basis of this monthly gridded sea ice concentration product that begins in 1850.

In 1979, these sources give way to a single source: concentration from satellite passive microwave data. The historical observations come in many forms: ship observations, compilations by naval oceanographers, analyses by national ice services, and others. Monthly sea ice concentration is given in a 1/4 degree latitude by 1/4 degree longitude grid.

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In addition to the concentration array, for each month a corresponding source array indicates where each of 16 possible sources is used. The file of concentration and source arrays conforms to NetCDF-4 standards.

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Topics

Inferred from text
Hydrology 68%
Provenance · 1 source records, 11 field assertions
SourceKeyLast seenRaw
NASA Data Portalef7ab10b-59f6-4650-bfb4-e35e82a2f4f89 d agoJSON v1
FieldAssertionExtractorEvidence
concepts[field].anzsrc:group:3707enrichment · data nasa govtaxonomy-embedding@1.0.0title+keywords+description (68%)
concepts[field].local:field:astronomymapping · data nasa govconnector:data_nasa_gov@1.0.0
concepts[field].local:field:earth-environmentalmapping · data nasa govconnector:data_nasa_gov@1.0.0
concepts[field].local:field:ocean-atmosphericmapping · data nasa govconnector:data_nasa_gov@1.0.0
concepts[field].local:field:physicsmapping · data nasa govconnector:data_nasa_gov@1.0.0
created_datesource · data nasa govconnector:data_nasa_gov@1.0.0
descriptionsource · data nasa govconnector:data_nasa_gov@1.0.0/notes
license_textsource · data nasa govconnector:data_nasa_gov@1.0.0
publication_datesource · data nasa govconnector:data_nasa_gov@1.0.0
titlesource · data nasa govconnector:data_nasa_gov@1.0.0/title
updated_datesource · data nasa govconnector:data_nasa_gov@1.0.0