• This data set was recently downgraded to a “Basic” Level of Service. Learn more about what this means for users here

  • As of 9 June 2023, bi-weekly production of the Antarctic data in this data set has been suspended indefinitely. The Arctic data is not affected and will continue to be produced.

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

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NOAA@NSIDC data recently transitioned to HTTPS. The directory structure has NOT changed, but the beginning of the URL has changed from:ftp://sidads.colorado.edu/pub/DATASETS/to: