From 9:00 a.m. to noon (USA Mountain Time) Wednesday October 5, AMSR-E, Aquarius, IceBridge, ICESat/GLAS, MODIS, NISE, and SMAP data will not be available for ordering due to system maintenance.

Get Data

Reverb: NASA search and order tool for subsetting, reprojecting, and reformatting data.

NOTE: Reverb will be decommissioned in the coming months and replaced with Earthdata Search. All links to Reverb will be removed at that time.
Subscription Service: Subscribe to have new data automatically sent when the data become available.
Earthdata Search: NASA's newest search and order tool for subsetting, reprojecting, and reformatting data.
Data Set ID:
MOD29P1N

MODIS/Terra Sea Ice Extent Daily L3 Global 1km EASE-Grid Night, Version 6

MODIS/Terra Sea Ice Extent Daily L3 Global 1km EASE-Grid Night (MOD29P1N) data set contains tiles of daily 1 km resolution nighttime ice surface temperatures and quality assessment data, gridded to the Equal Area Scalable Earth Grid (EASE-Grid).

Version Summary:

Sea ice extent and ice surface temperature algorithms and data sets are the same as Version 5. However, revisions and improvements for Version 6 to algorithm inputs have improved sea ice outputs as follows:

  • Revised calibration of MOD02 thermal bands 31 and 32 decreased calculated brightness temperatures by about -0.01 K and improved accuracy for very cold scenes;
  • The Version 6 land/water mask in the MOD03 geolocation product increased the accuracy of water body and coastline maps;
  • Revisions to the MOD35_L2 cloud mask algorithm have increased the accuracy of cloud detection.

Geographic Coverage

NSIDC has determined that the browse images for this data set contain errors. The science granules are unaffected. We have removed the browse images until the data provider corrects the problem and resends new files. Although we are currently unable to estimate when the reprocessing will be complete, NSIDC will make the new images available as soon as they are delivered.