• The Terra satellite successfully completed its Constellation Exit Maneuvers (CEM) on October 12 and 19, 2022. The instruments have since returned to a nominal state and data processing and distribution resumed as of October 24. Please note that there is a gap in coverage between October 10, 2022 and October 23, 2022 during which the satellite exercises and subsequent stabilization and Post-CEM calibrations took place.


    Please note that the CEM does not indicate the end of life for the Terra mission, but it does represent a change in orbital positioning. Users who are interested in knowing more about the Terra morning constellation exit can refer to this note.


  • MODIS Collection 6.1 has been fully reprocessed and temporal coverage is now complete. MODIS Collection 6.0 data sets will be processed continuously through the end of 2022. Data for C6.0 will likely remain available for just a few months thereafter.

MODIS/Terra Sea Ice Extent and IST Daily L3 Global 4km EASE-Grid Day, Version 61 (MOD29E1D)
Data set:
This is the most recent version of these data.
Version Summary
This C61 product is identical in format to the C6 version. The C61 reprocessing does not contain any change to the science algorithm used to generate this product. Any improvement or change in the C61 product compared to the C6 product is from changes and enhancements to the calibration approach used to generate the input products and changes to the polarization correction used in this collection reprocessing..


This global Level-3 (L3) data set provides Northern and Southern Hemisphere maps of sea ice extent and ice surface temperature. The maps are generated by compositing 1 km observations from the 'MODIS/Terra Sea Ice Extent Daily L3 Global 1km EASE-Grid Day’ (https://doi.org/10.5067/MODIS/MOD29P1D.061) product. These data are provided daily in the EASE-Grid polar projection at a resolution of approximately 4 km. The terms "Version 61" and "Collection 6.1" are used interchangeably in reference to this release of MODIS data.
Data Format(s):
Temporal Coverage:
24 February 2000 to present
Temporal Resolution:
1 day
Spatial Resolution:
4 km
4 km
Spatial Coverage:

Data Access & Tools

A free NASA Earthdata Login account is required to access these data. Learn More

Help Articles

Getting started

For the snow cover and sea ice products, users can use MODIS Collections 6 and 6.1 together.
The lag time between observations and availability of MODIS products is only a few days. Lag time may be extended due to satellite maneuvers and extra quality assurance required for the geolocation data after the maneuver.
This short article describes the customization services available for ICESat-2 data using Earthdata Search

How To

Many NSIDC DAAC data sets can be accessed using the NSIDC DAAC's Data Access Tool. This tool provides the ability to search and filter data with spatial and temporal constraints using a map-based interface. Users have the option to
Data subscriptions are available for select NSIDC DAAC data collections. Once signed up, the subscription service automatically sends you new data as they are delivered from active NASA satellite missions.
All 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, using wget or curl. Basic command line instructions are provided in the article below. 
NASA Earthdata Search is a map-based interface where a user can search for Earth science data, filter results based on spatial and temporal constraints, and order data with customizations including re-formatting, re-projecting, and spatial and parameter subsetting.