Version 4 of the MEaSUREs Global Record of Daily Landscape Freeze/Thaw Status data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). New for this version:
- the record now spans 1979 to 2016;
- the freeze/thaw domain encompasses all land areas affected by seasonal freezing, including urban, snow-ice dominant, open water body dominant, and barren land;
- freeze/thaw status is determined with a modified seasonal threshold algorithm, calibrated annually for all pixels using daily surface air temperature records;
- new bit flags identify cells (and days) with missing/interpolated Tb, large open water bodies, complex terrain, and large precipitation events.
This data set is funded by NASA’s Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program.