The following data sets have been retired from NSIDC as of July 31:
- NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 4
- Near-Real-Time NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 2
Data from these versions are no longer accessible, though all related documentation remains available on the data set web pages for reference:
We recommend using the latest versions: NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 5 and Near-Real-Time NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 3. These can be accessed through the "more recent version" link on the V4 and V2 web pages. The latest versions of the NOAA/NSIDC sea ice concentration climate data record will continue to be maintained.
Data set DOIs:
https://doi.org/10.7265/rjzb-pf78
https://doi.org/10.7265/j0z0-4h87