Environment & Energy
Related: About this forumNotice on NSIDC "Sea Ice Today" site
Notice: Recent delivery from the US Navy of the SSMIS passive microwave data that this sea ice product uses has become more sporadic. The Defense Department has informed NSIDC that they will reduce the priority of processing the SSMIS data, resulting in likely daily data gaps. NSIDC will explore switching to a different sensor, the JAXA Advanced Microwave Scanning Radiometer 2 (AMSR2). We expect to be able to continue our regular analyses after calibrating between sensors to keep the time series as consistent as possible. However, this transition will take time. We apologize for any inconvenience and appreciate your patience during this transition.
https://nsidc.org/sea-ice-today
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(7,155 posts)OKIsItJustMe
(21,249 posts)WEDNESDAY, JUNE 4, 2025
Recent delivery from the US Navy of the SSMIS passive microwave data that several sea ice and brightness temperature products use has become more sporadic. The Defense Department has informed NSIDC that they will reduce the priority of processing the SSMIS data, resulting in likely daily data gaps. NSIDC will explore switching to a different sensor, the JAXA Advanced Microwave Scanning Radiometer 2 (AMSR2). However, this transition will take time. We apologize for any inconvenience and appreciate your patience during this transition.
The data sets using SSMIS for input:
- Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS
- Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR
- DMSP SSM/I-SSMIS Daily Polar Gridded Brightness Temperatures
- Near-Real-Time DMSP SSM/I-SSMIS Daily Polar Gridded Brightness Temperatures
- Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations
- Near-Real-Time NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration
- Near-Real-Time SSM/I-SSMIS EASE-Grid Daily Global Ice Concentration and Snow Extent
- Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data
- Sea Ice Index