Update #3: The ADR-11193 for the NOAA-20 Ozone Mapping and Profiler Suite (OMPS) Nadir Mapper TC SDR and GEO (SOMTC and GOTCO) has been re-scheduled to January 15, 2026.

Update #2: Due to the continued lapse of appropriations the ADR-11193 for the NOAA-20 Ozone Mapping and Profiler Suite (OMPS) Nadir Mapper TC SDR and GEO (SOMTC and GOTCO) has been re-scheduled to no earlier than December 9, 2025. 

Update #1:.Due to a lapse of appropriations the ADR-11193 for the NOAA-20 Ozone Mapping and Profiler Suite (OMPS) Nadir Mapper TC SDR and GEO (SOMTC and GOTCO) has been re-scheduled to no earlier than November 25, 2025. Please also note the NOAA-20 V8TOz EDRs change detailed below. BUFR products will also be impacted. 

Topic: NOAA-20 Ozone Mapping and Profiler Suite (OMPS) Nadir Mapper TC SDR and GEO (SOMTC and GOTCO) ADR-11193

Date/Time Issued:  December 9, 2025 1432 UTC

Product(s) or Data Impacted: Ozone Mapping and Profiler Suite (OMPS)

Date/Time of Initial Impact: January 15, 2026  TBD UTC

Date/Time of Expected End: NA

Length of Impact: NA

Details/Specifics of Change:

NOAA-20 Ozone Mapping and Profiler Suite (OMPS) NM SDR contains 35-cross track (CT) low resolution data sets in the NOAA20 SDR, SOMTC. The new NOAA-20 tables below will enable 139 CT medium resolution data sets in the NOAA-20 OMPS NM SDR.  

Compressed HDF5 File Size Increase Per Granule

NOAA-20 OMPS TC SDR (SOMTC) increase from ~500KB to 1.6MB

NOAA-20 OMPS GEO (GOTCO)  increase from ~110KB  to 170KB

Compressed HDF5 Daily Volume Increase (14 orbits * 80 granules per orbit)

NOAA-20 OMPS TC SDR daily will increase from .5GB to 1.8GB

NOAA-20 OMPS TC GEO daily will increase from .1GB to .2GB

Tables include: 

OMPS-TC-STRAYLIGHT-LUT_j01

OMPS-TC-WAVELENGTH-GND-PI_j01

OMPS-TC-CF-EARTH-GND-PI_j01

OMPS-TC-EV-SAMPLE-GND-PI_j01

OMPS-TC-MACROTABLE-GND-PI_j01

OMPS-TBL-VERS-GND-PI_j01

The NOAA-20 V8TOz EDRs will also be impacted by this change, exhibiting smaller FOVs. Specifically, the number of cross-track FOVs per granule will increase from 35 to 139, while the along-track FOVs remain at 15. This effectively reduces the new cross-track FOVs to one-fourth the size of the current ones.

Please note: This release will not occur during a Critical Weather Day (CWD).

The contents of this release are subject to change based on user readiness, customer feedback, and management approval. Additional ESPC notifications may provide further details and updates concerning this release.

Web Site(s) for applicable information: NA

Contact Information for Further Information: Please email User Services at spsd.userservices@noaa.gov 

This message was sent from ESPC.Notification@noaa.gov. You have been sent this and other notifications because you have opted in to receive it. If for any reason, you wish to unsubscribe, please contact ESPC Help Desk at ESPCOperations@noaa.gov or (301) 817-3880. Please note: it may take up to two business days to process your unsubscribe request.