651
NOUS72 KNES 071919
ADMNES
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:  OCTOBER 7, 2025 1915 UTC



PRODUCT(S) OR DATA IMPACTED: OZONE MAPPING AND PROFILER SUITE (OMPS)

DATE/TIME OF INITIAL IMPACT: NO EARLIER THAN NOVEMBER 25, 2025 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


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