Topic: Retirement of Version 8 Total Ozone Retrieval Algorithm
Date/Time Issued: April 15, 2026 1410 UTC
Product(s) or Data Impacted:
CMC_GOME_Daily_bufr
EMC_GOME-TO-L2_BUFR
IND_NCMRWF__GOME_TO_L2_bufr
NOAA_STAR_Polar_GOME_TO_Granules WCOSS_GOME_TO_L2_BUFR CLASS_LEGACY_SRN_GOME-TO-L2_NC
CLASS_LEGACY_SRN_GOME-TO-L3_ASCII
CLASS_LEGACY_SRN_GOME-TO-L3_NC
CLASS_LEGACY_SRN_GOME-TO-MGII_TXT
CLASS_LEGACY_SRN_GOME_TO_Granules
CLOUD_INGEST_GOME_TO_Granules
Products Short Names and File Names are as under:
GOME-TO-L2_NC
V8TOZ-EDR_v1r1_m01_s202604141017560_e202604141020560_c202604141050440.nc
GOME-TO-L3_ASCII
GOME2-V8TO3_v1r0_m01_s202604070000000_e202604072359599_c202604081401479.ASC
GOME-TO-L3_GRB
GOME2-V8TO3_v1r0_m01_s202604130000000_e202604132359599_c202604141402100.grib2
GOME-TO-L3_NC
GOME2-V8TO3_v1r0_m01_s202604130000000_e202604132359599_c202604141401580.nc
GOME-TO-L2_BUFR
V8TOZ-EDR_v1r1_m01_s202604140053560_e202604140056560_c202604140127330.bufr
GOME-TO-MGII_TXT
GOME-MGII-Final_v1r1_m01_s202604141159560_e202604141202560_c202604141232370.txt
Date/Time of Initial Impact: June 15, 2026 0000 UTC
Date/Time of Expected End: NA (Termination of Product)
Length of Impact: NA
Details/Specifics of Change:
Due to the natural degradation of the GOME-2 instrument's optical components on MetOp-B, the signal intensity (throughput) has significantly decreased. This aging process has led to increased noise and reduced accuracy in spectral measurements, negatively impacting the quality of derived products, such as the Aerosol Index.
As a result of this degradation, Office of Satellite and Product Operations (OSPO) intends to retire the GOME2 MetOp-B products on June 15, 2026. A 30-day public comment period is now open to gather feedback on the impacts of this retirement, with comments due by May 15, 2026. Please submit your comments using this form
Web Site(s) for applicable information:
Contact Information for Further Information: Please email User Services at spsd.userservices@noaa.gov or Product Area Lead at vaishali.kapoor@noaa.gov
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