Topic: VIIRS SDR reflective solar bands (RSB)

Date/Time Issued:M-B January 17, 2020 1330Z

Product(s) or Data Impacted: VIIRS SDR reflectance/radiance productsM-B

Date/Time of Initial Impact: January 16, 2020 0000Z

Date/Time of Expected End: TBD

Length of Event:M-B TBD

Details/Specifics of Change:M-B

There has been an anomaly in the VIIRS SDR reflective solar bands (RSB) calibration for both NOAA-20 and S-NPP due to an unexpected change in the solar vector since about 2020-01-16 0:00 UTC. As a result, large errors in VIIRS SDR reflectance/radiance products have been observed which affect RSB based products.M-B This anomaly appears to affect the OMPS SDR as well. ESPC Level 2 products using VIIRS RSB bands and OMPS level 2 products are degraded. The exact cause of this anomaly is still under investigation. Please stay tuned for further updates.

Contact Information for Further Information: ESPC Operations at and 301-817-3880

Web Site(s) for applicable information: N/A

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