Topic: NOAA-20 VIIRS Emissive Band Calibration

Date/Time Issued: February 8, 2022  1620 UTC

Product(s) or Data Impacted: All NOAA-20 VIIRS Emissive Bands

Date/Time of Initial Impact:  March 8, 2022 06:00:00 UTC

Date/Time of Expected End:  March 10, 2022 04:00:00 UTC

Length of Outage: See Details

Details/Specifics of Change: 

On March 8, 2022 at 06:00z, S-NPP VIIRS will perform its annual Emissive Band Calibration. Due to the VIIRS blackbody temperature changes during the calibration, the VIIRS science data quality may be affected for certain applications, but the data is expected to remain within specification.

Below is a timeline of the blackbody heating/cooling cycle:

March 8 06:00z - BB to 297.5K

March 8 09:00z - BB to 302.5K

March 8 12:00z - BB to 307.5K

March 8 15:00z - BB to 312.5K

March 8 18:00z - BB to 315K

March 8 21:00z - BB temperature control off

March 9 21:00z - BB temperature control on and set to 272.5K

March 10 00:00z - BB to 282.5K

March 10 03:00z - BB to 292.5K

Contact information for further information: ESPC Operations at or 301-817-3880 24x7 or during normal business hours.

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

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