Topic: NOAA-20 VIIRS Emissive Band Calibration

Date/Time Issued: February 7, 2022  2050 UTC

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

Date/Time of Initial Impact:  March 22, 2022 06:00:00 UTC

Date/Time of Expected End:  March 24, 2022 04:00:00 UTC

Length of Outage: See Details

Details/Specifics of Change: 

On March 22, 2022 at 06:00 UTC, NOAA-20 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 22 06:00z - BB to 297.5K

March 22 09:00z - BB to 302.5K

March 22 12:00z - BB to 307.5K

March 22 15:00z - BB to 312.5K

March 22 18:00z - BB to 315K

March 22 21:00z - BB temperature control off

March 23 21:00z - BB temperature control on and set to 272.5K

March 24 00:00z - BB to 282.5K

March 24 03:00z - BB to 292.5K

Contact information for further information: ESPC Operations at ESPCOperations@noaa.gov or 301-817-3880 24x7 or henok.amenu@noaa.gov during normal business hours.

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

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