Updated #1: MSPPS Metop-A MHS products are now terminated due to the MHS channel-2 failure.

Topic: Metop-A MHS Channel 2 Failure Due to Noise Increase

Date/Time Issued: March 05, 2020 1650Z

Product(s) or Data Impacted: MHS Products

Date/Time of Initial Impact: November 15, 2019 0000Z

Impacts on Users and Significance: MHS products are affected.

Date/Time of Expected End: Never

Length of Outage: Ongoing

Details/Specifics of Change:

The Metop-A MHS channel 2 has quickly degraded from Nov 2019 through January 2020. In that time period, the NEDT changed from around 5K to around 20K, and the gain decreased from around ten counts per Kelvin to two counts per Kelvin. As a result, this channel will be declared as failed. Channel 2 L1b data will continue to be processed and made available along with those of other Metop-A MHS channels.

Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov at 301-817-3880 and/or other contacts as necessary

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

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