Topic: NOAA-19 SBUV Channel 12 340nm Wavelength Test

Date/Time Issued: September 6, 2018 1830Z

Product(s) or Data Impacted: SBUV Product

Date/Time of Initial Impact: September 6, 2018 1647Z

Impacts on Users and Significance: SBUV products will be impacted

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Date/Time of Expected End: September 6, 2018 1828Z

Length of Outage: ~1.75 hours

Details/Specifics of Change: The NOAA-19 SBUV/2 grating drive performance improved significantly since implementing the M-bM-^@M-^\giant stepM-bM-^@M-^] function daily starting July 2. Orbital average grating position errors at Chan. 11 and Chan. 12 dropped to approximately +1.5 GPOS. In order to test whether the instrument has improved sufficiently, channel 12 will be set to 340nm (GPOS = -976) for one orbit. This test will provide the original reflectivity wavelength for ozone retrieval, and will be run for ~1.75 hours before returning the SBUV to its original configuration.

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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