Update #1: This is a reminder for today and tomorrow's GOES-17 (GOES-West) ABI Cooling Timeline Mode 3 Engineering Test from 1800 to 2000 UTC.

Topic: GOES-17 (GOES-West) ABI Cooling Timeline Mode 3 Engineering Test

Date/Time Issued: February 19, 2019 1327 UTC

Product(s) or Data Impacted: GOES-17 ABI Imagery and Level 2 Products

Date/Time of Initial Impact: February 19, 2020 1800Z

Date/Time of Expected End: February 20, 2020 2000Z

Length of Event: Two 2-hour events

Details/Specifics of Change: On Wednesday February 19, 2020 and Thursday February 20, 2020 NESDIS will conduct two hours (1800-2000 UTC each day) of a GOES-17 ABI cooling timeline engineering test using Mode-3. This test is planned to investigate the ground system throughput for L2 algorithms and is not intended to be a validation of the effectiveness of the cooling on imagery or ABI L2 products.M-B The test will be a variation of Mode 3 (M-bM-^@M-^\Flex ModeM-bM-^@M-^] uploaded as timelineID=3) where GOES-17 ABI will generate a single full disk once per 15 minutes and generate two alternating mesoscale domain sectors each minute. The CONUS domain will not be scanned during the timeline as those periods will be used for cooling.

Full Disk product availability will occur every 15 minutes with timestamps of HH:15, HH:30, HH:45, and HH:00 (with HH:15 representing data collected from HH:00 through HH:15 and HH:30 representing data collected from HH:15 through HH:30, etc.) for each hour from 1800-2000 UTC on February 19 and 20.M-B Mesoscale domain sector availability will alternate each minute between the two mesos (e.g. HH:00 for MESO1, HH:01 for MESO2, HH:02 for MESO1, HH:03 for MESO2).M-B There will be some minor timing differences on the order of 1s of seconds between February 19 and 20, but otherwise the data collection will be the same.M-B GOES-17 ABI will return to nominal Mode 6 operations including the ability to make two mesoscale domain sector requests at 2000 UTC on each of the two days.M-B INR and radiometric calibration will be maintained throughout the data outage. The data availability from each distribution service is provided below in a format of M-bM-^@M-^\Distribution Service: Data AvailabilityM-bM-^@M-^].M-BM-B

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AWIPS (Advanced Weather Interactive Processing System):M-BM-B

- 15 minute SCMI (Sectorized Cloud and Moisture Imagery) for Full Disk

- 2 minute SCMI for mesoscale domain sector M-bM-^@M-^\MESO1M-bM-^@M-^] centered over California and M-bM-^@M-^\MESO2M-bM-^@M-^] centered near Alaska

- 15 minute SCMI for Alaska sector (subset from Full Disk)

- 15 minute SCMI for Hawaii sector (subset from Full Disk)

GRB (GOES Rebroadcast):M-BM-B

- 15 minute L1b Radiances Full Disk

- 2 minute L1b Radiances for mesoscale domain sector M-bM-^@M-^\MESO1M-bM-^@M-^] centered over California and M-bM-^@M-^\MESO2M-bM-^@M-^] centered near Alaska

PDA (Product & Distribution Access System):

- 15 minute L1b Radiances Full Disk

- 2 minute L1b Radiances for mesoscale domain sector M-bM-^@M-^\MESO1M-bM-^@M-^] centered over California and M-bM-^@M-^\MESO2M-bM-^@M-^] centered near Alaska

- 15 minute Level 2 CMI Full Disk

- 2 minute Level 2 CMI for mesoscale domain sector M-bM-^@M-^\MESO1M-bM-^@M-^] centered over California and M-bM-^@M-^\MESO2M-bM-^@M-^] centered near Alaska

- All other Level 2 (non-CMI) Full Disk and mesoscale domain sector M-bM-^@M-^\MESO1M-bM-^@M-^] (centered over California) and M-bM-^@M-^\MESO2M-bM-^@M-^] (centered near Alaska) products will be produced but may have varied degradation for the duration of the test and up to 30 minutes *after* nominal Mode 6 resumes.

HRIT/EMWIN (High Resolution Information Transmission / Emergency Managers Weather Information Network):M-B 30 minute Level 2 CMI Full Disk will be broadcast at HH:11 and HH:41. The mesoscale domain sectors M-bM-^@M-^\MESO1M-bM-^@M-^] (centered over California) and M-bM-^@M-^\MESO2M-bM-^@M-^] (centered near Alaska) data will not be broadcast and all Level 2 non-CMI products will not be broadcast during the defined test period.

GNC-A (GEONETCast-Americas):M-B GNC-A broadcast of 15 minute Level 2 CMI Full Disk imagery will be distributed at HH:01, HH:11, HH:31, and HH:41.M-B All Level 2 non-CMI products will not be broadcast during the defined test period.

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This test will be postponed in the event of Critical Weather Day declaration for the test period. The test will slip one business day at a time until it does not conflict with CWD declaration. These test activities are specific to ABI.M-B All other GOES-17 spacecraft and instrument (EXIS, GLM, Magnetometer, SEISS, SUVI) activities will remain nominal for the duration of these tests.M-B

Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov or 301-817-3880

Web Site(s) for applicable information:

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