Topic:
NOAA-18 Reduced Gyro Test
UPDATE: The NOAA-18 Reduced Gyro Test. The test has been canceled due to the declared critical weather days, covering the proposed test period. Please adjust your issue time accordingly.
Date/Time(UTC) Message Issued:
March 22, 2011, 1430 UTC
Product(s) Involved/Affected:
All data and products from NOAA-18 (AVHRR, AMSU-A, AMSU-B, HIRS, MHS, SBUV)
Date/Time(UTC) of Initial Implementation:
March 23, 2011, Time 11:39 UTC
Date/Time(UTC) of Expected End:
March 24, 2011, Time 18:09 UTC
Length of Outage:
31 hours and 30 minutes
Details/Specifics of Change:
From 23 Mar 2011 at 11:39 UTC (orbit 30083) to 24 Mar 2011 at 18:09 UTC (orbit 30101), NOAA-18 will be placed into the Reduced Gyro Mode for a test. Products may be impacted with a slightly larger than normal attitude disturbances during this period. The performance of NOAA-18 instrument L1b data is expected to be similar to the counterpart of NOAA-15, which has been operated in the Reduced Gyro Mode since March 17, 2010.
The test will be ended on March 24th on REV 30101 AOS 17:55:20 UTC, and the spacecraft reconfigured for normal operation. The spacecraft will be commanded back to nominal mode on REV 30103 at 21:27:30.
Products that use NOAA-18 that will be affected:
ATOVS Polar Soundings
Radiation Budget
Fire Identification Mapping and Monitoring Algorithm (FIMMA) for Hazard Mapping system (HMS) input
CLAVR-X
SST and Coastwatch
Microwave Surface and Precipitation Products (MSPPS)
Microwave Integrated Retrieval System (MIRS)
Blended TPW
Ozone: SBUV/2
Ozone: TOAST
Ensemble Tropical Rainfall Potential (eTRaP)
Global Vegetation Index Products (GVI)
AVHRR Winds
Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov at 301-817-3880
Web Site(s) for applicable information: N/A