Topic:
Warm calibration saturation problem
Date/Time(UTC) Message Issued:
26 March 2008, 1630 UTC
Satellite(s) Involved:
NOAA-18
Instrument(s) Involved:
MHS channel 3 & 4
Product(s) Involved/Affected:
All products; bad calibration and science data
Date/Time(UTC) of Initial Implementation:
23 March 2008 Time 1757 UTC
Details/Specifics of Change:
On 23 March 2008 at approximately 1757 UTC, an anomaly occurred in the NOAA-18 MHS data resulting in a jump in radiometric values rendering channels 3 and 4 unusable until 0640 UTC on 24 March. Unfortunately, the problem was not flagged during the level 1B processing and several passes were processed with erroneous calibration data due to warm target saturation. The Information Processing Division is updating the NOAA-18 MHS gross filter limits to properly detect similar problems in the future. The NSS.MHSX... and NSS.MHSH... level 1B data impacted by the anomaly began with data from ... D08083.S1806.E1956.B1464143... through ...D08084.S0435.E0630.B1464849...
Contact Person(s) Name/Email/Phone Number for Questions:
Dr. Tsan Mo, Tsan.Mo@noaa.gov Renee Tsan.Mo@noaa.gov , 301-763-8136, Ext. 137 instrument scientist
Renee Smith-Dearing, Renee.Smith@noaa.gov, 301-817-3882 spacecraft operations
Web site(s) that contain other relevant information (where applicable):
http://www.osdpd.noaa.gov/PSB/PPP/PPP.html - History of level 1B notices
http://www.ssd.noaa.gov/PS/SATS/messages.html - All user notices
http://www.oso.noaa.gov/poes/index.htm - SOCC polar satellite status
http://www.oso.noaa.gov/goes/index.htm - SOCC geostationary satellite status
http://www.oso.noaa.gov/daily-news/index.asp - SOCC morning reports
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*
* Emily D. Harrod
* NOAA/NESDIS/OSDPD/IPD
* Computer Operations Branch
* Pre-Product Processing Group
* E/SP11, NSOF, room 1460
* 4231 Suitland Road
* Suitland, Maryland 20746-4304
* USA
* voice 301-817-3882
* fax 301-817-3902
* email Emily.Harrod@noaa.gov
*
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