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NOAA-16,17, and 18, AVHRR Instrument, Viscal Updates, Implementation Date 15 November 2006- Issued: Date issued 15 November 2006; time issued 20:45 UTC

*Topic*:
Visible Calibration coefficient updates for November 2006

*Date/Time(UTC) Message Issued:*
15 November 2006

*Satellite(s) Involved:*
NOAA-16,17, and 18

*Instrument(s) Involved:*
AVHRR Instrument

*Product(s) Involved/Affected:*
All Products using channels 1 and 2 on NOAA-16

All Products using channels 1,2, and 3 on NOAA-17

All Products using channels 1 and 2 on NOAA-18

*Date/Time(UTC) of Initial Implementation:*
14 November 2006 20:10 UTC

*Details/Specifics of Change:*

*The following update of the calibration coefficients were operationally implemented ( at approx. 20:10 UTC) for the given satellites on 14 November 2006. These coefficients are intended to be optimal on 28 November 2006, in the middle of the two scheduled updates.

NOAA-16 AVHRR

Ch_1_lo = 0.05484*count - 2.114, count<498.96
Ch_1_hi = 0.1601*count - 54.40, count>498.96

Ch_2_lo = 0.05949*count - 2.247, count<500.16
Ch_2_hi = 0.1753*count - 60.16, count>500.16

NOAA-17 AVHRR

Ch_1_lo = 0.05532*count - 2.214, count<501.12
Ch_1_hi = 0.1624*count - 55.88, count>501.12

Ch_2_lo = 0.06676*count - 2.621, count<500.73
Ch_2_hi = 0.1987*count - 68.81, count>500.73

Ch_3_lo = 0.03211*count - 1.353, count<501.37
Ch_3_hi = 0.2251*count - 98.26, count>501.37

NOAA-18 AVHRR

Ch_1_lo = 0.05169*count - 2.038, count<501.00
Ch_1_hi = 0.1541*count - 53.00, count>501.00

Ch_2_lo = 0.06015*count - 2.370, count<500.00
Ch_2_hi = 0.1805*count - 62.89, count>500.00

**
The first orbits processed are listed below.

NSS.HRPT.NN.D06318.S1953.E2005.B0766262.MO

NSS.HRPT.NL.D06318.S1954.E2009.B3168585.WI

NSS.HRPT.NN.D06318.S2002.E2014.B0766262.GC

NSS.GHRR.NL.D06318.S1833.E1954.B3168485.WI

NSS.GHRR.NN.D06318.S1801.E1956.B0766062.GC
*

.

*Contact Person(s) Name/Email/Phone Number for Questions:*

Xiangqian Wu, Ph. D.
Physical Scientist, Sensor Physics Branch
Satellite Meteorology and Climatology Division
Center for Satellite Applications and Research (STAR)
National Environmental Satellite, Data, and Information Service (NESDIS)
National Oceanic and Atmospheric Administration (NOAA)
E/RA2, Office 7214, 5200 Auth Rd.
Camp Springs, MD 20746-4304
Phone: 301-763-8136 ext. 138
FAX: 301-763-8580
Xiangqian.Wu@noaa.gov

Cecil A. Paris,PMP
Physical Scientist
301-817 3881
cecil.paris@noaa.gov

*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/poesstatus/ - SOCC polar satellites status
http://www.oso.noaa.gov/daily-news/index.htm - SOCC morning reports

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ppp@nesdis.noaa.gov

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