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NOAA-16,17,and 18, AVHRR Instrument, Viscal Updates, Implementation Date 12 September 2006- Issued: Date issued 30 August 2006; time issued(21:25) UTC

*Topic*:
Visible Calibration Coefficient updates for NOAA-16,17,and 18 for the month of September 2006

*Date/Time(UTC) Message Issued:*
30 August 2006 21:25 UTC

*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:*
12 September 2006 Time TBA

*Details/Specifics of Change:*

*The following update of the calibration coefficients are recommended for:

NOAA-16 AVHRR

Ch_1_lo = 0.05462*count - 2.106, count<498.96
Ch_1_hi = 0.1594*count - 54.18, count>498.96

Ch_2_lo = 0.05900*count - 2.229, count<500.16
Ch_2_hi = 0.1738*count - 59.66, count>500.16

NOAA-17 AVHRR

Ch_1_lo = 0.05527*count - 2.212, count<501.12
Ch_1_hi = 0.1623*count - 55.83, count>501.12

Ch_2_lo = 0.06658*count - 2.614, count<500.73
Ch_2_hi = 0.1982*count - 68.62, count>500.73

Ch_3_lo = 0.03207*count - 1.352, count<501.37
Ch_3_hi = 0.2248*count - 98.16, count>501.37

NOAA-18 AVHRR

Ch_1_lo = 0.05198*count - 2.050, count<501.00
Ch_1_hi = 0.1550*count - 53.30, count>501.00

Ch_2_lo = 0.05827*count - 2.296, count<500.00
Ch_2_hi = 0.17485*count - 60.93, count>500.00

on September 12. These coefficients are intended to be optimal on*
September 26, in the middle of the two scheduled updates.

*Contact Person(s) Name/Email/Phone Number for Questions:*
Xiangqian Wu, Ph. D.
Physical Scientist, NOAA/NESDIS/ORA
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
301-457-5247 ext 129
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

--
*******************************************
*
* Emily D. Harrod
* NOAA/NESDIS/OSDPD/IPD
* Product Systems Branch
* Pre-Product Processing Group
* E/SP13, Federal Building #4, room 0318
* 5200 Auth Road
* Suitland, Maryland 20746-4304
* USA
* voice 301-457-5247 ext 117
* fax 301-457-5199
* email Emily.Harrod@noaa.gov
*
*******************************************


ppp@nesdis.noaa.gov

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