Topic:
Visible calibration update for month of April 2008
Date/Time(UTC) Message Issued:
3 April 2008, 2030 UTC
Satellite(s) Involved:
NOAA-16, 17, 18, & MetOp-2/A
Instrument(s) Involved:
AVHRR
Product(s) Involved/Affected:
All Products from channels 1, 2, and 3a.
Date/Time(UTC) of Initial Implementation:
8 April 2008, Time TBD UTC
Details/Specifics of Change:
Followings are the updates of AVHRR visible calibration coefficients for April 2008. The updates are recommended on April 8. These coefficients are intended to be optimal on April 26, in the middle of the two scheduled updates.
Metop-A/2
Ch_1_lo = 0.05269*count - 2.131, count<501.00
Ch_1_hi = 0.1557*count - 53.74, count>501.00
Ch_2_lo = 0.06218*count - 2.472, count<500.00
Ch_2_hi = 0.1847*count - 63.77, count>500.00
Ch_3_lo = 0.03088*count - 1.269, count<502.00
Ch_3_hi = 0.2145*count - 93.41, count>502.00
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NOAA-18 AVHRR
Ch_1_lo = 0.05334*count - 2.103, count<501.00
Ch_1_hi = 0.1590*count - 54.69, count>501.00
Ch_2_lo = 0.06116*count - 2.409, count<500.00
Ch_2_hi = 0.1835*count - 63.94, count>500.00
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NOAA-17 AVHRR
Ch_1_lo = 0.05598*count - 2.240, count<501.12
Ch_1_hi = 0.1643*count - 56.54, count>501.12
Ch_2_lo = 0.06738*count - 2.645, count<500.73
Ch_2_hi = 0.2006*count - 69.44, count>500.73
Ch_3_lo = 0.03260*count - 1.374, count<501.37
Ch_3_hi = 0.2285*count - 99.77, count>501.37
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NOAA-16 AVHRR
Ch_1_lo = 0.05624*count - 2.168, count<498.96
Ch_1_hi = 0.1642*count - 55.79, count>498.96
Ch_2_lo = 0.06120*count - 2.312, count<500.16
Ch_2_hi = 0.1803*count - 61.89, count>500.16
Contact Person(s) Name/Email/Phone Number for Questions:
Emily Harrod Emily.Harrod@noaa.gov 301-817-3882 operations support
Xiangqian Wu Xiangqian.Wu@noaa.gov 301-763-8136 x 138 instrument scientist
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
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*
* Emily D. Harrod
* NOAA/NESDIS/OSDPD/IPD
* Computer Operations Branch
* Pre-Product Processing Group
* E/SP11, NSOF, room 1460
* 5200 Auth Road
* Suitland, Maryland 20746-4304
* USA
* voice 301-817-3882
* fax 301-817-4436
* email Emily.Harrod@noaa.gov
*
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