Topic:
Visible calibration update for month of September 2009
Date/Time(UTC) Message Issued:
7 September 2009, 1800UTC
Satellite(s) Involved:
NOAA-16, 17, 18, 19, & 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 September 2009, Time TBD UTC
Details/Specifics of Change:
The following update of the calibration coefficients are recommended for NOAA-16/17/18/19, METOP-A/2 on September 8. These coefficients are intended to be optimal on September 26, in the middle of the two scheduled updates.
NOAA-16 AVHRR
Ch_1_lo = 0.05732*count - 2.210, count<498.96
Ch_1_hi = 0.1673*count - 56.86, count>498.96
Ch_2_lo = 0.06279*count - 2.372, count<500.16
Ch_2_hi = 0.1850*count - 63.49, count>500.16
************************************************************************************
NOAA-17 AVHRR
Ch_1_lo = 0.05662*count - 2.266, count<501.12
Ch_1_hi = 0.1662*count - 57.19, count>501.12
Ch_2_lo = 0.06819*count - 2.677, count<500.73
Ch_2_hi = 0.2030*count - 70.27, count>500.73
Ch_3_lo = 0.03321*count - 1.400, count<501.37
Ch_3_hi = 0.2328*count - 101.63, count>501.37
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NOAA-18 AVHRR
Ch_1_lo = 0.05393*count - 2.126, count<501.54
Ch_1_hi = 0.1608*count - 55.29, count>501.54
Ch_2_lo = 0.06198*count - 2.442, count<500.40
Ch_2_hi = 0.1860*count - 64.80, count>500.40
*****************************************************************************
NOAA-19 AVHRR
Ch_1_lo = 0.05118*count - 1.989, count<496.43
Ch_1_hi = 0.1510*count - 51.89, count>496.43
Ch_2_lo = 0.05983*count - 2.320, count<500.37
Ch_2_hi = 0.17821*count - 61.52, count>500.37
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Metop-A/2
Ch_1_lo = 0.05368*count - 2.171, count<501.01
Ch_1_hi = 0.1586*count - 54.75, count>501.01
Ch_2_lo = 0.06345*count - 2.522, count<500.42
Ch_2_hi = 0.1885*count - 65.08, count>500.42
Ch_3_lo = 0.03211*count - 1.320, count<501.94
Ch_3_hi = 0.2231*count - 97.16, count>501.94
*****************************************************************************
Contact Person(s) Name/Email/Phone Number for Questions:
Vince Tabor Vincent.Tabor@noaa.gov 301-817-4552 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