*Topic:
*Visible calibration update for month of April 2009
*Date/Time(UTC) Message Issued:*
13 April 2009, 2045 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:*
14 April 2009, Time TBD UTC
*Details/Specifics of Change:*
The following update of the calibration coefficients are recommended for
Metop-A/2, NOAA-18/17/16 on April 14. These coefficients are intended to be
optimal on April 28, in the middle of the two scheduled updates.
*******************************************************************
Metop-A/2
Ch_1_lo = 0.05327*count - 2.154, count<501.01
Ch_1_hi = 0.1574*count - 54.33, count>501.01
Ch_2_lo = 0.06343*count - 2.521, count<500.42
Ch_2_hi = 0.1884*count - 65.05, count>500.42
Ch_3_lo = 0.03197*count - 1.314, count<501.94
Ch_3_hi = 0.2220*count - 96.71, count>501.94
**************************************************************
NOAA-18 AVHRR
Ch_1_lo = 0.05357*count - 2.112, count<501.54
Ch_1_hi = 0.1597*count - 54.93, count>501.54
Ch_2_lo = 0.06128*count - 2.414, count<500.40
Ch_2_hi = 0.1839*count - 64.06, count>500.40
**********************************************************
NOAA-17 AVHRR
Ch_1_lo = 0.05629*count - 2.253, count<501.12
Ch_1_hi = 0.1653*count - 56.85, count>501.12
Ch_2_lo = 0.06777*count - 2.661, count<500.73
Ch_2_hi = 0.2017*count - 69.84, count>500.73
Ch_3_lo = 0.03298*count - 1.390, count<501.37
Ch_3_hi = 0.2312*count - 100.93, count>501.37
*********************************************************
NOAA-16 AVHRR
Ch_1_lo = 0.05700*count - 2.198, count<498.96
Ch_1_hi = 0.1664*count - 56.54, count>498.96
Ch_2_lo = 0.06232*count - 2.354, count<500.16
Ch_2_hi = 0.1836*count - 63.02, count>500.16
*Contact Person(s) Name/Email/Phone Number for Questions:
*Emily Harrod Emily.Harrod@xxxxxxxx <mailto:Emily.Harrod@xxxxxxxx>
301-817-3882 operations support
Xiangqian Wu Xiangqian.Wu@xxxxxxxx <mailto:Xiangqian.Wu@xxxxxxxx>
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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