Topic:
Visible calibration update for month of February 2008
Date/Time(UTC) Message Issued:
29 January 2008, 2230 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:
12 February 2008, Time TBD UTC
Details/Specifics of Change:
Following are the AVHRR visible calibration coefficient updates for 12 February 2008. These coefficients are intended to be optimal on February 26, in the middle of the two scheduled updates.
Metop-A/2
Ch_1_lo = 0.05273*count - 2.132, count<501.00
Ch_1_hi = 0.1558*count - 53.78, count>501.00
Ch_2_lo = 0.06074*count - 2.414, count<500.00
Ch_2_hi = 0.1804*count - 62.30, count>500.00
Ch_3_lo = 0.03113*count - 1.279, count<502.00
Ch_3_hi = 0.2162*count - 94.17, count>502.00
**************************************************
NOAA-18 AVHRR
Ch_1_lo = 0.05330*count - 2.102, count<501.00
Ch_1_hi = 0.1589*count - 54.65, count>501.00
Ch_2_lo = 0.06164*count - 2.428, count<500.00
Ch_2_hi = 0.1849*count - 64.44, count>500.00
**************************************************
NOAA-17 AVHRR
Ch_1_lo = 0.05589*count - 2.237, count<501.12
Ch_1_hi = 0.1641*count - 56.46, count>501.12
Ch_2_lo = 0.06726*count - 2.641, count<500.73
Ch_2_hi = 0.2002*count - 69.31, count>500.73
Ch_3_lo = 0.03249*count - 1.370, count<501.37
Ch_3_hi = 0.2277*count - 99.43, count>501.37
**************************************************
NOAA-16 AVHRR
Ch_1_lo = 0.05612*count - 2.164, count<498.96
Ch_1_hi = 0.1638*count - 55.67, count>498.96
Ch_2_lo = 0.06102*count - 2.305, count<500.16
Ch_2_hi = 0.1798*count - 61.71, 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