Topic:
Visible calibration update for month of March 2008
Date/Time(UTC) Message Issued:
27 February 2008, 1320 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:
11 March 2008, Time TBD UTC
Details/Specifics of Change:
Followings are the AVHRR calibration coefficients to be updated on March 11, 2008. These coefficients are intended to be optimal on March 25, in the middle of the two scheduled updates.
---------------------------------------------------------
Metop-A/2
Ch_1_lo = 0.05239*count - 2.118, count<501.00
Ch_1_hi = 0.1548*count - 53.43, count>501.00
Ch_2_lo = 0.06133*count - 2.438, count<500.00
Ch_2_hi = 0.1821*count - 62.90, count>500.00
Ch_3_lo = 0.03097*count - 1.273, count<502.00
Ch_3_hi = 0.2151*count - 93.71, count>502.00
-------------------------------------------------------------
NOAA-18 AVHRR
Ch_1_lo = 0.05332*count - 2.102, count<501.00
Ch_1_hi = 0.1590*count - 54.67, count>501.00
Ch_2_lo = 0.06140*count - 2.419, count<500.00
Ch_2_hi = 0.1842*count - 64.19, count>500.00
---------------------------------------------------------
NOAA-17 AVHRR
Ch_1_lo = 0.05594*count - 2.239, count<501.12
Ch_1_hi = 0.1642*count - 56.51, count>501.12
Ch_2_lo = 0.06730*count - 2.642, count<500.73
Ch_2_hi = 0.2003*count - 69.36, count>500.73
Ch_3_lo = 0.03251*count - 1.371, count<501.37
Ch_3_hi = 0.2279*count - 99.50, count>501.37
-------------------------------------------------------
NOAA-16 AVHRR
Ch_1_lo = 0.05618*count - 2.166, count<498.96
Ch_1_hi = 0.1640*count - 55.72, count>498.96
Ch_2_lo = 0.06111*count - 2.308, count<500.16
Ch_2_hi = 0.1800*count - 61.79, 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