Topic:
Visible calibration update for month of December 2009
Date/Time(UTC) Message Issued:
7 December 2009, 2000UTC
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 December 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 8 December. These coefficients are intended to be optimal on 26 December, in the middle of the two scheduled updates.
NOAA-16 AVHRR
Ch_1_lo = 0.05751*count - 2.217, count<498.96
Ch_1_hi = 0.1679*count - 57.05, count>498.96
Ch_2_lo = 0.06308*count - 2.383, count<500.16
Ch_2_hi = 0.1858*count - 63.78, count>500.16
*******************************************************************************
NOAA-17 AVHRR
Ch_1_lo = 0.05669*count - 2.269, count<501.12
Ch_1_hi = 0.1665*count - 57.26, count>501.12
Ch_2_lo = 0.06837*count - 2.684, count<500.73
Ch_2_hi = 0.2035*count - 70.47, count>500.73
Ch_3_lo = 0.03331*count - 1.404, count<501.37
Ch_3_hi = 0.2335*count - 101.96, count>501.37
**********************************************************************************
NOAA-18 AVHRR
Ch_1_lo = 0.05405*count - 2.131, count<501.54
Ch_1_hi = 0.1611*count - 55.42, count>501.54
Ch_2_lo = 0.06212*count - 2.447, count<500.40
Ch_2_hi = 0.1864*count - 64.94, count>500.40
****************************************************************************************
NOAA-19 AVHRR
Ch_1_lo = 0.05035*count - 1.957, count<496.43
Ch_1_hi = 0.1486*count - 51.06, count>496.43
Ch_2_lo = 0.05766*count - 2.236, count<500.37
Ch_2_hi = 0.17176*count - 59.30, count>500.37
******************************************************************************************
Metop-A/2
Ch_1_lo = 0.05378*count - 2.175, count<501.01
Ch_1_hi = 0.1589*count - 54.85, count>501.01
Ch_2_lo = 0.06356*count - 2.526, count<500.42
Ch_2_hi = 0.1888*count - 65.19, count>500.42
Ch_3_lo = 0.03222*count - 1.324, count<501.94
Ch_3_hi = 0.2238*count - 97.49, count>501.94
********************************************************************************************
Contact Person(s) Name/Email/Phone Number for Questions:
Dejiang.Han Dejiang.Han@noaa.gov 301-817-4119 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