Topic:
Visible calibration update for month of October 2008
Date/Time(UTC) Message Issued:
6 October 2008, 1515 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 October 2008, Time TBD UTC
Details/Specifics of Change:
The following update of the calibration coefficients for MetOp-2/A, NOAA-18, 17, &16 are recommended for October 14. These coefficients are intended to be optimal on October 28, in the middle of the two scheduled updates.
*****************************************************************
Metop-A/2
Ch_1_lo = 0.05303*count - 2.144, count<501.00
Ch_1_hi = 0.1567*count - 54.08, count>501.00
Ch_2_lo = 0.06292*count - 2.501, count<500.00
Ch_2_hi = 0.1869*count - 64.53, count>500.00
Ch_3_lo = 0.03163*count - 1.300, count<502.00
Ch_3_hi = 0.2197*count - 95.69, count>502.00
*******************************************************************
NOAA-18 AVHRR
Ch_1_lo = 0.05343*count - 2.107, count<501.00
Ch_1_hi = 0.1593*count - 54.79, count>501.00
Ch_2_lo = 0.06130*count - 2.415, count<500.00
Ch_2_hi = 0.1839*count - 64.09, count>500.00
********************************************************************
NOAA-17 AVHRR
Ch_1_lo = 0.05615*count - 2.247, count<501.12
Ch_1_hi = 0.1649*count - 56.72, count>501.12
Ch_2_lo = 0.06752*count - 2.651, count<500.73
Ch_2_hi = 0.2010*count - 69.59, count>500.73
Ch_3_lo = 0.03278*count - 1.382, count<501.37
Ch_3_hi = 0.2298*count - 100.31, count>501.37
*********************************************************************
NOAA-16 AVHRR
Ch_1_lo = 0.05662*count - 2.183, count<498.96
Ch_1_hi = 0.1653*count - 56.17, count>498.96
Ch_2_lo = 0.06176*count - 2.333, count<500.16
Ch_2_hi = 0.1820*count - 62.45, 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
http://www.oso.noaa.gov/poes/index.htm - SOCC polar satellite status