Topic:
Visible calibration update for month of June 2009
Date/Time(UTC) Message Issued:
2 June 2009, 2015 UTC
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:
9 June 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 June 9. These coefficients are intended to be optimal on June 27, in the middle of the two scheduled updates.
NOAA-19 AVHRR
Ch_1_lo = 0.05171*count - 2.010, count < 496.43
Ch_1_hi= 0.1526*count - 52.43 > 496.43
Ch_2_lo= 0.05509*count – 2.137 < 500.37
Ch_2_hi= 0.16410*count – 56.65 > 500.37
*************************************************
NOAA-18 AVHRR
Ch_1_lo = 0.05374*count - 2.119, count<501.54
Ch_1_hi = 0.1602*count - 55.10, count>501.54
Ch_2_lo = 0.06190*count - 2.439, count<500.40
Ch_2_hi = 0.1857*count - 64.72, count>500.40
*************************************************
NOAA-17 AVHRR
Ch_1_lo = 0.05641*count - 2.258, count<501.12
Ch_1_hi = 0.1656*count - 56.98, count>501.12
Ch_2_lo = 0.06797*count - 2.669, count<500.73
Ch_2_hi = 0.2023*count - 70.05, count>500.73
Ch_3_lo = 0.03305*count - 1.393, count<501.37
Ch_3_hi = 0.2317*count - 101.14, count>501.37
************************************************
NOAA-16 AVHRR
Ch_1_lo = 0.05713*count - 2.203, count<498.96
Ch_1_hi = 0.1667*count - 56.67, count>498.96
Ch_2_lo = 0.06251*count - 2.361, count<500.16
Ch_2_hi = 0.1842*count - 63.20, count>500.16
************************************************
Metop-A/2
Ch_1_lo = 0.05334*count - 2.157, count<501.01
Ch_1_hi = 0.1576*count - 54.40, count>501.01
Ch_2_lo = 0.06357*count - 2.527, count<500.42
Ch_2_hi = 0.1888*count - 65.20, count>500.42
Ch_3_lo = 0.03212*count - 1.320, count<501.94
Ch_3_hi = 0.2231*count - 97.18, count>501.94
*************************************************
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