Topic:
Visible calibration update for month of August 2008
Date/Time(UTC) Message Issued:
12 August 2008, 1530 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 August 2008, Time 1314 UTC
Details/Specifics of Change:
On 12 August, the planned AVHRR visible calibration file updates occurred around 1314Z First data to processed were: For NL/NM/NN, the first orbits processed will be:
NSS.GHRR.NL.D08225.S1115.E1257.B4067273.GC
NSS.HRPT.NL.D08225.S1439.E1452.B4067474.GC
NSS.HRPT.NM.D08225.S0801.E0815.B3187979.EB
NSS.GHRR.NM.D08225.S0444.E0631.B3187879.GC
NSS.LHRR.NM.D08225.S0708.E0712.B3187979.GC
NSS.HRPT.NN.D08225.S1225.E1239.B1664141.EB
NSS.LHRR.NN.D08225.S1124.E1130.B1664040.GC
NSS.GHRR.NN.D08225.S1346.E1533.B1664243.GC
For M2, the first orbit processed will be the one running after orbit:
NCS.FRAC.M2.D08225.S0946.E1127.B0941516.SV
The following update of the calibration coefficients for MetOp-A/NOAA-18/17/16 were performed on August 12. These coefficients are intended to be optimal on August 26, in the middle of the two scheduled updates.
Metop-A/2
Ch_1_lo = 0.05295*count - 2.141, count<501.00
Ch_1_hi = 0.1565*count - 54.00, count>501.00
Ch_2_lo = 0.06269*count - 2.492, count<500.00
Ch_2_hi = 0.1862*count - 64.29, count>500.00
Ch_3_lo = 0.03159*count - 1.298, count<502.00
Ch_3_hi = 0.2194*count - 95.57, count>502.00
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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 = 0.06085*count - 2.397, count<500.00
Ch_2_hi = 0.1826*count - 63.61, count>500.00
************************************************************************
NOAA-17 AVHRR
Ch_1_lo = 0.05608*count - 2.244, count<501.12
Ch_1_hi = 0.1646*count - 56.64, count>501.12
Ch_2_lo = 0.06737*count - 2.645, count<500.73
Ch_2_hi = 0.2005*count - 69.43, count>500.73
Ch_3_lo = 0.03274*count - 1.380, count<501.37
Ch_3_hi = 0.2295*count - 100.19, count>501.37
**********************************************************************
NOAA-16 AVHRR
Ch_1_lo = 0.05649*count - 2.178, count<498.96
Ch_1_hi = 0.1649*count - 56.04, count>498.96
Ch_2_lo = 0.06157*count - 2.326, count<500.16
Ch_2_hi = 0.1814*count - 62.26, 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