Subject: Administrative: NOAA-16, 18, 19, & MetOp-A/2, AVHRR, Monthly Visible Calibration Update, 13 December 2011 - Issued: December 13, 2011 1645 UTC
Topic: Visible calibration update for month of December 2011.
Date/Time Issued: December 13, 2011 1645 UTC
Product(s) or Data Impacted: All products from channels 1, 2, and 3a.
Date/Time of Initial Impact: December 13, 2011 1230 UTC
Date/Time of Expected End: Until next update
Length of Outage: TBD
Details/Specifics of Change:
On 13 December 2011 at approximately 12:30 UTC, the following update of the calibration coefficients was implemented in the level 1B processing for NOAA-16/18/19 and MetOp-A/2 for the month of December. These coefficients are intended to be optimal on 27 December, in the middle of the two scheduled updates.
NOAA-16 AVHRR
Ch_1_lo = 0.05912*count - 2.279, count<498.96
Ch_1_hi = 0.1725*count - 58.64, count>498.96
Ch_2_lo = 0.06549*count - 2.474, count<500.16
Ch_2_hi = 0.1929*count - 66.22, count>500.16
NOAA-18 AVHRR
Ch_1_lo = 0.05543*count - 2.185, count<501.54
Ch_1_hi = 0.1653*count - 56.83, count>501.54
Ch_2_lo = 0.06376*count - 2.512, count<500.40
Ch_2_hi = 0.1913*count - 66.66, count>500.40
NOAA-19 AVHRR
Ch_1_lo = 0.05133*count - 1.995, count<496.43
Ch_1_hi = 0.1514*count - 52.05, count>496.43
Ch_2_lo = 0.05781*count - 2.242, count<500.37
Ch_2_hi = 0.1722*count - 59.44, count>500.37
MetOp-A/2
Ch_1_lo = 0.05483*count - 2.217, count<501.01
Ch_1_hi = 0.1620*count - 55.92, count>501.01
Ch_2_lo = 0.06557*count - 2.606, count<500.42
Ch_2_hi = 0.1948*count - 67.25, count>500.42
Ch_3_lo = 0.03278*count - 1.347, count<501.94
Ch_3_hi = 0.2277*count - 99.19, count>501.94
For NL/NN/NP, the first orbits processed were:
NSS.HRPT.NL.D11347.S1216.E1228.B5786868.MI
NSS.GHRR.NL.D11347.S1015.E1211.B5786768.WI
NSS.HRPT.NN.D11347.S1252.E1307.B3382222.EB
NSS.GHRR.NN.D11347.S1241.E1419.B3382223.GC
NSS.LHRR.NP.D11347.S1126.E1138.B1466767.GC
NSS.HRPT.NP.D11347.S1332.E1346.B1466868.GC
NSS.GHRR.NP.D11347.S1144.E1331.B1466768.GC
For MetOp-A/2, the first orbit processed was the one running after orbit:
NCS.FRAC.M2.D11347.S1125.E1215.B2672020.MM
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Web site(s) that contain other relevant information (where applicable):
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Dejiang.Han Dejiang.Han@noaa.gov
Xiangqian Wu Xiangqian.Wu@noaa.gov
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