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Administrative, NOAA-16, 18, 19, & MetOp-2/A, AVHRR, Monthly Visible Calibration Update, 12 April 2011 - Issued: 12 April 2011 1630 UTC

Topic:
Visible calibration update for month of April 2011
Date/Time(UTC) Message Issued:
12 April 2011, 1630 UTC

Satellite(s) Involved:
NOAA-16, 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:
12 April 2011, Time 1545 UTC

Details/Specifics of Change:
On 12 April 2011 at approximately 15:45 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 April. These coefficients are intended to be optimal on 26 April, in the middle of the two scheduled updates.

NOAA-16 AVHRR
Ch_1_lo = 0.05857*count - 2.258, count<498.96
Ch_1_hi = 0.1709*count - 58.10, count>498.96
Ch_2_lo = 0.06466*count - 2.442, count<500.16
Ch_2_hi = 0.1905*count - 65.38, count>500.16

NOAA-18 AVHRR
Ch_1_lo = 0.05498*count - 2.168, count<501.54
Ch_1_hi = 0.1639*count - 56.38, count>501.54
Ch_2_lo = 0.06325*count - 2.492, count<500.40
Ch_2_hi = 0.1898*count - 66.13, count>500.40

NOAA-19 AVHRR
Ch_1_lo = 0.05140*count - 1.998, count<496.43
Ch_1_hi = 0.1516*count - 52.12, count>496.43
Ch_2_lo = 0.05793*count - 2.247, count<500.37
Ch_2_hi = 0.1726*count - 59.57, count>500.37

Metop-A/2
Ch_1_lo = 0.05453*count - 2.205, count<501.01
Ch_1_hi = 0.1611*count - 55.61, count>501.01
Ch_2_lo = 0.06488*count - 2.579, count<500.42
Ch_2_hi = 0.1927*count - 66.54, count>500.42
Ch_3_lo = 0.03257*count - 1.339, count<501.94
Ch_3_hi = 0.2262*count - 98.55, count>501.94

For NL/NN/NP, the first orbits processed were:
NSS.GHRR.NL.D11102.S1359.E1533.B5441011.GC
NSS.HRPT.NL.D11102.S1728.E1742.B5441212.EB

NSS.GHRR.NN.D11102.S1120.E1306.B3036566.GC
NSS.HRPT.NN.D11102.S1515.E1529.B3036767.CF

NSS.LHRR.NP.D11102.S1012.E1018.B1121010.GC
NSS.HRPT.NP.D11102.S1423.E1436.B1121313.GC
NSS.GHRR.NP.D11102.S1225.E1421.B1121213.GC

For M2, the first orbit processed was the one running after orbit:
NCS.FRAC.M2.D11102.S1233.E1414.B2324041.SV

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


ppp@nesdis.noaa.gov

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