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Administrative, NOAA-16, 17, 18, 19, & MetOp-2/A, AVHRR, Monthly Visible Calibration Update, 8 December 2009 - Issued: 8 December 2009 1800 UTC

*Topic: **
*Visible calibration update for month of December 2009

*Date/Time(UTC) Message Issued:*
8 December 2009, 1800 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:*
8 December 2009, Time 1248 UTC

*Details/Specifics of Change:*

On 8 December 2009 at approximately 1248 UTC the AVHRR visible calibration coefficients for the month of December were updated in the level 1B processing.
For NL/NM/NN/NP, the first orbits processed were:
NSS.HRPT.NL.D09342.S1511.E1524.B4749393.GC
NSS.GHRR.NL.D09342.S1336.E1510.B4749293.GC

NSS.GHRR.NM.D09342.S0740.E0935.B3875455.WI
NSS.HRPT.NM.D09342.S1452.E1506.B3875858.WI

NSS.GHRR.NN.D09342.S0930.E1117.B2345253.GC
NSS.HRPT.NN.D09342.S1259.E1313.B2345454.GC

NSS.HRPT.NP.D09342.S1324.E1338.B0430202.GC
NSS.GHRR.NP.D09342.S1136.E1323.B0430102.GC
NSS.LHRR.NP.D09342.S1307.E1319.B0430202.GC

For M2, the first orbit processed was:

NCS.FRAC.M2.D09342.S0812.E0953.B1627677.SV

******************* Original Message **********************

The following update of the calibration coefficients are recommended for NOAA-16/17/18/19, METOP-A/2 on 8 December. These coefficients are intended to be optimal on 26 December, in the middle of the two scheduled updates.

NOAA-16 AVHRR

Ch_1_lo = 0.05751*count - 2.217, count<498.96
Ch_1_hi = 0.1679*count - 57.05, count>498.96

Ch_2_lo = 0.06308*count - 2.383, count<500.16
Ch_2_hi = 0.1858*count - 63.78, count>500.16

*******************************************************************************

NOAA-17 AVHRR
Ch_1_lo = 0.05669*count - 2.269, count<501.12
Ch_1_hi = 0.1665*count - 57.26, count>501.12
Ch_2_lo = 0.06837*count - 2.684, count<500.73
Ch_2_hi = 0.2035*count - 70.47, count>500.73

Ch_3_lo = 0.03331*count - 1.404, count<501.37
Ch_3_hi = 0.2335*count - 101.96, count>501.37

**********************************************************************************

NOAA-18 AVHRR
Ch_1_lo = 0.05405*count - 2.131, count<501.54
Ch_1_hi = 0.1611*count - 55.42, count>501.54
Ch_2_lo = 0.06212*count - 2.447, count<500.40
Ch_2_hi = 0.1864*count - 64.94, count>500.40

****************************************************************************************

NOAA-19 AVHRR
Ch_1_lo = 0.05035*count - 1.957, count<496.43
Ch_1_hi = 0.1486*count - 51.06, count>496.43

Ch_2_lo = 0.05766*count - 2.236, count<500.37
Ch_2_hi = 0.17176*count - 59.30, count>500.37

******************************************************************************************

Metop-A/2
Ch_1_lo = 0.05378*count - 2.175, count<501.01
Ch_1_hi = 0.1589*count - 54.85, count>501.01
Ch_2_lo = 0.06356*count - 2.526, count<500.42
Ch_2_hi = 0.1888*count - 65.19, count>500.42
Ch_3_lo = 0.03222*count - 1.324, count<501.94
Ch_3_hi = 0.2238*count - 97.49, count>501.94

********************************************************************************************

*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
http://www.oso.noaa.gov/poes/index.htm - SOCC polar satellite status


ppp@nesdis.noaa.gov

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