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*Topic: *Visible calibration update for month of January 2009 *Date/Time(UTC) Message Issued:* 5 January 2009, 1730 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:* 13 January 2009, Time TBD UTC *Details/Specifics of Change:*The following update of the AVHRR VIS/NIR channel calibration coefficients for MetOp-2/A, NOAA-18, 17, &16 are recommended for January 13, 2009. These coefficients are intended to be optimal on January 27, in the middle of two scheduled updates.
Metop-A/2 Ch_1_lo = 0.05310*count - 2.147, count<501.01 Ch_1_hi = 0.1569*count - 54.16, count>501.01 Ch_2_lo = 0.06329*count - 2.516, count<500.42 Ch_2_hi = 0.1880*count - 64.92, count>500.42 Ch_3_lo = 0.03182*count - 1.307, count<501.94 Ch_3_hi = 0.2210*count - 96.26, count>501.94 ************************************************** NOAA-18 AVHRR Ch_1_lo = 0.05357*count - 2.112, count<501.54 Ch_1_hi = 0.1597*count - 54.93, count>501.54 Ch_2_lo = 0.06149*count - 2.422, count<500.40 Ch_2_hi = 0.1845*count - 64.28, count>500.40 **************************************************** NOAA-17 AVHRR Ch_1_lo = 0.05620*count - 2.249, count<501.12 Ch_1_hi = 0.1650*count - 56.76, count>501.12 Ch_2_lo = 0.06763*count - 2.655, count<500.73 Ch_2_hi = 0.2013*count - 69.70, count>500.73 Ch_3_lo = 0.03287*count - 1.386, count<501.37 Ch_3_hi = 0.2304*count - 100.61, count>501.37 ************************************************** NOAA-16 AVHRR Ch_1_lo = 0.05681*count - 2.190, count<498.96 Ch_1_hi = 0.1658*count - 56.35, count>498.96 Ch_2_lo = 0.06204*count - 2.343, count<500.16 Ch_2_hi = 0.1828*count - 62.73, count>500.16 *Contact Person(s) Name/Email/Phone Number for Questions:*Emily Harrod Emily.Harrod@xxxxxxxx <mailto:Emily.Harrod@xxxxxxxx> 301-817-3882 operations support Xiangqian Wu Xiangqian.Wu@xxxxxxxx <mailto:Xiangqian.Wu@xxxxxxxx> 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
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