Administrative: NOAA-16, 18, 19, & MetOp-A/2, AVHRR, Monthly Visible Calibration Update, 9 August 2011 - Issued: August 9, 2011 1405 UTC

Topic: Visible calibration update for month of August 2011.

Date/Time Issued: August 9, 2011 1405 UTC

Product(s) or Data Impacted: All products from channels 1, 2, and 3a.

Date/Time of Initial Impact: August 9, 2011 1213 UTC

Date/Time of Expected End: Until next update

Length of Outage: TBD

Details/Specifics of Change:
On 9 August 2011 at approximately 12:13 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 August. These coefficients are intended to be optimal on 27 August, in the middle of the two scheduled updates.

NOAA-16 AVHRR
Ch_1_lo = 0.05884*count - 2.269, count<498.96
Ch_1_hi = 0.1717*count - 58.37, count>498.96
Ch_2_lo = 0.06507*count - 2.458, count<500.16
Ch_2_hi = 0.1917*count - 65.80, count>500.16

NOAA-18 AVHRR
Ch_1_lo = 0.05521*count - 2.177, count<501.54
Ch_1_hi = 0.1646*count - 56.61, count>501.54
Ch_2_lo = 0.06350*count - 2.502, count<500.40
Ch_2_hi = 0.1905*count - 66.38, count>500.40

NOAA-19 AVHRR

Ch_1_lo = 0.05132*count - 1.995, count<496.43
Ch_1_hi = 0.1514*count - 52.04, count>496.43
Ch_2_lo = 0.05802*count - 2.250, count<500.37
Ch_2_hi = 0.1728*count - 59.66, count>500.37

MetOp-A/2
Ch_1_lo = 0.05461*count - 2.208, count<501.01
Ch_1_hi = 0.1614*count - 55.69, count>501.01
Ch_2_lo = 0.06504*count - 2.585, count<500.42
Ch_2_hi = 0.1932*count - 66.71, count>500.42
Ch_3_lo = 0.03266*count - 1.342, count<501.94
Ch_3_hi = 0.2269*count - 98.82, count>501.94

For NL/NN/NP, the first orbits processed were:
NSS.HRPT.NL.D11221.S1207.E1221.B5608989.WI
NSS.GHRR.NL.D11221.S1012.E1207.B5608889.WI

NSS.HRPT.NN.D11221.S1200.E1213.B3204444.MO
NSS.GHRR.NN.D11221.S1207.E1333.B3204445.GC

NSS.GHRR.NP.D11221.S0842.E1024.B1288889.GC
NSS.LHRR.NP.D11221.S0958.E1010.B1288989.GC
NSS.HRPT.NP.D11221.S1206.E1219.B1289090.GC

For MetOp-A/2, the first orbit processed was the one running after orbit:
NCS.FRAC.M2.D11221.S1036.E1132.B2492930.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
http://www.oso.noaa.gov/poes/index.htm - SOCC polar satellite status

Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov at 301-817-3880 and/or other contacts as necessary