Administrative:NOAA-16, 18, 19, & MetOp-A/2, AVHRR, Monthly Visible Calibration Update, 10 May 2011 - Issued: May 10, 2011 1405 UTC

Topic: Visible calibration update for month of May 2011.

Date/Time Issued: May 10, 2011 1405 UTC

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

Date/Time of Initial Impact: May 10, 2011 1201 UTC

Date/Time of Expected End: Until next update

Length of Outage: TBD

Details/Specifics of Change:

On 10 May 2011 at
approximately 12:01
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 May.
These coefficients are intended to be optimal on 28 May, in the
middle of the
two scheduled updates.

NOAA-16 AVHRR
Ch_1_lo = 0.05864*count - 2.261, count<498.96
Ch_1_hi = 0.1712*count - 58.17, count>498.96
Ch_2_lo = 0.06477*count - 2.446, count<500.16
Ch_2_hi = 0.1908*count - 65.49, count>500.16

NOAA-18 AVHRR
Ch_1_lo = 0.05508*count - 2.172, count<501.54
Ch_1_hi = 0.1642*count - 56.47, count>501.54
Ch_2_lo = 0.06337*count - 2.496, count<500.40
Ch_2_hi = 0.1901*count - 66.25, count>500.40

NOAA-19 AVHRR
Ch_1_lo = 0.05138*count - 1.997, count<496.43
Ch_1_hi = 0.1516*count - 52.10, count>496.43
Ch_2_lo = 0.05798*count - 2.249, count<500.37
Ch_2_hi = 0.1727*count - 59.62, count>500.37

MetOp-A/2
Ch_1_lo = 0.05458*count - 2.207, count<501.01
Ch_1_hi = 0.1613*count - 55.66, count>501.01
Ch_2_lo = 0.06492*count - 2.580, count<500.42
Ch_2_hi = 0.1928*count - 66.58, count>500.42
Ch_3_lo = 0.03259*count - 1.339, count<501.94
Ch_3_hi = 0.2263*count - 98.59, count>501.94

For NL/NN/NP, the first orbits processed were:
NSS.GHRR.NL.D11130.S0949.E1144.B5480304.WI
NSS.HRPT.NL.D11130.S1145.E1159.B5480404.WI

NSS.HRPT.NN.D11130.S1134.E1148.B3076060.MO
NSS.GHRR.NN.D11130.S0957.E1131.B3075960.GC

NSS.HRPT.NP.D11130.S1251.E1306.B1160707.GC
NSS.GHRR.NP.D11130.S1104.E1251.B1160607.GC
NSS.LHRR.NP.D11130.S1234.E1246.B1160707.GC

For MetOp-A/2, the first orbit processed was the one running after orbit:
NCS.FRAC.M2.D11130.S0752.E0934.B2363536.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