Administrative: NOAA-18, 19, MetOp-A/2 & MetOp-B/1, AVHRR,

*Topic:* Visible calibration update for month of October 2015

*Date/Time Issued:* October 13, 2015 1740Z

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

*D**ate/Time of Initial Impact:* October 13, 2015 1310 UTC

*Date/Time of Expected End:* Until Next Month's Coefficient Update

*Length of Outage: * N/A

*Details/Specifics of Change:*

On October 13, 2015 at approximately 12:44 UTC, the following update of
the calibration coefficients was implemented in the level 1B processing
for NOAA-18, NOAA-19, MetOp-A/2 and MetOp-B/1 for the month of October.
These coefficients are intended to be optimal on Oct. 27, in the middle
of the two scheduled updates.

Metop-B/1
Ch_1_lo = 0.05470*count - 2.154, count<500.62
Ch_1_hi = 0.1621*count - 55.90, count>500.62
Ch_2_lo = 0.06088*count - 2.458, count<503.00
Ch_2_hi = 0.1793*count - 62.04, count>503.00
Ch_3_lo = 0.03141*count - 1.320, count<500.85
Ch_3_hi = 0.2188*count - 95.17, count>500.85
Metop-A/2
Ch_1_lo = 0.05569*count - 2.252, count<501.01
Ch_1_hi = 0.1646*count - 56.80, count>501.01
Ch_2_lo = 0.06786*count - 2.697, count<500.42
Ch_2_hi = 0.2015*count - 69.60, count>500.42
Ch_3_lo = 0.03363*count - 1.382, count<501.94
Ch_3_hi = 0.2336*count - 101.76, count>501.94
NOAA-18 AVHRR
Ch_1_lo = 0.05875*count - 2.317, count<501.54
Ch_1_hi = 0.1752*count - 60.24, count>501.54
Ch_2_lo = 0.06865*count - 2.705, count<500.40
Ch_2_hi = 0.2060*count - 71.77, count>500.40
NOAA-19 AVHRR
Ch_1_lo = 0.05278*count - 2.052, count<496.43
Ch_1_hi = 0.1557*count - 53.52, count>496.43
Ch_2_lo = 0.06031*count - 2.339, count<500.37
Ch_2_hi = 0.1797*count - 62.02, count>500.37

The first 1b files produced with the updated CPIDS were:

NSS.HRPT.NN.D15286.S1307.E1319.B5357878.MO
NSS.GHRR.NN.D15286.S1305.E1439.B5357879.GC

NSS.LHRR.NP.D15286.S1222.E1226.B3441919.GC
NSS.GHRR.NP.D15286.S1228.E1415.B3441920.GC
NSS.HRPT.NP.D15286.S1445.E1455.B3441919.CF

For M2 & M1 the first orbits processed will be the one running after orbit:
NCS.HRPT.M2.D15286.S0449.E0454.B4660606.MO
NCS.FRAC.M2.D15286.S1018.E____.B46609__.SV

NCS.FRAC.M1.D15286.S1114.E____.B15923__.MM
NCS.HRPT.M1.D15286.S0918.E0927.B1592222.GC
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
301-683-3601 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

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