Topic: Visible calibration update for month of September 2015

Date/Time Issued: September 8, 2015 1850Z

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

Date/Time of Initial Impact: September 8, 2015 1310Z

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

Length of Outage: N/A

Details/Specifics of Change: On September 8, 2015 at approximately 13:10 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 September. These coefficients are intended to be optimal on Sep. 26, in the middle of the two scheduled updates.

Metop-B/1

Ch_1_lo = 0.05467*count - 2.153, count<500.62

Ch_1_hi = 0.1620*count - 55.88, count>500.62

Ch_2_lo = 0.06072*count - 2.452, count<503.00

Ch_2_hi = 0.1789*count - 61.88, count>503.00

Ch_3_lo = 0.03137*count - 1.318, count<500.85

Ch_3_hi = 0.2185*count - 95.04, count>500.85

Metop-A/2

Ch_1_lo = 0.05568*count - 2.251, count<501.01

Ch_1_hi = 0.1645*count - 56.78, count>501.01

Ch_2_lo = 0.06770*count - 2.691, count<500.42

Ch_2_hi = 0.2011*count - 69.43, count>500.42

Ch_3_lo = 0.03362*count - 1.381, count<501.94

Ch_3_hi = 0.2335*count - 101.71, count>501.94

NOAA-18 AVHRR

Ch_1_lo = 0.05868*count - 2.314, count<501.54

Ch_1_hi = 0.1750*count - 60.17, count>501.54

Ch_2_lo = 0.06854*count - 2.700, count<500.40

Ch_2_hi = 0.2057*count - 71.66, count>500.40

NOAA-19 AVHRR

Ch_1_lo = 0.05273*count - 2.050, count<496.43

Ch_1_hi = 0.1556*count - 53.46, count>496.43

Ch_2_lo = 0.06015*count - 2.333, count<500.37

Ch_2_hi = 0.1792*count - 61.86, count>500.37

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

NSS.HRPT.NP.D15251.S1408.E1421.B3392626.GC

NSS.GHRR.NP.D15251.S1220.E1407.B3392526.GC

NSS.LHRR.NP.D15251.S1351.E1402.B3392626.GC

NSS.GHRR.NN.D15251.S1306.E1440.B5308485.GC

NSS.HRPT.NN.D15251.S1307.E1320.B5308484.MO

For M2 & M1 the first orbits processed will be the one running after orbit:

NSS.HRPT.M1.D15251.S0943.E0951.B1542525.GC

NSS.FRAC.M1.D15251.S1138.E1229.B1542626.MM

NSS.HRPT.M2.D15251.S0832.E0844.B4611010.EB

NSS.FRAC.M2.D15251.S1043.E1224.B4611213.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 301-683-3601 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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