Administrative: NOAA-18, 19, MetOp-A/2 & MetOp-B/1, AVHRR, Monthly Visible Calibration Update, 10 July2018 - Issued: July 10, 2018 1515Z

Topic: Visible calibration update for month of July 2018

Date/Time Issued: July 10, 2018 1515Z

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

Date/Time of Initial Impact: July 10, 2018 1233Z

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

Length of Outage: N/A

Details/Specifics of Change: On July 10, 2018 at approximately 12:33 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 July. These coefficients are intended to be optimal on July 28, in the middle of the two scheduled updates.

Metop-B/1

Ch_1_lo = 0.05616*count - 2.212, count<500.62

Ch_1_hi = 0.1664*count - 57.39, count>500.62

Ch_2_lo = 0.06281*count - 2.536, count<503.00

Ch_2_hi = 0.1850*count - 64.01, count>503.00

Ch_3_lo = 0.03233*count - 1.359, count<500.85

Ch_3_hi = 0.2252*count - 97.95, count>500.85

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Metop-A/2

Ch_1_lo = 0.05633*count - 2.278, count<501.01

Ch_1_hi = 0.1664*count - 57.45, count>501.01

Ch_2_lo = 0.06984*count - 2.776, count<500.42

Ch_2_hi = 0.2074*count - 71.63, count>500.42

Ch_3_lo = 0.03434*count - 1.411, count<501.94

Ch_3_hi = 0.2385*count - 103.90, count>501.94

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NOAA-18 AVHRR

Ch_1_lo = 0.06120*count - 2.413, count<501.54

Ch_1_hi = 0.1825*count - 62.75, count>501.54

Ch_2_lo = 0.07212*count - 2.842, count<500.40

Ch_2_hi = 0.2164*count - 75.40, count>500.40

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NOAA-19 AVHRR

Ch_1_lo = 0.05424*count - 2.108, count<496.43

Ch_1_hi = 0.1600*count - 55.00, count>496.43

Ch_2_lo = 0.06323*count - 2.452, count<500.37

Ch_2_hi = 0.1884*count - 65.03, count>500.37

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

NSS.HRPT.NN.D18191.S1351.E1405.B6770808.WI

NSS.GHRR.NN.D18191.S1015.E1210.B6770607.WI

NSS.LHRR.NP.D18191.S1228.E1240.B4854747.GC

NSS.GHRR.NP.D18191.S1112.E1253.B4854647.GC

NSS.HRPT.NP.D18191.S1255.E1306.B4854747.GC

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

NSS.HRPT.M1.D18191.S0904.E0914.B3014343.GC

NSS.FRAC.M1.D18191.S1100.E1151.B3014444.MM

NSS.HRPT.M2.D18191.S0613.E0617.B6081010.MO

NSS.FRAC.M2.D18191.S1000.E1141.B6083031.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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