Topic: Visible calibration update for month of February 2019

Date/Time Issued: February 12, 2019 1810Z

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

Date/Time of Initial Impact: February 12, 2019 15:55Z

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

Length of Outage: N/A

Details/Specifics of Change:

On February 12, 2019 at approximately 15:55Z, 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 February. These coefficients are intended to be optimal on February 26, in the middle of the two scheduled updates.

Metop-B/1

Ch_1_lo = 0.05627*count - 2.216, count<500.62

Ch_1_hi = 0.1667*count - 57.51, count>500.62

Ch_2_lo = 0.06297*count - 2.543, count<503.00

Ch_2_hi = 0.1855*count - 64.17, count>503.00

Ch_3_lo = 0.03251*count - 1.366, count<500.85

Ch_3_hi = 0.2264*count - 98.48, count>500.85

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Metop-A/2

Ch_1_lo = 0.05640*count - 2.280, count<501.01

Ch_1_hi = 0.1667*count - 57.52, count>501.01

Ch_2_lo = 0.07013*count - 2.788, count<500.42

Ch_2_hi = 0.2083*count - 71.93, count>500.42

Ch_3_lo = 0.03449*count - 1.417, count<501.94

Ch_3_hi = 0.2395*count - 104.33, count>501.94

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NOAA-18 AVHRR

Ch_1_lo = 0.06174*count - 2.434, count<501.54

Ch_1_hi = 0.1841*count - 63.31, count>501.54

Ch_2_lo = 0.07291*count - 2.872, count<500.40

Ch_2_hi = 0.2188*count - 76.22, count>500.40

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NOAA-19 AVHRR

Ch_1_lo = 0.05456*count - 2.121, count<496.43

Ch_1_hi = 0.1610*count - 55.33, count>496.43

Ch_2_lo = 0.06396*count - 2.480, count<500.37

Ch_2_hi = 0.1905*count - 65.77, count>500.37

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

NSS.HRPT.NN.D19043.S1657.E1710.B7077373.MO

NSS.GHRR.NN.D19043.S1656.E1830.B7077374.GC

NSS.GHRR.NP.D19043.S1426.E1612.B5161112.GC

NSS.HRPT.NP.D19043.S1613.E1627.B5161212.GC

NSS.LHRR.NP.D19043.S1556.E1608.B5161212.GC

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

NNS.HRPT.M1.D19043.S1300.E1308.B3322828.WI

NSS.FRAC.M1.D19043.S1431.E1523.B3322929.MM

NSS.FRAC.M2.D19043.S1323.E1503.B6391516.SV

NSS.HRPT.M2.D19042.S1900.E1903.B6388686.MO

Contact Person(s) Name/Email/Phone Number for Questions:

Dejiang.Han Dejiang.Han@noaa.gov <mailto:Dejiang.Han@noaa.gov> 301-817-4119 operations support

Xiangqian Wu Xiangqian.Wu@noaa.gov <mailto: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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