Topic: Visible calibration update for month of June 2018

Date/Time Issued: June 12, 2018 1510Z

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

Date/Time of Initial Impact: June 12, 2018 1259Z

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

Length of Outage: N/A

Details/Specifics of Change:

On June 12, 2018 at approximately 12:59 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 June. These coefficients are intended to be optimal on June 26, in the middle of the two scheduled updates.

Metop-B/1

Ch_1_lo = 0.05612*count - 2.210, count<500.62

Ch_1_hi = 0.1663*count - 57.35, count>500.62

Ch_2_lo = 0.06274*count - 2.533, count<503.00

Ch_2_hi = 0.1848*count - 63.94, count>503.00

Ch_3_lo = 0.03231*count - 1.358, count<500.85

Ch_3_hi = 0.2251*count - 97.89, count>500.85

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Metop-A/2
Ch_1_lo = 0.05631*count - 2.277, count<501.01

Ch_1_hi = 0.1664*count - 57.43, count>501.01

Ch_2_lo = 0.06976*count - 2.773, count<500.42

Ch_2_hi = 0.2072*count - 71.54, count>500.42

Ch_3_lo = 0.03432*count - 1.410, count<501.94

Ch_3_hi = 0.2384*count - 103.84, count>501.94

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NOAA-18 AVHRR

Ch_1_lo = 0.06112*count - 2.410, count<501.54

Ch_1_hi = 0.1822*count - 62.66, count>501.54

Ch_2_lo = 0.07201*count - 2.837, count<500.40

Ch_2_hi = 0.2161*count - 75.28, count>500.40

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NOAA-19 AVHRR

Ch_1_lo = 0.05416*count - 2.105, count<496.43

Ch_1_hi = 0.1598*count - 54.92, count>496.43

Ch_2_lo = 0.06313*count - 2.448, count<500.37

Ch_2_hi = 0.1881*count - 64.92, count>500.37

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

NSS.GHRR.NN.D18163.S0851.E1046.B6731011.WI

NSS.HRPT.NN.D18163.S1417.E1430.B6731313.WI

NSS.HRPT.NP.D18163.S1317.E1329.B4815252.GC

NSS.GHRR.NP.D18163.S1118.E1313.B4815152.GC

NSS.LHRR.NP.D18163.S1303.E1307.B4815252.GC

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

NSS.HRPT.M1.D18163.S0843.E0854.B2974545.GC

NSS.FRAC.M1.D18163.S1125.E1220.B2974647.SV

NSS.FRAC.M2.D18163.S0940.E1120.B6043233.SV

NSS.HRPT.M2.D18163.S0552.E0557.B6041212.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) for applicable information: 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: ESPCOperations at ESPCOperations@noaa.gov at 301-817-3880

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