Administrative: Administrative: NOAA-18, 19, MetOp-A/2 & MetOp-B/1, AVHRR, Monthly Visible Calibration Update, 11 April 2017 - Issued: April 11, 2017 1605Z

Subject: Administrative: Administrative: NOAA-18, 19, MetOp-A/2 & MetOp-B/1, AVHRR, Monthly Visible Calibration Update, 11 April 2017 - Issued: April 11, 2017 1605Z

From: ESPCOperations

Date: 4/11/2017 12:06 PM

To: _NESDIS OSDPD ESPC OUTAGE Notification

Topic: Visible calibration update for month of April 2017

Date/Time Issued: April 11, 2017 1605Z

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

Date/Time of Initial Impact: April 11, 2017 12:38Z

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

Length of Outage: N/A

Details/Specifics of Change:

On April 11, 2017 at approximately 12:38Z, 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 April. These coefficients are intended to be optimal on April 25, in the middle of the two scheduled updates.

Metop-B/1

Ch_1_lo = 0.05561*count - 2.190, count<500.62

Ch_1_hi = 0.1648*count - 56.84, count>500.62

Ch_2_lo = 0.06196*count - 2.502, count<503.00

Ch_2_hi = 0.1825*count - 63.14, count>503.00

Ch_3_lo = 0.03208*count - 1.348, count<500.85

Ch_3_hi = 0.2234*count - 97.19, count>500.85

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Metop-A/2

Ch_1_lo = 0.05604*count - 2.266, count<501.01

Ch_1_hi = 0.1656*count - 57.15, count>501.01

Ch_2_lo = 0.06917*count - 2.749, count<500.42

Ch_2_hi = 0.2054*count - 70.94, count>500.42

Ch_3_lo = 0.03393*count - 1.394, count<501.94

Ch_3_hi = 0.2356*count - 102.64, count>501.94

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NOAA-18 AVHRR

Ch_1_lo = 0.06006*count - 2.368, count<501.54

Ch_1_hi = 0.1791*count - 61.58, count>501.54

Ch_2_lo = 0.07049*count - 2.777, count<500.40

Ch_2_hi = 0.2115*count - 73.70, count>500.40

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NOAA-19 AVHRR

Ch_1_lo = 0.05347*count - 2.079, count<496.43

Ch_1_hi = 0.1578*count - 54.22, count>496.43

Ch_2_lo = 0.06176*count - 2.395, count<500.37

Ch_2_hi = 0.1840*count - 63.51, count>500.37

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

NSS.HRPT.NN.D17101.S1322.E1334.B6128585.MI

NSS.GHRR.NN.D17101.S1131.E1318.B6128485.WI

NSS.LHRR.NP.D17101.S1251.E1255.B4212525.GC

NSS.GHRR.NP.D17101.S1116.E1303.B4212425.GC

NSS.HRPT.NP.D17101.S1304.E1316.B4212525.GC

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

NSS.HRPT.M1.D17101.S0922.E0930.B2367979.GC

NSS.FRAC.M1.D17101.S1116.E1208.B2368080.MM

NSS.FRAC.M2.D17101.S0841.E1024.B5436566.SV

NSS.HRPT.M2.D17101.S0453.E0458.B5434545.MO

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