Topic: Visible calibration update for month of May 2018

Date/Time Issued: May 08, 2018 2333 UTC

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

Date/Time of Initial Impact: May 08, 2018 1224 UTC

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

Length of Outage: N/A

Details/Specifics of Change:

On May 08, 2018 at approximately 12:24 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 May. These coefficients are intended to be optimal on May 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 - 57.36, count>500.62

Ch_2_lo = 0.06256*count - 2.526, count<503.00

Ch_2_hi = 0.1843*count - 63.76, count>503.00

Ch_3_lo = 0.03234*count - 1.359, count<500.85

Ch_3_hi = 0.2252*count - 97.97, count>500.85

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 = 0.06975*count - 2.773, count<500.42

Ch_2_hi = 0.2072*count - 71.54, count>500.42

Ch_3_lo = 0.03431*count - 1.410, count<501.94

Ch_3_hi = 0.2383*count - 103.81, count>501.94

NOAA-18 AVHRR

Ch_1_lo = 0.06104*count - 2.407, count<501.54

Ch_1_hi = 0.1820*count - 62.58, count>501.54

Ch_2_lo = 0.07190*count - 2.833, count<500.40

Ch_2_hi = 0.2157*count - 75.17, count>500.40

NOAA-19 AVHRR

Ch_1_lo = 0.05410*count - 2.103, count<496.43

Ch_1_hi = 0.1596*count - 54.86, count>496.43

Ch_2_lo = 0.06302*count - 2.444, count<500.37

Ch_2_hi = 0.1877*count - 64.80, count>500.37

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

NSS.HRPT.NP.D18128.S1319.E1331.B4765858.GC
NSS.GHRR.NP.D18128.S1121.E1316.B4765758.GC
NSS.LHRR.NP.D18128.S1306.E1309.B4765858.GC

NSS.HRPT.NN.D18128.S1600.E1609.B6682020.GC

NSS.GHRR.NN.D18128.S1047.E1241.B6681718.WI

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

NSS.HRPT.M1.D18128.S0909.E0918.B2924848.GC

 NSS.FRAC.M1.D18128.S1104.E1155.B2924949.MM

 NSS.HRPT.M2.D18128.S0618.E0623.B5991515.MO

 NSS.FRAC.M2.D18128.S0825.E1006.B5993435.SV

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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