Topic:   Visible calibration update for month of October 2020

Date/Time Issued:  October 14 2020 0320Z

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

Date/Time of Initial Impact:  October 13 2020 1200Z

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

Length of Outage:   N/A

Details/Specifics of Change:

On 13 October 2020 at approximately 1200Z, the following update of the calibration coefficients was implemented in the level 1B processing for NOAA-18, NOAA-19, MetOp-A/2, MetOp-B/1, and MetOp-C/3 for the month of October. These coefficients are intended to be optimal on October 27, in the middle of the two scheduled updates.

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Metop-B/1

 Ch_1_lo = 0.05697*count -  2.244, count<500.62

 Ch_1_hi =  0.1688*count -  58.22, count>500.62

 Ch_2_lo = 0.06412*count -  2.589, count<503.00

 Ch_2_hi =  0.1889*count -  65.35, count>503.00

 Ch_3_lo = 0.03282*count -  1.379, count<500.85

 Ch_3_hi =  0.2286*count -  99.44, count>500.85

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Metop-A/2

 Ch_1_lo = 0.05708*count -  2.308, count<501.01

 Ch_1_hi =  0.1687*count -  58.22, count>501.01

 Ch_2_lo = 0.07180*count -  2.854, count<500.42

 Ch_2_hi =  0.2133*count -  73.64, count>500.42

 Ch_3_lo = 0.03502*count -  1.439, count<501.94

 Ch_3_hi =  0.2432*count - 105.95, count>501.94

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Metop-C/3

 Ch_1_lo = 0.05475*count -  2.210, count<498.68

 Ch_1_hi =  0.1604*count -  54.90, count>498.68

 Ch_2_lo = 0.06323*count -  2.589, count<500.01

 Ch_2_hi =  0.1852*count -  63.60, count>500.01

 Ch_3_lo = 0.03232*count -  1.311, count<498.72

 Ch_3_hi =  0.2274*count -  98.59, count>498.72

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NOAA-18 AVHRR

 Ch_1_lo = 0.06316*count -  2.490, count<501.54

 Ch_1_hi =  0.1883*count -  64.76, count>501.54

 Ch_2_lo = 0.07461*count -  2.939, count<500.40

 Ch_2_hi =  0.2239*count -  78.00, count>500.40

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NOAA-19 AVHRR

 Ch_1_lo = 0.05532*count -  2.150, count<496.43

 Ch_1_hi =  0.1632*count -  56.09, count>496.43

 Ch_2_lo = 0.06562*count -  2.545, count<500.37

 Ch_2_hi =  0.1955*count -  67.48, count>500.37

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

NSS.HRPT.NN.D20287.S1452.E1501.B7936969.WI

NSS.GHRR.NN.D20287.S1300.E1452.B7936869.WI

NSS.HRPT.NP.D20287.S1146.E1202.B6020606.WI

NSS.GHRR.NP.D20287.S0953.E1146.B6020506.WI

For M3, M2 & M1 the first orbits processed will be the one running after orbit:

NSS.HRPT.M1.D20287.S0916.E0925.B4187878.GC

NSS.FRAC.M1.D20287.S1017.E1113.B4187879.SV

NSS.HRPT.M2.D20287.S0428.E0433.B7256262.MO

NSS.FRAC.M2.D20287.S0806.E0959.B7256465.SV

NSS.HRPT.M3.D20287.S0827.E0838.B1003535.GC

NSS.FRAC.M3.D20287.S0843.E1025.B1003536.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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