Topic: Visible calibration update for month of August 2021

Date/Time Issued: August 10, 2021 1750Z

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

Date/Time of Initial Impact: August 10, 2021 1200Z

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

Length of Outage: N/A

Details/Specifics of Change: On August 10, 2021 at approximately 12:00 UTC, 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 August. These coefficients are intended to be optimal on August 28, in the middle of the two scheduled updates.

 

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Metop-B/1

Ch_1_lo = 0.05732*count -  2.258, count<500.62

Ch_1_hi =  0.1698*count -  58.58, count>500.62

Ch_2_lo = 0.06435*count -  2.598, count<503.00

Ch_2_hi =  0.1896*count -  65.58, count>503.00

Ch_3_lo = 0.03290*count -  1.382, count<500.85

Ch_3_hi =  0.2291*count -  99.67, count>500.85

 --------------------------------------------------------------------------------------

Metop-A/2

Ch_1_lo = 0.05747*count -  2.324, count<501.01

Ch_1_hi =  0.1698*count -  58.62, count>501.01

Ch_2_lo = 0.07261*count -  2.886, count<500.42

Ch_2_hi =  0.2157*count -  74.47, count>500.42

Ch_3_lo = 0.03539*count -  1.454, count<501.94

Ch_3_hi =  0.2458*count - 107.07, count>501.94

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Metop-C/3

Ch_1_lo = 0.05506*count -  2.223, count<498.68

Ch_1_hi =  0.1613*count -  55.21, count>498.68

Ch_2_lo = 0.06351*count -  2.601, count<500.01

Ch_2_hi =  0.1861*count -  63.88, count>500.01

Ch_3_lo = 0.03269*count -  1.326, count<498.72

Ch_3_hi =  0.2300*count -  99.73, count>498.72

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NOAA-18 AVHRR

Ch_1_lo = 0.06168*count -  2.432, count<501.54

Ch_1_hi =  0.1839*count -  63.25, count>501.54

Ch_2_lo = 0.07524*count -  2.964, count<500.40

Ch_2_hi =  0.2258*count -  78.66, count>500.40

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NOAA-19 AVHRR

Ch_1_lo = 0.05571*count -  2.165, count<496.43

Ch_1_hi =  0.1643*count -  56.49, count>496.43

Ch_2_lo = 0.06649*count -  2.579, count<500.37

Ch_2_hi =  0.1981*count -  68.37, count>500.37

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

NSS.HRPT.NN.D21222.S1406.E1414.B8361818.MI

NSS.GHRR.NN.D21222.S1353.E1540.B8361819.WI

 

NSS.HRPT.NP.D21222.S1312.E1327.B6445656.WI

NSS.GHRR.NP.D21222.S1119.E1312.B6445556.WI

 

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

NSS.HRPT.M1.D21222.S0848.E0858.B4615454.GC

NSS.FRAC.M1.D21222.S1045.E1136.B4615555.MM

 

NSS.HRPT.M2.D21222.S0359.E0405.B7683838.MO

NSS.FRAC.M2.D21222.S0928.E1110.B7684142.SV

 

NSS.HRPT.M3.D21222.S0942.E0951.B1431212.GC

NSS.FRAC.M3.D21222.S0816.E0958.B1431112.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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