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Administrative: NOAA-18, 19, MetOp-B/1, & MetOp-C/3 AVHRR, Monthly Visible Calibration Update, 09 July 2024 - Issued: 09 July 2024 2023 UTC

Topic: Visible calibration update for month of July 2024

Date/Time Issued: July 09 2024 2023 UTC

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

Date/Time of Initial Impact: July 09 2024 12:00 UTC

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

Length of Outage: N/A

Details/Specifics of Change:

On 09 July 2024 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-B/1, and MetOp-C/3 for the month of July. These coefficients are intended to be optimal on July 27, in the middle of the two scheduled updates.

--------------------------------------------------------------------------------------
Metop-B/1
#Ch_1_lo = 0.05803*count -  2.286, count<500.62
#Ch_1_hi =  0.1719*count -  59.31, count>500.62
#Ch_2_lo = 0.06551*count -  2.645, count<503.00
#Ch_2_hi =  0.1930*count -  66.76, count>503.00
#Ch_3_lo = 0.03326*count -  1.398, count<500.85
#Ch_3_hi =  0.2317*count - 100.77, count>500.85
--------------------------------------------------------------------------------------
Metop-C/3
#Ch_1_lo = 0.05624*count -  2.271, count<498.68
#Ch_1_hi =  0.1648*count -  56.40, count>498.68
#Ch_2_lo = 0.06666*count -  2.730, count<500.01
#Ch_2_hi =  0.1953*count -  67.05, count>500.01
#Ch_3_lo = 0.03344*count -  1.357, count<498.72
#Ch_3_hi =  0.2352*count - 102.00, count>498.72
--------------------------------------------------------------------------------------
NOAA-18 AVHRR
#Ch_1_lo = 0.06129*count -  2.417, count<501.54
#Ch_1_hi =  0.1827*count -  62.84, count>501.54
#Ch_2_lo = 0.07561*count -  2.979, count<500.40
#Ch_2_hi =  0.2269*count -  79.05, count>500.40
-------------------------------------------------------------------------------------
NOAA-19 AVHRR
#Ch_1_lo = 0.05661*count -  2.201, count<496.43
#Ch_1_hi =  0.1670*count -  57.41, count>496.43
#Ch_2_lo = 0.06813*count -  2.642, count<500.37
#Ch_2_hi =  0.2029*count -  70.06, count>500.37
--------------------------------------------------------------------------------------

The first 1b files produced with the updated CPIDS were:
NSS.HRPT.NN.D24191.S1100.E1108.B9864141.SV
NSS.GHRR.NN.D24191.S0905.E1057.B9864041.SV

NSS.HRPT.NP.D24191.S1136.E1144.B7947878.SV
NSS.GHRR.NP.D24191.S0941.E1132.B7947778.SV

For M3, M1 the first orbits processed will be the one running after orbit:
NSS.HRPT.M1.D24191.S0831.E0840.B6127070.GC
NSS.GHRR.M1.D24191.S1028.E1119.B6127171.MM

NSS.HRPT.M3.D24191.S0927.E0936.B2942828.GC
NSS.GHRR.M3.D24191.S0942.E1123.B2942829.SV

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

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ppp@nesdis.noaa.gov

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