Date/Time Issued: January 14 2025 1946Z
Product(s) or Data Impacted: All products from channels 1, 2, and 3a
Date/Time Initial Impact: January 14 2025 12:00 UTC
Date/Time of Expected End: Until Next Month's Coefficient Update
Length of Event: N/A
Details/Specifics: On 14 January 2025 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 January. These coefficients are intended to be optimal on January 28, in the middle of the two scheduled updates.
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Metop-B/1
# Ch_1_lo = 0.05808*count - 2.288, count<500.62
# Ch_1_hi = 0.1721*count - 59.36, count>500.62
# Ch_2_lo = 0.06585*count - 2.659, count<503.00
# Ch_2_hi = 0.1940*count - 67.10, count>503.00
# Ch_3_lo = 0.03349*count - 1.407, count<500.85
# Ch_3_hi = 0.2333*count - 101.46, count>500.85
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Metop-C/3
# Ch_1_lo = 0.05634*count - 2.275, count<498.68
# Ch_1_hi = 0.1651*count - 56.50, count>498.68
# Ch_2_lo = 0.06723*count - 2.753, count<500.01
# Ch_2_hi = 0.1970*count - 67.63, count>500.01
# Ch_3_lo = 0.03358*count - 1.362, count<498.72
# Ch_3_hi = 0.2362*count - 102.43, count>498.72
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NOAA-18 AVHRR
# Ch_1_lo = 0.06119*count - 2.413, count<501.54
# Ch_1_hi = 0.1824*count - 62.74, count>501.54
# Ch_2_lo = 0.07578*count - 2.986, count<500.40
# Ch_2_hi = 0.2274*count - 79.23, count>500.40
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NOAA-19 AVHRR
# Ch_1_lo = 0.05642*count - 2.193, count<496.43
# Ch_1_hi = 0.1665*count - 57.21, count>496.43
# Ch_2_lo = 0.06783*count - 2.631, count<500.37
# Ch_2_hi = 0.2021*count - 69.75, count>500.37
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The first 1b files produced with the updated CPIDS were:
NSS.HRPT.NN.D25014.S1116.E1120.B0131212.SV
NSS.GHRR.NN.D25014.S0928.E1120.B0131112.SV
NSS.HRPT.NP.D25014.S1058.E1106.B8214747.SV
NSS.GHRR.NP.D25014.S1045.E1235.B8214748.SV
For M3, M1 the first orbits processed will be the one running after orbit:
NSS.HRPT.M1.D25014.S0819.E0830.B6395555.GC
NSS.GHRR.M1.D25014.S1017.E1107.B6395656.MM
NSS.HRPT.M3.D25014.S0917.E0927.B3211313.GC
NSS.GHRR.M3.D25014.S0933.E1113.B3211314.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
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