Topic: Visible calibration update for month of April 2021
Date/Time Issued: April 13, 2021 1550Z
Product(s) or Data Impacted: All products from channels 1, 2, and 3a
Date/Time of Initial Impact: April 13, 2021 12:00Z
Date/Time of Expected End: Until Next Month's Coefficient Update
Length of Outage: N/A
Details/Specifics of Change:
On 13 April 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 April. These coefficients are intended to be optimal on April 27, in the middle of the two scheduled updates.
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Metop-B/1
Ch_1_lo = 0.05723*count - 2.254, count<500.62
Ch_1_hi = 0.1696*count - 58.49, count>500.62
Ch_2_lo = 0.06431*count - 2.597, count<503.00
Ch_2_hi = 0.1894*count - 65.54, count>503.00
Ch_3_lo = 0.03287*count - 1.381, count<500.85
Ch_3_hi = 0.2289*count - 99.57, count>500.85
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Metop-A/2
Ch_1_lo = 0.05730*count - 2.317, count<501.01
Ch_1_hi = 0.1693*count - 58.44, count>501.01
Ch_2_lo = 0.07229*count - 2.873, count<500.42
Ch_2_hi = 0.2147*count - 74.14, count>500.42
Ch_3_lo = 0.03529*count - 1.450, count<501.94
Ch_3_hi = 0.2451*count - 106.76, count>501.94
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Metop-C/3
Ch_1_lo = 0.05509*count - 2.224, count<498.68
Ch_1_hi = 0.1614*count - 55.25, count>498.68
Ch_2_lo = 0.06377*count - 2.612, count<500.01
Ch_2_hi = 0.1868*count - 64.14, count>500.01
Ch_3_lo = 0.03264*count - 1.324, count<498.72
Ch_3_hi = 0.2296*count - 99.57, count>498.72
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NOAA-18 AVHRR
Ch_1_lo = 0.06174*count - 2.434, count<501.54
Ch_1_hi = 0.1841*count - 63.31, count>501.54
Ch_2_lo = 0.07514*count - 2.960, count<500.40
Ch_2_hi = 0.2254*count - 78.55, count>500.40
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NOAA-19 AVHRR
Ch_1_lo = 0.05555*count - 2.159, count<496.43
Ch_1_hi = 0.1639*count - 56.33, count>496.43
Ch_2_lo = 0.06614*count - 2.565, count<500.37
Ch_2_hi = 0.1970*count - 68.01, count>500.37
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The first 1b files produced with the updated CPIDS were:
NSS.HRPT.NN.D21103.S1407.E1421.B8193838.WI
NSS.GHRR.NN.D21103.S0834.E1029.B8193536.WI
NSS.HRPT.NP.D21103.S1304.E1318.B6277676.WI
NSS.GHRR.NP.D21103.S1110.E1303.B6277576.WI
For M3, M2 & M1 the first orbits processed will be the one running after orbit:
NSS.HRPT.M1.D21103.S0952.E0959.B4446464.GC
NSS.FRAC.M1.D21103.S1006.E1057.B4446464.MM
NSS.HRPT.M2.D21103.S0504.E0508.B7514848.MO
NSS.FRAC.M2.D21103.S0851.E1032.B7515051.SV
NSS.HRPT.M3.D21103.S0904.E0913.B1262121.GC
NSS.FRAC.M3.D21103.S0919.E1101.B1262122.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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