Topic: MetOp-B/1,& MetOp-C/3 AVHRR,Monthly Visible calibration update for month of February 2026
Date/Time Issued: February 10 2026 1942Z Product(s) or Data Impacted: All products from channels 1, 2, and 3a Date/Time of Initial Impact: February 10 2026 12:00Z Date/Time of Expected End: Until Next Month's Coefficient Update Length of Outage: N/A Details/Specifics: On 10 February 2026 at approximately 12:00 UTC, the following update of the calibration coefficients was implemented in the level 1B processing for MetOp-B/1, and MetOp-C/3 for the month of February. These coefficients are intended to be optimal on February 24, in the middle of the two scheduled updates. -------------------------------------------------------------------------------------- Metop-B/1 # Ch_1_lo = 0.05819*count - 2.292, count<500.62 # Ch_1_hi = 0.1724*count - 59.47, count>500.62 # Ch_2_lo = 0.06645*count - 2.683, count<503.00 # Ch_2_hi = 0.1958*count - 67.72, count>503.00 # Ch_3_lo = 0.03352*count - 1.408, count<500.85 # Ch_3_hi = 0.2334*count - 101.54, count>500.85 -------------------------------------------------------------------------------------- Metop-C/3 # Ch_1_lo = 0.05630*count - 2.273, count<498.68 # Ch_1_hi = 0.1650*count - 56.46, count>498.68 # Ch_2_lo = 0.06779*count - 2.776, count<500.01 # Ch_2_hi = 0.1986*count - 68.19, count>500.01 # Ch_3_lo = 0.03367*count - 1.366, count<498.72 # Ch_3_hi = 0.2369*count - 102.70, count>498.72 ------------------------------------------------------------------------------------- For M3, M1 the first orbits processed will be the one running after orbit: NSS.HRPT.M1.D26041.S0829.E0839.B6952424.GC NSS.GHRR.M1.D26041.S1026.E1117.B6952525.MM NSS.HRPT.M3.D26041.S0906.E0916.B3768282.GC NSS.GHRR.M3.D26041.S0922.E1103.B3768283.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): https://www.ospo.noaa.gov/operations/messages.html - All user notices https://www.ospo.noaa.gov/operations/poes/status.html - SOCC polar satellite status
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