    Topic:   Visible calibration update for month of December 2022

    Date/Time Issued:  December 13 2022 1959Z

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

    Date/Time of Initial Impact:  December 13 2022 12:00 UTC

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

    Length of Outage:   N/A

    Details/Specifics of Change:

    On 13 December 2022 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 December. These coefficients are intended to be optimal on December 27, in the middle of the two scheduled updates.

    --------------------------------------------------------------------------------------
    Metop-B/1
    # Ch_1_lo = 0.05774*count -  2.274, count<500.62
    # Ch_1_hi =  0.1711*count -  59.01, count>500.62
    # Ch_2_lo = 0.06467*count -  2.612, count<503.00
    # Ch_2_hi =  0.1905*count -  65.91, count>503.00
    # Ch_3_lo = 0.03309*count -  1.390, count<500.85
    # Ch_3_hi =  0.2304*count - 100.24, count>500.85
     --------------------------------------------------------------------------------------
    Metop-C/3
    # Ch_1_lo = 0.05575*count -  2.251, count<498.68
    # Ch_1_hi =  0.1633*count -  55.90, count>498.68
    # Ch_2_lo = 0.06436*count -  2.636, count<500.01
    # Ch_2_hi =  0.1886*count -  64.74, count>500.01
    # Ch_3_lo = 0.03310*count -  1.343, count<498.72
    # Ch_3_hi =  0.2329*count - 100.98, count>498.72
    --------------------------------------------------------------------------------------
    NOAA-18 AVHRR
    # Ch_1_lo = 0.06135*count -  2.419, count<501.54
    # Ch_1_hi =  0.1829*count -  62.90, count>501.54
    # Ch_2_lo = 0.07522*count -  2.963, count<500.40
    # Ch_2_hi =  0.2257*count -  78.64, count>500.40
    -------------------------------------------------------------------------------------
    NOAA-19 AVHRR
    # Ch_1_lo = 0.05635*count -  2.190, count<496.43
    # Ch_1_hi =  0.1662*count -  57.14, count>496.43
    # Ch_2_lo = 0.06796*count -  2.636, count<500.37
    # Ch_2_hi =  0.2024*count -  69.89, count>500.37
    --------------------------------------------------------------------------------------

    The first 1b files produced with the updated CPIDS were:
    NSS.HRPT.NN.D22347.S1454.E1503.B9053737.WI
    NSS.GHRR.NN.D22347.S1259.E1454.B9053637.WI

    NSS.HRPT.NP.D22347.S1203.E1215.B7137373.WI
    NSS.GHRR.NP.D22347.S1000.E1155.B7137273.WI

    For M3, M1 the first orbits processed will be the one running after orbit:
    NSS.HRPT.M1.D22347.S0952.E1000.B5311616.GC
    NSS.GHRR.M1.D22347.S1006.E1056.B5311616.MM

    NSS.HRPT.M3.D22347.S0902.E0912.B2127373.GC
    NSS.GHRR.M3.D22347.S0917.E1059.B2127374.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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