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Administrative: NOAA-18, 19, MetOp-B/1, & MetOp-C/3 AVHRR, Monthly Visible Calibration Update, December 13, 2022 - Issued: December 13, 2022 1959Z

Subject: Administrative: NOAA-18, 19, MetOp-B/1, & MetOp-C/3 AVHRR, Monthly Visible Calibration Update, December 13, 2022 - Issued: December 13, 2022 1959Z

From: Trusted NESDIS NSOF Sender - NOAA Service Account

Date: 12/13/2022, 2:59 PM

To: espc.notification@noaa.gov

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 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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