Administrative: NOAA-18, 19, MetOp-B/1, & MetOp-C/3 AVHRR, Monthly Visible Calibration Update, Scheduled for May 09, 2023 - Issued: May 09, 2023 1955Z

Subject: Administrative: NOAA-18, 19, MetOp-B/1, & MetOp-C/3 AVHRR, Monthly Visible Calibration Update, Scheduled for May 09, 2023 - Issued: May 09, 2023 1955Z

From: Trusted NESDIS NSOF Sender - NOAA Service Account

Date: 5/9/2023, 3:54 PM

To: espc.notification@noaa.gov

Topic:   Visible calibration update for month of May, 2023

Date/Time Issued:  May 09, 2023 1955Z

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

Date/Time of Initial Impact:  May 09, 2023 12:00 UTC

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

Length of Outage:   N/A

Details/Specifics of Change:

On 9 May 2023 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 May. These coefficients are intended to be optimal on May 27, in the middle of the two scheduled updates.

--------------------------------------------------------------------------------------
Metop-B/1
# Ch_1_lo = 0.05784*count -  2.278, count<500.62
# Ch_1_hi =  0.1714*count -  59.11, count>500.62
# Ch_2_lo = 0.06489*count -  2.620, count<503.00
# Ch_2_hi =  0.1911*count -  66.12, count>503.00
# Ch_3_lo = 0.03315*count -  1.393, count<500.85
# Ch_3_hi =  0.2309*count - 100.44, count>500.85
 --------------------------------------------------------------------------------------
Metop-C/3
# Ch_1_lo = 0.05595*count -  2.259, count<498.68
# Ch_1_hi =  0.1639*count -  56.11, count>498.68
# Ch_2_lo = 0.06483*count -  2.655, count<500.01
# Ch_2_hi =  0.1899*count -  65.21, count>500.01
# Ch_3_lo = 0.03326*count -  1.349, count<498.72
# Ch_3_hi =  0.2340*count - 101.47, count>498.72
--------------------------------------------------------------------------------------
NOAA-18 AVHRR
# Ch_1_lo = 0.06127*count -  2.416, count<501.54
# Ch_1_hi =  0.1827*count -  62.83, count>501.54
# Ch_2_lo = 0.07511*count -  2.959, count<500.40
# Ch_2_hi =  0.2254*count -  78.53, count>500.40
-------------------------------------------------------------------------------------
NOAA-19 AVHRR
# Ch_1_lo = 0.05650*count -  2.196, count<496.43
# Ch_1_hi =  0.1667*count -  57.29, count>496.43
# Ch_2_lo = 0.06827*count -  2.648, count<500.37
# Ch_2_hi =  0.2033*count -  70.20, count>500.37
--------------------------------------------------------------------------------------

The first 1b files produced with the updated CPIDS were:
NSS.HRPT.NN.D23129.S1836.E1845.B9261515.GC
NSS.GHRR.NN.D23129.S1646.E1834.B9261415.GC

NSS.HRPT.NP.D23129.S1616.E1629.B7345151.MO
NSS.GHRR.NP.D23129.S1049.E1235.B7344849.SV

For M3, M1 the first orbits processed will be the one running after orbit:
NSS.HRPT.M1.D23129.S0909.E0918.B5520404.GC
NSS.GHRR.M1.D23129.S1010.E1105.B5520405.SV

NSS.HRPT.M3.D23129.S0819.E0831.B2336161.GC
NSS.GHRR.M3.D23129.S0836.E1018.B2336162.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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