Topic: Visible calibration update for month of February 2024

Date/Time Issued: February 13, 2024 2034Z

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

Date/Time of Initial Impact: February 13 2024 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 February 2024 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 February. These coefficients are intended to be optimal on February 27, in the middle of the two scheduled updates.

--------------------------------------------------------------------------------------

Metop-B/1

# Ch_1_lo = 0.05795*count - 2.282, count<500.62

# Ch_1_hi = 0.1717*count - 59.22, count>500.62

# Ch_2_lo = 0.06523*count - 2.634, count<503.00

# Ch_2_hi = 0.1922*count - 66.48, count>503.00

# Ch_3_lo = 0.03322*count - 1.396, count<500.85

# Ch_3_hi = 0.2314*count - 100.65, count>500.85

--------------------------------------------------------------------------------------

Metop-C/3

# Ch_1_lo = 0.05610*count - 2.265, count<498.68

# Ch_1_hi = 0.1644*count - 56.26, count>498.68

# Ch_2_lo = 0.06614*count - 2.709, count<500.01

# Ch_2_hi = 0.1938*count - 66.53, count>500.01

# Ch_3_lo = 0.03339*count - 1.355, count<498.72

# Ch_3_hi = 0.2349*count - 101.87, count>498.72

--------------------------------------------------------------------------------------

NOAA-18 AVHRR

# Ch_1_lo = 0.06134*count - 2.418, count<501.54

# Ch_1_hi = 0.1829*count - 62.89, count>501.54

# Ch_2_lo = 0.07549*count - 2.974, count<500.40

# Ch_2_hi = 0.2265*count - 78.92, count>500.40

-------------------------------------------------------------------------------------

NOAA-19 AVHRR

# Ch_1_lo = 0.05659*count - 2.200, count<496.43

# Ch_1_hi = 0.1669*count - 57.38, count>496.43

# Ch_2_lo = 0.06829*count - 2.648, count<500.37

# Ch_2_hi = 0.2034*count - 70.22, count>500.37

--------------------------------------------------------------------------------------

The first 1b files produced with the updated CPIDS were:

NSS.HRPT.NN.D24044.S1115.E1120.B9656565.SV

NSS.GHRR.NN.D24044.S0928.E1119.B9656465.SV

NSS.HRPT.NP.D24044.S1121.E1126.B7740202.SV

NSS.GHRR.NP.D24044.S0934.E1126.B7740102.SV

For M3, M1 the first orbits processed will be the one running after orbit:

NSS.HRPT.M1.D24044.S0915.E0924.B5918282.GC

NSS.GHRR.M1.D24044.S1016.E1111.B5918283.SV

NSS.HRPT.M3.D24044.S0826.E0837.B2733939.GC

NSS.GHRR.M3.D24044.S0842.E1024.B2733940.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

Web Site(s) for Applicable Information: N/A

This message was sent by ESPC.Notification@noaa.gov. You have been sent this and other notifications because you have opted in to receive it. If for any reason, you wish to unsubscribe, please contact ESPC Help Desk at ESPCOperations@noaa.gov or (301) 817-3880. Please note: it may take up to two business days to process your unsubscribe request.