Administrative: NOAA-18, 19, MetOp-A/2 & MetOp-B/1, AVHRR, Monthly Visible Calibration Update, 12 May 12, 2015 - Issued: May 12, 2015 1615 UTC

Subject: Administrative: NOAA-18, 19, MetOp-A/2 & MetOp-B/1, AVHRR, Monthly Visible Calibration Update, 12 May 12, 2015 - Issued: May 12, 2015 1615 UTC

Topic: Visible calibration update for month of May 2015

Date/Time Issued: May 12, 2015 1615 UTC
Product(s) or Data Impacted: All products from channels 1, 2, and 3a
Date/Time of Initial Impact: May 12, 2015 1355 UTC
Date/Time of Expected End: Until Next Month's Coefficient Update
Length of Outage: N/A

Details/Specifics of Change:
On May 12 2015 at approximately 13:55 UTC, the following update of the calibration coefficients was implemented in the level 1B processing for NOAA-18, NOAA-19, MetOp-A/2 and MetOp-B/1 for the month of May. These coefficients are intended to be optimal on May 26, in the middle of the two scheduled updates.

Metop-B/1

Ch_1_lo = 0.05418*count - 2.134, count<500.62
Ch_1_hi = 0.1605*count - 55.37, count>500.62

Ch_2_lo = 0.06029*count - 2.435, count<503.00
Ch_2_hi = 0.1776*count - 61.44, count>503.00

Ch_3_lo = 0.03107*count - 1.306, count<500.85
Ch_3_hi = 0.2164*count - 94.12, count>500.85

Metop-A/2

Ch_1_lo = 0.05559*count - 2.248, count<501.01
Ch_1_hi = 0.1643*count - 56.70, count>501.01

Ch_2_lo = 0.06746*count - 2.682, count<500.42
Ch_2_hi = 0.2004*count - 69.19, count>500.42

Ch_3_lo = 0.03343*count - 1.374, count<501.94
Ch_3_hi = 0.2322*count - 101.13, count>501.94

NOAA-18 AVHRR

Ch_1_lo = 0.05840*count - 2.302, count<501.54
Ch_1_hi = 0.1741*count - 59.88, count>501.54

Ch_2_lo = 0.06814*count - 2.685, count<500.40
Ch_2_hi = 0.2045*count - 71.24, count>500.40

NOAA-19 AVHRR

Ch_1_lo = 0.05255*count - 2.043, count<496.43
Ch_1_hi = 0.1550*count - 53.29, count>496.43

Ch_2_lo = 0.05974*count - 2.317, count<500.37
Ch_2_hi = 0.1779*count - 61.43, count>500.37

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

NSS.HRPT.NP.D15132.S1437.E1450.B3224747.GC
NSS.GHRR.NP.D15132.S1249.E1436.B3224647.GC
NSS.LHRR.NP.D15132.S1725.E1737.B3224849.WI

NSS.HRPT.NN.D15132.S1408.E1421.B5140505.MO
NSS.GHRR.NN.D15132.S1415.E1541.B5140506.GC

For M2 & M1 the first orbits processed will be the one running after orbit:

NSS.HRPT.M1.D15132.S0904.E0913.B1373434.GC
NSS.FRAC.M1.D15132.S1240.E____.B13736__.MM

NSS.HRPT.M2.D15132.S1341.E1348.B4442323.MI
NSS.FRAC.M2.D15132.S1006.E____.B44421__.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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