Topic:
Visible Calibration Coefficient Updates
Date/Time(UTC) Message Issued:
10 Junly 2007, 2015 UTC
Satellite(s) Involved:
NOAA-16/L, 17/M, 18/N, & MetOp-2/A
Instrument(s) Involved:
AVHRR
Product(s) Involved/Affected:
All Products Channels 1, 2, and 3a
Date/Time(UTC) of Initial Implementation:
10 July 2007, Time 1237 UTC
Details/Specifics of Change:
On 10 July 2007, the July monthly update of the AVHRR Visible calibration coefficients was completed for NOAA-16/L, NOAA-17/M, NOAA-18/N, and MetOp-2/A. The updates were made operational at approximately 1237 UTC. The first orbits processed after the update were:
NSS.HRPT.NK.D07191.S1216.E1227.B4760101.WI
NSS.GHRR.NK.D07191.S1029.E1215.B4760001.WI
NSS.HRPT.NL.D07191.S1222.E1230.B3504040.GC
NSS.GHRR.NL.D07191.S1037.E1219.B3503940.GC
N1A.HRPT.NM.D07191.S1144.E1157.B2620304.CF
NSS.GHRR.NM.D07191.S1217.E1410.B2620405.WI
NSS.LHRR.NM.D07191.S1341.E1347.B2620505.WI
NSS.GHRR.NN.D07191.S1053.E1240.B1101314.GC
NSS.HRPT.NN.D07191.S1241.E1255.B1101414.GC
NSS.LHRR.NN.D07191.S1223.E1234.B1101414.GC
NSS.FRAC.M2.D07191.S1042.E1222.B0374748.SV
The following update of the calibration coefficients was implemented:
NOAA-16/L AVHRR
Ch_1_lo = 0.05550*count - 2.140, count<498.96
Ch_1_hi = 0.1620*count - 55.05, count>498.96
Ch_2_lo = 0.06049*count - 2.285, count<500.16
Ch_2_hi = 0.1782*count - 61.17, count>500.16
NOAA-17/M AVHRR
Ch_1_lo = 0.05559*count - 2.225, count<501.12
Ch_1_hi = 0.1632*count - 56.14, count>501.12
Ch_2_lo = 0.06699*count - 2.630, count<500.73
Ch_2_hi = 0.1994*count - 69.04, count>500.73
Ch_3_lo = 0.03228*count - 1.361, count<501.37
Ch_3_hi = 0.2263*count - 98.79, count>501.37
NOAA-18/N AVHRR
Ch_1_lo = 0.05302*count - 2.090, count<501.00
Ch_1_hi = 0.1581*count - 54.36, count>501.00
Ch_2_lo = 0.06154*count - 2.424, count<500.00
Ch_2_hi = 0.1846*count - 64.34, count>500.00
MetOp-2/A
Ch_1_lo = 0.05206*count - 2.105, count<501.00
Ch_1_hi = 0.1538*count - 53.10, count>501.00
Ch_2_lo = 0.06023*count - 2.394, count<500.00
Ch_2_hi = 0.17888*count - 61.77, count>500.00
Ch_3_lo = 0.03087*count - 1.269, count<502.00
Ch_3_hi = 0.21443*count - 93.40, count>502.00
These coefficients are intended to be optimal on July 28, in the middle of the two scheduled updates.
Contact Person(s) Name/Email/Phone Number for Questions:
Emily Harrod Emily.Harrod@noaa.gov 301-817-3882 operations support
Fangfang.Yu Fangfang.Yu@noaa.gov 301-763-8042 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
http://www.oso.noaa.gov/goes/index.htm - SOCC geostationary satellite status
http://www.oso.noaa.gov/daily-news/index.asp - SOCC morning reports
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*
* Emily D. Harrod
* NOAA/NESDIS/OSDPD/IPD
* Computer Operations Branch
* Pre-Product Processing Group
* E/SP11, NSOF, room 1460
* 4231 Suitland Road
* Suitland, Maryland 20746-4304
* USA
* voice 301-817-3882
* fax 301-817-3902
* email Emily.Harrod@noaa.gov
*
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