Topic:
Visible calibration update for month of September
Date/Time(UTC) Message Issued:
13 September 2007, 1430 UTC
Satellite(s) Involved:
NOAA-16, 17, 18, & MetOp-2/A
Instrument(s) Involved:
AVHRR
Product(s) Involved/Affected:
All Products
Date/Time(UTC) of Initial Implementation:
11 September2007, Time 1348 UTC
Details/Specifics of Change:
The AVHRR visible calibration coefficients update for the month of September 2007 was completed at approximately 1448 UTC on September 11 as planned. Following is a list of the first orbits processed following the update.
For NL/NM/NN,
NSS.HRPT.NL.D07254.S1507.E1521.B3593131.GC
NSS.GHRR.NL.D07254.S0253.E0448.B3592425.GC
NSS.HRPT.NM.D07254.S1455.E1509.B2710202.WI
NSS.GHRR.NM.D07254.S1304.E1455.B2710102.WI
NSS.LHRR.NM.D07254.S1314.E1326.B2710101.WI
NSS.HRPT.NN.D07254.S1332.E1346.B1190303.GC
NSS.GHRR.NN.D07254.S1144.E1331.B1190203.GC
NSS.LHRR.NN.D07254.S1257.E1308.B1190203.GC
For M2,
NCS.FRAC.M2.D07254.S1038.E1220.B0464243.SV
The AVHRR visible calibration coefficients used for the month of September 2007 are provided below.
Metop-A/2
Ch_1_lo = 0.05248*count - 2.122, count<501.00
Ch_1_hi = 0.1551*count - 53.52, count>501.00
Ch_2_lo = 0.06216*count - 2.471, count<500.00
Ch_2_hi = 0.1846*count - 63.75, count>500.00
Ch_3_lo = 0.03090*count - 1.270, count<502.00
Ch_3_hi = 0.2146*count - 93.49, count>502.00
NOAA-18 AVHRR
Ch_1_lo = 0.05307*count - 2.092, count<501.00
Ch_1_hi = 0.1582*count - 54.41, count>501.00
Ch_2_lo = 0.06149*count - 2.423, count<500.00
Ch_2_hi = 0.1845*count - 64.29, count>500.00
NOAA-17 AVHRR
Ch_1_lo = 0.05570*count - 2.229, count<501.12
Ch_1_hi = 0.1635*count - 56.26, count>501.12
Ch_2_lo = 0.06721*count - 2.639, count<500.73
Ch_2_hi = 0.2001*count - 69.27, count>500.73
Ch_3_lo = 0.03238*count - 1.365, count<501.37
Ch_3_hi = 0.2270*count - 99.09, count>501.37
NOAA-16 AVHRR
Ch_1_lo = 0.05576*count - 2.150, count<498.96
Ch_1_hi = 0.1628*count - 55.31, count>498.96
Ch_2_lo = 0.06058*count - 2.288, count<500.16
Ch_2_hi = 0.1785*count - 61.26, count>500.16
These coefficients are intended to be optimal on September 25, 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
Xiangqian Wu Xiangqian.Wu@noaa.gov 301-763-8136 x 138 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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