Topic:
Visible calibration update for month of August
Date/Time(UTC) Message Issued:
14 August 2007, 1730 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:
14 August 2007, Time 1321 UTC
Details/Specifics of Change:
The AVHRR visible calibration coefficients updates for the month of August 2007 were made operational at approximately 1321 UTC on 14 August 2007. The first orbits processed after the update were:
NSS.HRPT.NL.D07226.S1353.E1406.B3553535.GC
NSS.GHRR.NL.D07226.S1218.E1353.B3553435.GC
NSS.HRPT.NM.D07226.S1403.E1415.B2670303.WI
NSS.GHRR.NM.D07226.S1208.E1402.B2670203.WI
NSS.LHRR.NM.D07226.S1333.E1339.B2670303.WI
NSS.HRPT.NN.D07226.S1321.E1333.B1150808.GC
NSS.GHRR.NN.D07226.S1133.E1319.B1150708.GC
NSS.LHRR.NN.D07226.S1245.E1257.B1150708.GC
NSS.FRAC.M2.D07226.S1157.E1339.B0424546.SV
The following update of the calibration coefficients were implemented for the monthly August update:
NOAA-16 AVHRR
Ch_1_lo = 0.05562*count - 2.145, count<498.96
Ch_1_hi = 0.1624*count - 55.18, count>498.96
Ch_2_lo = 0.06043*count - 2.283, count<500.16
Ch_2_hi = 0.1781*count - 61.11, count>500.16
NOAA-17 AVHRR
Ch_1_lo = 0.05565*count - 2.227, count<501.12
Ch_1_hi = 0.1634*count - 56.21, count>501.12
Ch_2_lo = 0.06702*count - 2.631, count<500.73
Ch_2_hi = 0.1995*count - 69.07, count>500.73
Ch_3_lo = 0.03234*count - 1.363, count<501.37
Ch_3_hi = 0.2267*count - 98.97, count>501.37
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 = 0.06141*count - 2.420, count<500.00
Ch_2_hi = 0.1843*count - 64.21, count>500.00
Metop-A/2
Ch_1_lo = 0.05237*count - 2.117, count<501.00
Ch_1_hi = 0.1547*count - 53.41, count>501.00
Ch_2_lo = 0.06059*count - 2.408, count<500.00
Ch_2_hi = 0.17795*count - 62.14, count>500.00
Ch_3_lo = 0.03088*count - 1.269, count<502.00
Ch_3_hi = 0.21446*count - 93.42, count>502.00
These coefficients are intended to be optimal on August
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
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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