Back

NOAA-18, 17, 16, AVHRR, Visible Calibration Update, 12June 2007 - Issued: 13 June 2007; 1845 UTC

Topic:
Visible Calibration Update for the Month of June

Date/Time(UTC) Message Issued:
13 June 2007, 1845 UTC

Satellite(s) Involved:
NOAA-18, 17, 16

Instrument(s) Involved:
AVHRR

Product(s) Involved/Affected:
NOAA-18 Channels 1 & 2
NOAA-17 Channels 1, 2, & 3
NOAA-16 Channels 1 & 2

Date/Time(UTC) of Initial Implementation:
12 June 2007, Time 1351 UTC

Details/Specifics of Change:
The following AVHRR visible calibration parameter update was made operational in level 1B data processing on June 12 at approximately 1351 UTC. The first orbits processed after the change were:

NSS.HRPT.NL.D07163.S1750.E1802.B3464848.GC
NSS.GHRR.NL.D07163.S1632.E1748.B3464748.GC

NSS.HRPT.NM.D07163.S1456.E1510.B2580707.WI
NSS.GHRR.NM.D07163.S1305.E1456.B2580607.WI
NSS.LHRR.NM.D07163.S1315.E1327.B2580606.WI

NSS.HRPT.NN.D07163.S1410.E1423.B1062020.GC
NSS.GHRR.NN.D07163.S1221.E1408.B1061920.GC
NSS.LHRR.NM.D07163.S1247.E1253.B2580606.WI

The following update of the calibration coefficients was performed:

NOAA-18 AVHRR
Ch_1_lo = 0.05291*count - 2.086, count<501.00
Ch_1_hi = 0.1578*count - 54.25, count>501.00

Ch_2_lo = 0.06127*count - 2.414, count<500.00
Ch_2_hi = 0.1838*count - 64.06, count>500.00

NOAA-17 AVHRR
Ch_1_lo = 0.05553*count - 2.222, count<501.12
Ch_1_hi = 0.1630*count - 56.09, count>501.12

Ch_2_lo = 0.06689*count - 2.626, count<500.73
Ch_2_hi = 0.1991*count - 68.94, count>500.73

Ch_3_lo = 0.03223*count - 1.359, count<501.37
Ch_3_hi = 0.2260*count - 98.65, count>501.37

NOAA-16 AVHRR
Ch_1_lo = 0.05539*count - 2.135, count<498.96
Ch_1_hi = 0.1617*count - 54.94, count>498.96

Ch_2_lo = 0.06035*count - 2.280, count<500.16
Ch_2_hi = 0.1778*count - 61.03, count>500.16

These coefficients are intended to be optimal on June 26, 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


--
*******************************************
*
* 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
*
*******************************************


ppp@nesdis.noaa.gov

Back