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NOAA-16,17,and 18, AVHRR Instrument, Viscal updates, Implementation Date 10 April 2007- Issued: Date issued 12 april 2007; time issued 14:40 UTC

Please note the corrected orbit for the first implementation of the updates for GHRR...

Topic:
Viscal updates for April 2007

Date/Time(UTC) Message Issued:
12 April 2007 14:40 UTC

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

Instrument(s) Involved:
AVHRR Instrument

Product(s) Involved/Affected:
All products using channels 1 and 2 on NOAA-16

All products using channels 1,2, and 3 on NOAA-17

All products using channels 1 and 2 on NOAA-18

Date/Time(UTC) of Initial Implementation:
10 April 2007 14:55 UTC

Details/Specifics of Change:

The following update of the calibration coefficients are
recommended for:

NOAA-18 AVHRR:

Ch_1_lo = 0.05275*count - 2.080, count<501.00
Ch_1_hi = 0.1573*count - 54.09, count>501.00


Ch_2_lo = 0.06092*count - 2.400, count<500.00
Ch_2_hi = 0.1828*count - 63.69, count>500.00

NOAA-17 AVHRR:

Ch_1_lo = 0.05547*count - 2.220, count<501.12
Ch_1_hi = 0.1629*count - 56.03, count>501.12


Ch_2_lo = 0.06675*count - 2.621, count<500.73
Ch_2_hi = 0.1987*count - 68.79, count>500.73


Ch_3_lo = 0.03219*count - 1.357, count<501.37
Ch_3_hi = 0.2257*count - 98.53, count>501.37


NOAA-16 AVHRR:

Ch_1_lo = 0.05519*count - 2.128, count<498.96
Ch_1_hi = 0.1611*count - 54.75, count>498.96


Ch_2_lo = 0.05986*count - 2.261, count<500.16
Ch_2_hi = 0.1764*count - 60.53, count>500.16

on April 10. These coefficients are intended to be optimal on April 24,
in the middle of the two scheduled updates.

>
> The visible calibration coefficient updates for April 2007 were implemented on 10 April 2007 at 14:55 UTC. The first orbits processed were:
>
> NSS.HRPT.NL.D07100.S1947.E2001.B3376060.WI
> NSS.GHRR.NL.D07100.S1006.E1159.B3375455.WI
>
> NSS.LHRR.NM.D07100.S1228.E1239.B2490909.WI
> NSS.HRPT.NM.D07100.S1550.E1604.B2491111.WI
> NSS.GHRR.NM.D07100.S1404.E1549.B2491011.WI
>
> NSS.HRPT.NN.D07100.S1458.E1510.B0973232.GC
> NSS.GHRR.NN.D07100.S1310.E1456.B0973132.GC
> NSS.LHRR.NN.D07100.S1616.E1622.B0973333.WI

Contact Person(s) Name/Email/Phone Number for Questions:

Xiangqian Wu, Ph. D.
Physical Scientist, NOAA/NESDIS/ORA
E/RA2, Office 7214, 5200 Auth Rd.
Camp Springs, MD 20746-4304
Phone: 301-763-8136 ext. 138
FAX: 301-763-8580
Xiangqian.Wu@noaa.gov

Cecil A. Paris. PMP
Physical Scientist
301-817-3881
cecil.paris@noaa.gov

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/poesstatus/ - SOCC polar satellites status
http://www.oso.noaa.gov/daily-news/index.htm - SOCC morning reports



--
*******************************************
*
* Emily D. Harrod
* NOAA/NESDIS/OSDPD/IPD
* Product Systems Branch
* Pre-Product Processing Group
* E/SP13, Federal Building #4, room 0318
* 5200 Auth Road
* Suitland, Maryland 20746-4304
* USA
* voice 301-457-5247 ext 117
* fax 301-457-5199
* email Emily.Harrod@noaa.gov
*
*******************************************


ppp@nesdis.noaa.gov

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