NOAA-18, AVHRR Instrument,Channel 3 Switching, Implementation Date 05 August 2005- Issued: Date issued 04 August 2005 ; time issue 1725 UTC

*Topic*:
AVHRR channel 3a/3b switching to cease on NOAA-18. Instrument channel to placed in the nominal position.

*Date/Time(UTC) Message Issued:* .
04 August 2005/1725 UTC

*Satellite(s) Involved:*
NOAA-18

*Instrument(s) Involved:*
AVHRR
*Product(s) Involved/Affected:*
All Products using AVHRR channel 3a on NOAA-18

*Date/Time(UTC) of Initial Implementation:*
05 August 2005 / 1356 UTC

*Details/Specifics of Change:*
On 05 August 2005 at 1356 UTC the switching of the NOAA-18 AVHRR instrument channel 3a/3b process will be discontinued. At that time the instrument will be placed in the nominal position of channel 3B and automatic switching will be disenabled.

*Contact Person(s) Name/Email/Phone Number for Questions:*
Cecil Paris
Physical Scientist
301-457-5247 ext 129
cecil.paris@noaa.gov

Emily Harrod
Physical Scientist
301-457-5247 ext 117
emily.harrod@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

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*
* 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
*
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