Topic:
APT Channel Changes on NOAA-18 and NOAA-19
Date/Time(UTC) Message Issued:
16 December 2009 1425 UTC
Satellite(s) Involved:
NOAA-18 and NOAA-19
Instrument(s) Involved:
AVHRR
Product(s) Involved/Affected:
APT Direct Readout
Date/Time(UTC) of Initial Implementation:
22 December 2009, Time 000230 UTC
Details/Specifics of Change:
The NOAA/NESDIS Office of Satellite Operations has announced the following:
The APT services on NOAA-18 and NOAA-19 will modified to improve the data content. Traditionally, NOAA provides visible data and infrared data during the daylight portion of the orbit and infrared data during the night-time portion of the orbit. This allowed the APT users to have access to usable and complementary data at all times. Therefore, the new APT data content for the PM spacecrafts will be:
NOAA-18
- APT Channel A: AVHRR Channel 1, ground track day
- APT Channel A: AVHRR Channel 3B, ground track night
- APT Channel B: AVHRR Channel 4, entire orbit
NOAA-19
- APT Channel A: AVHRR Channel 2, ground track day
- APT Channel A: AVHRR Channel 3B, ground track night
- APT Channel B: AVHRR Channel 4, entire orbit
Since NOAA-18 is in close proximity of NOAA -19, the use of AVHRR Channel 2 (NOAA -19 APT) in the daylight portion of the orbit will enable APT users to acquire data for cloud and surface mapping. This will complement AVHRR Channel 1 (NOAA-18 APT) for land/water boundaries. The use of AVHRR Channel 1 and Channel 2 in the same orbital plane will allow APT users the full range of visible data.
Contact Person(s) Name/Email/Phone Number for Questions:
Marlin O. Perkins Marlin.O.Perkins@noaa.gov Direct Readout Services
Vincent Tabor Vincent.Tabor@noaa.gov 301-817-3882 Level 1B operations support
Carl Gliniak Carl.Gliniak@noaa.gov 301-817-4207 Spacecraft operations support
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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