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Advanced Very High Resolution Radiometer (AVHRR)

NSSDCA ID: 1981-059A-01

Mission Name: NOAA 7
Principal Investigator:

Description

The NOAA 7 Advanced Very High Resolution Radiometer (AVHRR) was a five-channel scanning radiometer capable of providing global daytime and nighttime sea-surface temperature and information about ice, snow, and clouds. These data were obtained on a daily basis for use in weather analysis and forecasting. The multispectral radiometer operated in the scanning mode and measured emitted and reflected radiation in the following spectral intervals: channel 1 (visible), 0.55 to 0.9 micrometer; channel 2 (near IR), 0.725 micrometer to detector cutoff around 1.1 micrometers; channel 3 (IR window), 3.55 to 3.93 micrometers; channel 4 (IR window), 10.5 to 11.5 micrometers; and channel 5 (IR window), 11.5 to 12.5 micrometers. All five channels had a spatial resolution of 1.1 km, and the three IR-window channels had a thermal resolution of 0.12 deg K at 300 deg K. The AVHRR was capable of operating in both real-time or recorded modes. Real-time or direct readout data were transmitted to ground stations both at low (4-km) resolution via automatic picture transmission (APT) and at high (1-km) resolution via high-resolution picture transmission (HRPT). Data recorded on board were available for processing in the NOAA central computer facility. They included global area coverage (GAC) data, with a resolution of 4 km, and local area coverage (LAC), that contained data from selected portions of each orbit with a 1-km resolution. Identical experiments were flown on other spacecraft in the TIROS-N/NOAA series.

Alternate Names

  • AVHRR
  • NOAA7/AVHRR

Facts in Brief

Mass: 25.5 kg
Power (avg): 25.7 W

Funding Agency

  • NOAA National Environmental Satellite Service (United States)

Discipline

  • Earth Science: Land Surface Processes

Additional Information

Questions and comments about this experiment can be directed to: Coordinated Request and User Support Office

 

Personnel

NameRoleOriginal AffiliationE-mail
Mr. William E. ShenkGeneral ContactNASA Goddard Space Flight Center
Principal InvestigatorNOAA National Environmental Satellite, Data and Information Service
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