AVHRR
Since 1979, the Advanced Very High Resolution Radiometers (AVHRR)
on board of the National Oceanic and Atmospheric Administration (NOAA)
series of satellites have been in continuous polar orbit.
AVHRR data have become extremely important for global studies
because they carry multiple bands in the visible, the infrared and
the thermal spectrum, and a complete coverage of the Earth is available
twice daily with 1.1 km resolution at nadir and from two platforms.
AVHRR has allowed
us for the first time to improve our studies of the earth surface from the
regional scale to the global scale using remote sensing
techniques.
The Pathfinder AVHRR imagery consists of
12 channels from which only 5 channels are original band information
and only 2 bands need to be corrected The remaining channels provide location,
quality , cloud, and time information. Each band requires
about $20 MB$ and the
resolution is 8Km. Each AVHRR image covers the entire globe.
last updated 10/31/95
This page maintained by:
hfallaah@umiacs.umd.edu