Title :
Remote sensing of land surface temperature: the directional viewing effect
Author :
Smith, James A. ; Chauhan, Narinder S. ; Schmugge, Thomas J. ; Ballard, Jerrell R., Jr.
Author_Institution :
NASA Goddard Space Flight Center, Greenbelt, MD, USA
fDate :
7/1/1997 12:00:00 AM
Abstract :
Land surface temperature and emissivity products are currently being derived from satellite and aircraft remote sensing data using a variety of techniques to correct for atmospheric effects. Implicit in the commonly employed approaches is the assumption of isotropy in directional thermal infrared exitance. The authors´ theoretical analyses indicate angular variations in apparent infrared temperature will typically yield land surface temperature errors ranging from 1 to 4°C unless corrective measures are applied
Keywords :
atmospheric boundary layer; atmospheric techniques; atmospheric temperature; geophysical techniques; radiometry; remote sensing; terrestrial heat; IR radiometry; airborne method; aircraft; angular variation; apparent infrared temperature; atmosphere; boundary layer; directional thermal infrared exitance; directional viewing; emissivity; errors; geology; geophysical measurement technique; geothermal method; infrared method; land surface; satellite remote sensing; temperature; terrain mapping; terrestrial heat; theory; thermal structure; Atmospheric measurements; Land surface; Land surface temperature; Optical surface waves; Remote sensing; Rough surfaces; Soil; Surface roughness; Temperature distribution; Temperature sensors;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
