NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
A differential absorption technique to estimate atmospheric total water vapor amountsVertically integrated water-vapor amounts can be remotely determined by measuring the solar radiance reflected by the earth's surface with satellites or aircraft-based instruments. The technique is based on the method by Fowle (1912, 1913) and utilizes the 0.940-micron water-vapor band to retrieve total-water-vapor data that is independent of surface reflectance properties and other atmospheric constituents. A channel combination is proposed to provide more accurate results, the SE-590 spectrometer is used to verify the data, and the effects of atmospheric photon backscattering is examined. The spectrometer and radiosonde data confirm the accuracy of using a narrow and a wide channel centered on the same wavelength to determine water vapor amounts. The technique is suitable for cloudless conditions and can contribute to atmospheric corrections of land-surface parameters.
Document ID
19920030705
Document Type
Conference Paper
Authors
Frouin, Robert (California, University; Scripps Institution of Oceanography, La Jolla, United States)
Middleton, Elizabeth (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1990
Subject Category
METEOROLOGY AND CLIMATOLOGY
Meeting Information
Symposium on FIFE - First ISLSCP Field Experiment(Anaheim, CA)
Funding Number(s)
CONTRACT_GRANT: NAG5-900
Distribution Limits
Public
Copyright
Other