Slant path atmospheric extinction measurements

Details Slant path atmospheric extinction measurements Slant path atmospheric extinction measurements

Jan 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981spie..289..206g&link_type=abstract

In: International Conference on Fourier Transform Infrared Spectroscopy, Columbia, SC, June 8-12, 1981, Proceedings. (A82-21426

Computer Science

Sound

Absorption Spectroscopy, Atmospheric Attenuation, Atmospheric Sounding, Fourier Transformation, Solar Radiation, Aerosols, Atmospheric Moisture, Atmospheric Scattering, Carbon Dioxide Lasers, Df Lasers, Microwave Attenuation, Water Vapor

Scientific paper

A commercial Fourier transform spectrometer is being used to collect 0.06/cm 2-14-micron slant path atmospheric spectra using the sun as the source of radiation. Using a Lambert plot approach, 10-15 spectra are collected at different air masses. The logarithm of the intensity versus air mass is used to calculate the extinctance for the atmosphere at arbitrary frequencies within the bandwidth. Over the past three years, spectra have been collected on over 120 days at White Sands Missile Range, NM. Up to a factor of ten variation in the atmospheric extinction is observed at many CO2 laser frequencies which correlate with atmospheric water vapor measurements. Variations in the atmospheric extinction for DF frequencies are smaller and do not correlate with the water vapor measurements.

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