TRANSMISSION WINDOW NEAR 2400 CM 1 (-): AN EXPERIMENTAL AND MODELING STUDY

Authors
  1. Roney, P.L.
  2. Reid, F.
  3. Theriault, J-M.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN)
Abstract
The absorption in the 2400-cm 1(-) region is dominated by continuum absorptions from carbon dioxide and nitrogen, and it is important to be able to describe the temperature dependence of these two continua. A series of measurements of atmospheric transmission over a 5.7-km range were carried out during the summer and winter season of 1988. Following a brief description of the experiments a selected number of spectra, covering the temperature range from -21.4 to 30.3C, are presented. These measurements are compared with predictions by the atmospheric transmission model FASCOD2 and modified versions using models of the carbon dioxide and the nitrogen continua derived from experimental laboratory measurements. Finally, an improved temperature-dependent model for the nitrogen continuum is derived from atmospheric transmision measurements. The model covers the range of temperatures found in the troposphere and differs significantly from laboratory-based measurements.
Date of publication
15 May 1991
Number of Pages
10
Reprinted from
Applied Optics, vol 30, no 15, 1991, p 1995-2004
DSTKIM No
92-03345
CANDIS No
125791
Format(s):
Hardcopy;Originator's fiche received by DSIS

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