Nu-averaged Infrared Absorption Coefficients of Water Vapor PDF Download
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Author: R. F. Calfee
Publisher:
ISBN:
Category : Absorption spectra
Languages : en
Pages : 32
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Book Description
We report the quantitative absorption coefficients of water vapor in a format suitable for calculation of water vapor absorption spectra characterized by instrumental bandpasses of 1 cm−1 or greater in the 670 to 1450 cm−1 region. The coefficients are derived from individual line parameters of H2O and represent a useful way of reducing line parameter data to a practical volume of information for 1 cm−1 resolution spectra of the troposphere. Transmission spectra for three water vapor concentrations show typical applications of the absorption coefficient tables. The application of the data is restricted to conditions within 10% of 1 atmosphere pressure and a temperature of 296 K if a transmission accuracy of 2% is to be maintained.
Author: R. F. Calfee
Publisher:
ISBN:
Category : Absorption spectra
Languages : en
Pages : 32
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Book Description
We report the quantitative absorption coefficients of water vapor in a format suitable for calculation of water vapor absorption spectra characterized by instrumental bandpasses of 1 cm−1 or greater in the 670 to 1450 cm−1 region. The coefficients are derived from individual line parameters of H2O and represent a useful way of reducing line parameter data to a practical volume of information for 1 cm−1 resolution spectra of the troposphere. Transmission spectra for three water vapor concentrations show typical applications of the absorption coefficient tables. The application of the data is restricted to conditions within 10% of 1 atmosphere pressure and a temperature of 296 K if a transmission accuracy of 2% is to be maintained.
Author: Environmental Research Laboratories (U.S.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
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Author: Robert Paul D'Entremont
Publisher:
ISBN:
Category : Attenuation (Physics)
Languages : en
Pages : 50
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Book Description
The Real-Time Nephanalysis (RTNE PH) generates real-time global analysis of cloud extent, base, height, and type. The RTNE PH makes extensive use of satellite data that are measured in the 10-12 micron infrared (IR) window for thermal mapping of clouds and the earth's surface both day and night. Water vapor absorption effects are significant in such data, especially for high viewing angles and tropical atmospheres where water vapor concentrations are generally high. Water vapor attenuates the emitted ground radiance, reducing its magnitude and with it the apparent temperature of the surface being viewed. Currently, the RTNEPH takes into account such attenuation losses using lookup tables that are functions of viewing geometry, time of day, type of background, and the like. However, these corrections have limited value and leave room for significant improvement. This report outlines and presents two new techniques that are expected to enhance the attenuation correction capabilities of the RTNEPH, multivariate polynomial regression (the Weinreb technique) and the correlated K method.
Author:
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Category : Government publications
Languages : en
Pages : 1570
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Author:
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ISBN:
Category : Atmosphere
Languages : en
Pages : 548
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Author: United States. Superintendent of Documents
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ISBN:
Category : United States
Languages : en
Pages : 1466
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Author: Dean A. Wilson
Publisher:
ISBN:
Category : Dynamics of a particle
Languages : en
Pages : 748
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Author: Environmental Science Information Center. Library and Information Services Division
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ISBN:
Category :
Languages : en
Pages : 514
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Author: Environmental Science Information Center. Library and Information Services Division
Publisher:
ISBN:
Category : Book catalogs
Languages : en
Pages : 512
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Author: United States. Department of Commerce
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ISBN:
Category : Commerce
Languages : en
Pages : 692
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