Author: Louis Russell WeberPublisher:
ISBN:
Category : Absorption spectra
Languages : en
Pages : 26
Book Description
The Infrared Absorption Spectrum of Water Vapor Beyond 10 U
Author: Louis Russell WeberPublisher:
ISBN:
Category : Absorption spectra
Languages : en
Pages : 26
Book Description
The infrared Absorption Spectrum of water vapor beyond 10 my
Author: Louis Russell WeberThe infrared Absorption Spectrum of water vapor beyond 10
Author: Louis Russell WeberThe Infrared Absorption Spectrum of Water Vapor Beyond 10 @, a Dissertation Submitted ... for the Degree of Doctor of Philosophy in the University of Michigan, by Louis Russell Weber
Author: Louis Russell WeberThe Infrared Absorption Spectrum of Water in Its Liquid State
Author: Kirill I︠A︡kovlevich KondratʹevPublisher:
ISBN:
Category : Infrared spectra
Languages : en
Pages : 44
Book Description
An Outline for the RTNEPH Infrared Atmospheric Water Vapor Attenuation Study
Author: Robert Paul D'EntremontPublisher:
ISBN:
Category : Attenuation (Physics)
Languages : en
Pages : 50
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.
Nu-averaged Infrared Absorption Coefficients of Water Vapor
Author: R. F. CalfeePublisher:
ISBN:
Category : Absorption spectra
Languages : en
Pages : 32
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.
The Infrared Absorption Spectrum of Water Vapor and Carbon Dioxide
Author: H. N. RitlandPublisher:
ISBN:
Category :
Languages : en
Pages : 56
Book Description
A brief review is given of the basic principles which govern the absorption of infrared radiation by molecules, with emphasis on the factors which govern the qualitative features of the observed spectra. This is used as a basis for the examination of the infrared spectra of water vapor and of carbon dioxide. The characteristics of the individual bands are discussed in terms of the underlying theory and are illustrated by experimental absorption curves derived from the published literature. (Author).
Tropospheric Water Vapor Absorption in the Infrared Window Regions
Author: Michael Eugene ThomasPublisher:
ISBN:
Category : Infrared spectroscopy
Languages : en
Pages : 468
Book Description
Attenuation of infrared radiation in the troposphere is dominated by water vapor absorption. Most past work on the spectroscopy of water vapor has been on the analysis of the rotational and vibrational bands. As a result a thorough listing of line positions, line strengths and halfwidths exists today. Because of the weak 'continuum' absorption in the water vapor windows centered at 10 and 4 microns, efforts to measure and model the continuum have not been as successful as efforts in the analysis of the bands. Yet a precise understanding of continuum absorption is important for long path energy transmission. The purpose of this study is to demonstrate the importance of far wing phenomena in characterizing H2O continuum absorption. A total line shape for water vapor-nitrogen interactions valid under tropospheric conditions is derived. The model is tested using a set of experimental room temperature H2O continuum measurements of high quality. Using this data base parameters of the far wing component of the total line shape are determined.
The Spectroscopic Method of Integral Determination of the Water Vapor Content in a Column of Atmosphere
Author: I. I︠A︡ BadinovPublisher:
ISBN:
Category : Water vapor, Atmospheric
Languages : en
Pages : 22
Book Description