Author: T. J. StevensonPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Spectroscopic Studies at High Resolution of Atmospheric Constituents
Author: T. J. StevensonAdvances in Spectroscopic Monitoring of the Atmosphere
Author: Weidong ChenPublisher: Elsevier
ISBN: 0128156899
Category : Science
Languages : en
Pages : 634
Book Description
Advances in Spectroscopic Monitoring of the Atmosphere provides a comprehensive overview of cutting-edge technologies and monitoring applications. Concepts are illustrated by numerous examples with information on spectroscopic techniques and applications widely distributed throughout the text. This information is important for researchers to gain an overview of recent developments in the field and make informed selections among the most suitable techniques. This volume also provides information that will allow researchers to explore implementing and developing new diagnostic tools or new approaches for trace gas and aerosol sensing themselves. Advances in Spectroscopic Monitoring of the Atmosphere covers advanced and newly emerging spectroscopic techniques for optical metrology of gases and particles in the atmosphere. This book will be a valuable reference for atmospheric scientists, including those whose focus is applying the methods to atmospheric studies, and those who develop instrumentation. It will also serve as a useful introduction to researchers entering the field and provide relevant examples to researchers and students developing and applying optical sensors for a variety of other scientific, technical, and industrial uses. Overview of new applications including remote sensing by UAV, laser heterodyne radiometry, dual comb spectroscopy, and more Features in-situ observations and measurements for real-world data Includes content on leading edge optical sensors
Handbook of High Resolution Infrared Laboratory Spectra of Atmospheric Interest (1981)
Author: Aaron GoldmanPublisher: CRC Press
ISBN: 1351363050
Category : Science
Languages : en
Pages : 266
Book Description
The handbook presents spectra to be utilized for the detection and measurement of new constituents in the earth's atmosphere and to obtain data for common minor species with large gas amounts in the absorption cell (such as CH/sub 4/ and N/sub 2/O). These results can be applied in the identification of absorption features in atmospheric spectra determined over long atmospheric paths. The spectra were recorded with Fourier Transform Spectrometers which are more precise than grating spectrometers. Each molecule spectrum was plotted on two scales: a condensed scale covering the range from 75 to 300/cm in one frame, and an expanded view covering 20 or 10/cm per frame. Each plot contains the name of the molecule, chemical formula, the gas pressure, cell length, and estimated resolution of the spectrum.
High-Resolution Spectroscopic Studies of Atmospheric Gases (C2H2-N2, O2, and 15NH3).
Author: Hoimonti Immaculata RozarioPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
With the modern technology and availability of spectrometer systems, it is possible to provide more accurate and new parameters to the spectroscopic databases. Accordingly, three spectroscopic studies were carried out in this thesis. The first study is intended to find the suitable line-shape models that can reproduce C2H2-N2 spectra best as well as retrieve reliable parameters, which are very useful for spectroscopic studies. The second project of oxygen A-band spectra is dedicated to retrieving a new parameter, called the speed-dependent parameter. The main goal of the third study is to obtain a better ground state line list of 15NH3, which has never been studied as extensively as in this thesis. Performing the acetylene study will improve the use of line-shape profiles based on the spectral pressure regions. The new speed-dependent parameter and extended (439) lines of 15NH3 spectroscopic results will progress the retrievals of atmospheric spectra and enrich spectroscopic databases.
NASA Technical Memorandum
Author: Spectroscopy of the earth's Atmosphere and interstellar Medium
Author: K.N. RaoPublisher: Academic Press
ISBN: 0323146759
Category : Science
Languages : en
Pages : 539
Book Description
Spectroscopy of the Earth's Atmosphere and Interstellar Medium focuses on the characteristics of the electromagnetic spectrum of the Earth's atmosphere in the far-infrared and microwave regions. It discusses the modes of observation in field measurements and reviews the two techniques used in the spectral region. Organized into six chapters, this volume begins with an overview of the effect of water-vapor absorption, followed by a discussion on the two frequently used method for deriving atmospheric parameters from high-resolution infrared atmospheric spectra, namely, the equivalent width (EW) technique and the nonlinear least-square fitting (NLSF). Other chapters consider the mechanisms by which interstellar clouds are formed. In addition, the book explores the composition of interstellar clouds, ion-molecule reactions, and the formation of stars. This book will be useful to anyone involved in, or interested in learning more about the field of atmospheric spectroscopy, including scientists, aeronomers, astronomers, astrophysicists, and students.
High Resolution Infrared Spectroscopy of Carbon Dioxide and Nitrous Oxide at Elevated Temperatures
Author: Mark P. EsplinPublisher:
ISBN:
Category : Atmospheric carbon dioxide
Languages : en
Pages : 72
Book Description
Although both Carbon Dioxide and Nitrous Oxide are minor constituents of the terrestrial atmosphere, they play leading roles in several current atmospheric problems. Both CO2 and N2O are greenhouse gases, and while it is known that the atmospheric concentrations of both gases is increasing, the impact of these trends on global temperature is not yet adequately understood. In addition to being a greenhouse gas, N2O plays an indirect part in ozone chemistry. Heating a molecule makes possible the observations of molecular transitions originating from highly excited rotation-vibration states. Heating a molecule makes possible the observations of molecular transitions originating from highly excited rotation-vibration states. These observations can then be used to characterize the shape of the molecular potential function at increasing distances from the minimum of the potential function. The infrared spectra of linear molecules like CO2 and N2O are composed of vibration bands made up of a number of nearly equally spaced rotation lines. A Fourier Spectrometer is ideally suited to the study of high temperature gases since it meets both of these needs by providing high resolution over a wide spectral region.
Collaborative Study of Analysis of High Resolution Infrared Atmospheric Spectra Between NASA Langley Research Center and the University of Denver
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781721192632
Category :
Languages : en
Pages : 28
Book Description
The Langley-D.U. collaboration on the analysis of high resolution infrared atmospheric spectra covered a number of important studies of trace gases identification and quantification from field spectra, and spectral line parameters analysis. The collaborative work included: Quantification and monitoring of trace gases from ground-based spectra available from various locations and seasons and from balloon flights. Studies toward identification and quantification of isotopic species, mostly oxygen and Sulfur isotopes. Search for new species on the available spectra. Update of spectroscopic line parameters, by combining laboratory and atmospheric spectra with theoretical spectroscopy methods. Study of trends of atmosphere trace constituents. Algorithms developments, retrievals intercomparisons and automatization of the analysis of NDSC spectra, for both column amounts and vertical profiles. Goldman, Aaron Langley Research Center
Author: 
Author: Kenneth Fox