Differential Optical Absorption Spectroscopy

Differential Optical Absorption Spectroscopy PDF Author: Ulrich Platt
Publisher: Springer Science & Business Media
ISBN: 3540757767
Category : Nature
Languages : en
Pages : 608

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Book Description
The first part of this book reviews the basics of atmospheric chemistry, radiation transport, and optical spectroscopy before detailing the principles underlying DOAS. The second part describes the design and application of DOAS instruments as well as the evaluation and interpretation of spectra. The recent expansion of DOAS application to the imaging of trace gas distributions by ground, aircraft, and satellite-based instruments is also covered.

Differential Optical Absorption Spectroscopy

Differential Optical Absorption Spectroscopy PDF Author: Ulrich Platt
Publisher: Springer Science & Business Media
ISBN: 3540757767
Category : Nature
Languages : en
Pages : 608

Get Book

Book Description
The first part of this book reviews the basics of atmospheric chemistry, radiation transport, and optical spectroscopy before detailing the principles underlying DOAS. The second part describes the design and application of DOAS instruments as well as the evaluation and interpretation of spectra. The recent expansion of DOAS application to the imaging of trace gas distributions by ground, aircraft, and satellite-based instruments is also covered.

Field Measurements of Water Continuum and Water Dimer AbsoDFFrption by Active Long Path Differential Optical Absorption Spectroscopy (DOAS)

Field Measurements of Water Continuum and Water Dimer AbsoDFFrption by Active Long Path Differential Optical Absorption Spectroscopy (DOAS) PDF Author: Andreas Lotter
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description


DOASIS

DOASIS PDF Author: Stefan Kraus
Publisher:
ISBN: 9783832254520
Category :
Languages : en
Pages : 162

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Book Description


Air Monitoring by Spectroscopic Techniques

Air Monitoring by Spectroscopic Techniques PDF Author: Markus W. Sigrist
Publisher: John Wiley & Sons
ISBN: 9780471558750
Category : Technology & Engineering
Languages : en
Pages : 564

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Book Description
Leading experts discuss the characteristics, advantages, limitations and future aspects of modern spectroscopic techniques for environmental analysis. Demonstrates how these methods can be applied to trace gas detection and assessment. Concentrates on the latest techniques--both laser and non-laser based--which offer advantages for air pollution and gas monitoring as opposed to more conventional methods. Numerous examples of applications illustrate the potential of the techniques backed up by cutting-edge information and representative data.

Photometry, Radiometry, and Measurements of Optical Losses

Photometry, Radiometry, and Measurements of Optical Losses PDF Author: Michael Bukshtab
Publisher: Springer
ISBN: 9811077452
Category : Science
Languages : en
Pages : 808

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Book Description
The revised 2nd edition of this practical book provides an expanded treatment and comparison of techniques used in advanced optical measurements, guiding its reader from fundamental radiometric and photometric concepts to the state-of-the-art in highly sensitive measurements of optical losses and in spectroscopic detection using coherent laser light and spontaneous radiation. The book describes and compares a broad array of high-sensitivity methods and techniques – from interferometric and/or calorimetric, acousto-optic and resonator or polarization to wavelength- and frequency-modulation, phase-shift and decay time studies, and direct-loss measurements for free-space, fiber- or waveguide-based systems and devices. Updated throughout, the new edition describes novel trends in spectral interferometry, frequency-comb and laser-excitation spectroscopy, reflected in the developments of Raman, Brillouin and FTIR (Fourier Transform Infra-Red) techniques for biomedical research, biotech sensing and detection. It also covers broad practical implementations of time- and frequency-domain terahertz spectroscopy measurements. This book reviews the physical concepts of radiation transfer, providing a quantitative foundation for the means of measurements of optical losses, which affect propagation and distribution of light waves in various media and in diverse optical systems and components. It focuses on the application of optical methods and procedures for the evaluation of transparent, reflecting, scattering, absorbing, and aggregated objects, and for determining the power and energy parameters of radiation and color properties of light. This updated new edition will serve as an up-to-date reference source and practical guide for those using photometric and radiometric techniques.

Analytical Techniques for Atmospheric Measurement

Analytical Techniques for Atmospheric Measurement PDF Author: Dwayne Heard
Publisher: John Wiley & Sons
ISBN: 1405171448
Category : Science
Languages : en
Pages : 528

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Book Description
Almost all of the breakthroughs in understanding the atmospherehave been initiated by field observations, using a range ofinstrumental techniques. Developing or deploying instruments tomake further observations demands a thorough understanding of thechemical and spectroscopic principles on which such measurementsdepend. Written as an authoritative guide to the techniques of instrumentalmeasurement for the atmospheric scientist, research student orundergraduate, Analytical Techniques for Atmospheric Measurementfocuses on the instruments used to make real time measurements ofatmospheric gas and aerosol composition. Topics covered include howthey work, their strengths and weaknesses for a particular task,the platforms on which they have been deployed and how they arecalibrated. It explains the fundamental principles upon which theinstrumental techniques are based (ie what property of a moleculecan be exploited to enable its detection), what limits instrumentalsensitivity and accuracy, and the information that can be gainedfrom their use.

Continuous Emission Monitoring

Continuous Emission Monitoring PDF Author: James A. Jahnke
Publisher: John Wiley & Sons
ISBN: 9780471292272
Category : Technology & Engineering
Languages : en
Pages : 420

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Book Description
Continuous Emission Monitoring, Second Edition is the most comprehensive source of information on the latest technical and regulatory issues that are affecting the design, application, and certification of CEM systems. It provides a thorough discussion of CEM systems, how they work, their advantages and drawbacks, and the regulatory requirements that govern their operation. Equally suitable for an environmental engineer in a plant or control agency, a CEM user, or an inspector/auditor, this book makes it possible to assess the operating characteristics of commercial systems and to evaluate them for a specific application. Thoroughly referenced, with numerous illustrations, it features: * A comprehensive review of regulations, with clear information on changes * New measurement techniques, designs for "smart" analyzers, and advanced monitoring approaches * New chapters on flow rate and continuous particulate monitors * Techniques for recordkeeping, generating reports, and using data acquisition and handling systems * Quality assurance/quality control programs CEMs are becoming a fact of life in regulatory programs throughout the United States, Canada, Europe, and Asia. Environmental professionals as well as vendors and manufacturers will turn to Continuous Emission Monitoring for clear, up-to-date information on the technical and regulatory issues shaping this dynamic field.

Optical and Laser Remote Sensing

Optical and Laser Remote Sensing PDF Author: D.K. Killinger
Publisher: Springer
ISBN: 3540395520
Category : Science
Languages : en
Pages : 390

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Book Description
The field of optical and laser remote sensing has grown rapidly in recent years. This dynamic growth has been stimulated not only by technological advances in lasers, detectors, and optical system design, but also by the potential application of remote sensing systems to a wide variety of atmo spheric measurements. Optical and laser remote sensing can allow single ended measurement capability not offered by conventional point-detection techniques. While many past measurements have been associated with labo ratory research. practical systems have recently been developed which are capable of remotely detecting. measuring. and tracking a wide range of molecular and atomic species in the atmosphere with concentrations of parts per billion and at ranges over 100 km. This book is a compilation of papers which represent an overview of the present state of development of optical and laser remote sensing tech nology. The subjects covered include both passive and active remote sen sing techniques in the UV, visible, and IR spectral regions. related laser and detector technology, and atmospheric propagation and system analysis considerations. While the papers do not constitute an exhaustive treat ment of the excellent research being conducted in this field, they are representative of the wide diversity of present efforts. It is hoped that the reader will gain a general understanding of the current research in optical and laser remote sensing as well as an overview of current systems development.

Doas and Solar Spectroscopic Measurements of Atmospheric Constituents

Doas and Solar Spectroscopic Measurements of Atmospheric Constituents PDF Author: Mau Hing Chan
Publisher: LAP Lambert Academic Publishing
ISBN: 9783846596852
Category : Absorption spectra
Languages : en
Pages : 256

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Book Description
Optical spectroscopy is a well-developed scientific method to retrieve atmospheric constituents. A simple methodology is to study the interactions of a light source with the atmosphere. Examples of the interactions include absorption and scattering effect due to air molecules and aerosols. Depending on the trace gases or aerosols intended to be measured, different methodologies are applied. Differential Optical Absorption Spectroscopy (DOAS) is widely employed for the trace gas retrieval; whereas analysis of scattering process is used to determine the aerosol features. Experimentally, to retrieve nitrogen dioxide, either direct sunlight or an artificial broadband light source can be used, and the DOAS method is used to analyze the residual light intensity. To retrieve water vapor column densities, the Langley method is employed. In addition, to characterize aerosol features, diffuse sunlight is analyzed. Sunlight is an elegant broadband light source for the atmospheric interactions. With the application of the DOAS method and solar spectroscopy, the book presents the working principles, inversion algorithms, and instrumentation in atmospheric research and trace gas monitoring.

Applied Photometry, Radiometry, and Measurements of Optical Losses

Applied Photometry, Radiometry, and Measurements of Optical Losses PDF Author: Michael Bukshtab
Publisher: Springer Science & Business Media
ISBN: 9400721641
Category : Technology & Engineering
Languages : en
Pages : 726

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Book Description
Applied Photometry, Radiometry, and Measurements of Optical Losses reviews and analyzes physical concepts of radiation transfer, providing quantitative foundation for the means of measurements of optical losses, which affect propagation and distribution of light waves in various media and in diverse optical systems and components. The comprehensive analysis of advanced methodologies for low-loss detection is outlined in comparison with the classic photometric and radiometric observations, having a broad range of techniques examined and summarized: from interferometric and calorimetric, resonator and polarization, phase-shift and ring-down decay, wavelength and frequency modulation to pulse separation and resonant, acousto-optic and emissive - subsequently compared to direct and balancing methods for studying free-space and polarization optics, fibers and waveguides. The material is focused on applying optical methods and procedures for evaluation of transparent, reflecting, scattering, absorbing, and aggregated objects, and for determination of power and energy parameters of radiation and color properties of light.