Intercomparison Of Aerosol Instruments

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Intercomparison of Aerosol Instruments

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Intercomparison of Aerosol Instruments by :

Download or read book Intercomparison of Aerosol Instruments written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An intercomparison of aerosol instruments conducted February 23-27, 1981, at the Environmental Measurements Laboratory (EML) focused on five instruments: the Pollak and TSI condensation nucleus counters; the Active Scattering Aerosol Spectrometer (ASAS-X); and two aerosol electrometers. Test aerosols of sodium chloride and ammonium fluorescein generated by nebulization/electrostatic classification were used to obtain 195 lines of comparison data. Concentrations measured by the ASAS-X and the TSI aerosol electrometer averaged respectively 1.388 and 1.581 times that measured by the Pollak. These ratios were very stable during the week and there was little effect of particle size or material. Most other comparisons were equally stable. However, a review of past work at EML and elsewhere led to the disturbing conclusion that these ratios may change from year to year, or from season to season. A filter sample was taken from microscopy, concurrent with readings from the ASAS-X and the TSI condensation nucleus counters. In this sample, the two instruments differed by 20%. Within its 20% uncertainty, the filter result matched both the TSI and ASAS-X readings.

Intercomparison Test of Various Aerosol Measurement Techniques

Author :
Publisher :
ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.:/5 (354 download)

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Book Synopsis Intercomparison Test of Various Aerosol Measurement Techniques by :

Download or read book Intercomparison Test of Various Aerosol Measurement Techniques written by and published by . This book was released on 1984 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Intercomparison Test of Various Aerosol Measurement Techniques

Author : W. Cherdron
Publisher :
ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.:/5 (256 download)

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Book Synopsis Intercomparison Test of Various Aerosol Measurement Techniques by : W. Cherdron

Download or read book Intercomparison Test of Various Aerosol Measurement Techniques written by W. Cherdron and published by . This book was released on 1984 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Laboratory Experiments and Instrument Intercomparison Studies of Carbonaceous Aerosol Particles

Author :
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (946 download)

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Book Synopsis Laboratory Experiments and Instrument Intercomparison Studies of Carbonaceous Aerosol Particles by :

Download or read book Laboratory Experiments and Instrument Intercomparison Studies of Carbonaceous Aerosol Particles written by and published by . This book was released on 2015 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerosols containing black carbon (and some specific types of organic particulate matter) directly absorb incoming light, heating the atmosphere. In addition, all aerosol particles backscatter solar light, leading to a net-cooling effect. Indirect effects involve hydrophilic aerosols, which serve as cloud condensation nuclei (CCN) that affect cloud cover and cloud stability, impacting both atmospheric radiation balance and precipitation patterns. At night, all clouds produce local warming, but overall clouds exert a net-cooling effect on the Earth. The effect of aerosol radiative forcing on climate may be as large as that of the greenhouse gases, but predominantly opposite in sign and much more uncertain. The uncertainties in the representation of aerosol interactions in climate models makes it problematic to use model projections to guide energy policy. The objective of our program is to reduce the uncertainties in the aerosol radiative forcing in the two areas highlighted in the ASR Science and Program Plan. That is, (1) addressing the direct effect by correlating particle chemistry and morphology with particle optical properties (i.e. absorption, scattering, extinction), and (2) addressing the indirect effect by correlating particle hygroscopicity and CCN activity with particle size, chemistry, and morphology. In this connection we are systematically studying particle formation, oxidation, and the effects of particle coating. The work is specifically focused on carbonaceous particles where the uncertainties in the climate relevant properties are the highest. The ongoing work consists of laboratory experiments and related instrument inter-comparison studies both coordinated with field and modeling studies, with the aim of providing reliable data to represent aerosol processes in climate models. The work is performed in the aerosol laboratory at Boston College. At the center of our laboratory setup are two main sources for the production of aerosol particles: (a) two well-characterized source of soot particles and (b) a flow reactor for controlled OH and/or O3 oxidation of relevant gas phase species to produce well-characterized SOA particles. After formation, the aerosol particles are subjected to physical and chemical processes that simulate aerosol growth and aging. A suite of instruments in our laboratory is used to characterize the physical and chemical properties of aerosol particles before and after processing. The Time of Flight Aerosol Mass Spectrometer (ToF-AMS) together with a Scanning Mobility Particle Sizer (SMPS) measures particle mass, volume, density, composition (including black carbon content), dynamic shape factor, and fractal dimension. The-ToF-AMS was developed at ARI with Boston College participation. About 120 AMS instruments are now in service (including 5 built for DOE laboratories) performing field and laboratory studies world-wide. Other major instruments include a thermal denuder, two Differential Mobility Analyzers (DMA), a Cloud Condensation Nuclei Counter (CCN), a Thermal desorption Aerosol GC/MS (TAG) and the new Soot Particle Aerosol Mass Spectrometer (SP-AMS). Optical instrumentation required for the studies have been brought to our laboratory as part of ongoing and planned collaborative projects with colleagues from DOE, NOAA and university laboratories. Optical instruments that will be utilized include a Photoacoustic Spectrometer (PAS), a Cavity Ring Down Aerosol Extinction Spectrometer (CRD-AES), a Photo Thermal Interferometer (PTI), a new 7-wavelength Aethalometer and a Cavity Attenuated Phase Shift Extinction Monitor (CAPS). These instruments are providing aerosol absorption, extinction and scattering coefficients at a range of atmospherically relevant wavelengths. During the past two years our work has continued along the lines of our original proposal. We report on 12 completed and/or continuing projects conducted during the period 08/14 to 0814/2015. These projects are described in ...

Aerosol Remote Sensing

Author : Jacqueline Lenoble
Publisher : Springer Science & Business Media
ISBN 13 : 3642177255
Total Pages : 423 pages
Book Rating : 4.6/5 (421 download)

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Book Synopsis Aerosol Remote Sensing by : Jacqueline Lenoble

Download or read book Aerosol Remote Sensing written by Jacqueline Lenoble and published by Springer Science & Business Media. This book was released on 2013-02-11 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a much needed explanation of the basic physical principles of radiative transfer and remote sensing, and presents all the instruments and retrieval algorithms in a homogenous manner. The editors provide, for the first time, an easy path from theory to practical algorithms in one easily accessible volume, making the connection between theoretical radiative transfer and individual practical solutions to retrieve aerosol information from remote sensing, and providing the specifics and intercomparison of all current and historical retrieval methods.

Intercomparison of Samplers Used in the Determination of Aerosol Composition

Author : David C. Camp
Publisher :
ISBN 13 :
Total Pages : 143 pages
Book Rating : 4.:/5 (646 download)

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Book Synopsis Intercomparison of Samplers Used in the Determination of Aerosol Composition by : David C. Camp

Download or read book Intercomparison of Samplers Used in the Determination of Aerosol Composition written by David C. Camp and published by . This book was released on 1978 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt:

A Comparison of Two Direct Reading Aerosol Instruments to Each Other and to Various Gravimetric Samplers in Several Different Aerosol Environments

Download A Comparison of Two Direct Reading Aerosol Instruments to Each Other and to Various Gravimetric Samplers in Several Different Aerosol Environments PDF Online Free

Author : Steven Brett Tarkington
Publisher :
ISBN 13 :
Total Pages : 188 pages
Book Rating : 4.:/5 (358 download)

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Book Synopsis A Comparison of Two Direct Reading Aerosol Instruments to Each Other and to Various Gravimetric Samplers in Several Different Aerosol Environments by : Steven Brett Tarkington

Download or read book A Comparison of Two Direct Reading Aerosol Instruments to Each Other and to Various Gravimetric Samplers in Several Different Aerosol Environments written by Steven Brett Tarkington and published by . This book was released on 1996 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Data Reduction Techniques for Aerosol Size Distribution Measuring Instruments

Author : Abde Kapadia
Publisher :
ISBN 13 :
Total Pages : 2 pages
Book Rating : 4.:/5 (3 download)

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Book Synopsis Data Reduction Techniques for Aerosol Size Distribution Measuring Instruments by : Abde Kapadia

Download or read book Data Reduction Techniques for Aerosol Size Distribution Measuring Instruments written by Abde Kapadia and published by . This book was released on 1981 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Aerosol Generation and Calibration of Instruments

Author : David Y. H. Pui
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Aerosol Generation and Calibration of Instruments by : David Y. H. Pui

Download or read book Aerosol Generation and Calibration of Instruments written by David Y. H. Pui and published by . This book was released on 1978 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Aerosol Measurement

Author : Paul A. Baron
Publisher : Wiley-Interscience
ISBN 13 :
Total Pages : 1170 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Aerosol Measurement by : Paul A. Baron

Download or read book Aerosol Measurement written by Paul A. Baron and published by Wiley-Interscience. This book was released on 2001-10 with total page 1170 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, industry has become increasingly interested in modern aerosol measurement methods, not only to protect the health of their workers but also to augment productivity and thereby gain competitive advantage. Aerosol Measurement: Principles, Techniques, and Applications, Second Edition offers scientists and practitioners the fundamental principles used in deciding which aerosol properties to measure and how to interpret the results. Divided into three parts, the material reviews the physical understanding of aerosols, covers specific instrumental techniques, and explains applications in fields ranging from health care to mining and upper-atmosphere research. Leading experts contribute to the review of such areas as direct-reading techniques, bioaerosol sampling, indoor air evaluations, industrial aerosol processing, and measurement in semiconductor clean rooms. Plus, all the chapters in this latest edition have been updated and some have been rewritten by new authors. Two new chapters have been added: one on historical aspects of aerosol measurements and the other on real-time single particle analysis.

Nucleation and Atmospheric Aerosols 1996

Author : M. Kulmala
Publisher : Elsevier
ISBN 13 : 0080537820
Total Pages : 995 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Nucleation and Atmospheric Aerosols 1996 by : M. Kulmala

Download or read book Nucleation and Atmospheric Aerosols 1996 written by M. Kulmala and published by Elsevier. This book was released on 1996-08-13 with total page 995 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is a collection of papers presented at the 14th International Conference on Nucleation and Atmospheric Aerosols, Helsinki, 26 - 30 August 1996. The first conference of this series took place in Dublin (1955); second, Basel and Locarno (1956); third, Cambridge (1958); fourth, Frankfurt am Main and Heidelberg (1961); fifth, Clermont-Ferrand and Tolouse (1963); sixth, Albany and University Park (1966); seventh, Prague and Vienna (1969); eighth, Leningrad (1973); ninth, Galway (1977); tenth, Hamburg (1981); eleventh Budapest (1984); twelfth, Vienna (1988); thirteenth, Salt Lake City (1992). The Atmospheric Aerosol conference has been held jointly with the Nucleation Symposium since 1988 in Vienna in order to stimulate contacts between researchers in these closely related fields. The broad nature of the meeting and the scientific program resulted in 32 countries submitting papers for presentation. Covering both experimental and theoretical studies these papers are divided amongst the chapters on Nucleation, Stratospheric Aerosols and Ice Nucleation, Tropospheric Aerosols and Aerosol-Cloud-Climate Interaction. In addition to these contributed papers invitations to present a plenary lecture on topics of particular current interest were accepted by P.J. Crutzen, J. Gras, J.L. Katz, A.A. Lushnikov, D. Oxtoby, J.E. Penner, Th. Peter, F. Raes, S.E. Schwartz, R. Strey and G. Vali. These plenary papers together with the contributed papers provide a well-balanced perspective of the current research over the entire field and highlight some important issues.

Aerosol Technology

Author : William C. Hinds
Publisher : John Wiley & Sons
ISBN 13 : 1119494060
Total Pages : 452 pages
Book Rating : 4.1/5 (194 download)

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Book Synopsis Aerosol Technology by : William C. Hinds

Download or read book Aerosol Technology written by William C. Hinds and published by John Wiley & Sons. This book was released on 2022-04-20 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: AEROSOL TECHNOLOGY An in-depth and accessible treatment of aerosol theory and its applications The Third Edition of Aerosol Technology: Properties, Behavior, and Measurement of Airborne Particles delivers a thorough and authoritative exploration of modern aerosol theory and its applications. The book offers readers a working knowledge of the topic that reflects the numerous advances that have been made across a broad spectrum of aerosol-related application areas. New updates to the popular text include treatments of nanoparticles, the health effects of atmospheric aerosols, remote sensing, bioaerosols, and low-cost sensors. Additionally, readers will benefit from insightful new discussions of modern instruments. The authors maintain a strong focus on the fundamentals of the discipline, while providing a robust overview of real-world applications of aerosol theory. New exercise problems and examples populate the book, which also includes: Thorough introductions to aerosol technology, key definitions, particle size, shape, density, and concentration, as well as the properties of gases Comprehensive explorations of uniform particle motion, particle size statistics, and straight-line acceleration and curvilinear particle motion Practical discussions of particle adhesion, Brownian motion and diffusion, thermal and radiometric forces, and filtration In-depth examinations of sampling and measurement of concentration, respiratory deposition, coagulation, condensation, evaporation, and atmospheric aerosols Perfect for senior undergraduate and junior graduate students of science and technology, Aerosol Technology: Properties, Behavior, and Measurement of Airborne Particles will also earn a place in the libraries of professionals working in industrial hygiene, air pollution control, climate science, radiation protection, and environmental science.

Biogeochemical Cycles and Climate

Author : A. J. Dolman
Publisher : Oxford University Press, USA
ISBN 13 : 0198779305
Total Pages : 262 pages
Book Rating : 4.1/5 (987 download)

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Book Synopsis Biogeochemical Cycles and Climate by : A. J. Dolman

Download or read book Biogeochemical Cycles and Climate written by A. J. Dolman and published by Oxford University Press, USA. This book was released on 2019 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the interaction of greenhouse gasses with the Earth System. It takes the perspective of the Earth as an integrated system and provides examples of both changes in our current climate and those in the geological past. The book gives a required elementary description of the physics of the earth system, the atmosphere and ocean.

A Comparison of Aerosol Sizing Instruments

Author : Susan Flannery Dixon
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.:/5 (811 download)

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Book Synopsis A Comparison of Aerosol Sizing Instruments by : Susan Flannery Dixon

Download or read book A Comparison of Aerosol Sizing Instruments written by Susan Flannery Dixon and published by . This book was released on 2010 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Summary Report

Author : Climate Monitoring and Diagnostics Laboratory (U.S.)
Publisher :
ISBN 13 :
Total Pages : 196 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Summary Report by : Climate Monitoring and Diagnostics Laboratory (U.S.)

Download or read book Summary Report written by Climate Monitoring and Diagnostics Laboratory (U.S.) and published by . This book was released on with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

An Intercomparison of Aerosol Samplers Used in Western Visibility Studies

Author : John George Watson
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (55 download)

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Book Synopsis An Intercomparison of Aerosol Samplers Used in Western Visibility Studies by : John George Watson

Download or read book An Intercomparison of Aerosol Samplers Used in Western Visibility Studies written by John George Watson and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Particulate Carbon

Author : George T. Wolff
Publisher : Springer
ISBN 13 : 9781468441567
Total Pages : 412 pages
Book Rating : 4.4/5 (415 download)

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Book Synopsis Particulate Carbon by : George T. Wolff

Download or read book Particulate Carbon written by George T. Wolff and published by Springer. This book was released on 2012-04-06 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the papers and discussions from the symposium, "PARTICU LATE CARBON: Atmospheric Life Cycle," held at the General Motors Research Laboratories on October 13-14, 1980. This symposium, which focused on atmospheric particulate elemental carbon, or soot, was the twenty-fifth in this series sponsored by the General Motors Research Laboratories. The present symposium volume contains discussions of the following aspects of particulate elemental carbon (EC): the atmos pheric life cycle of EC including sources, sinks, and transport processes, the role of EC in atmospheric chemistry and optics, the possible role of EC in altering climate, and measurement techniques as well as ambient concentrations in urban, rural, and remote areas. Previous symposia have covered a wide range of scientific and engineering subjects. Topics are selected because they are new or represent rapidly changing fields and are of significant technical importance. It is ironic that the study of particulate elemental carbon or soot should meet the above criteria for selection because soot, especially from coal and wood combustion, has been a recognized air pollutant for centuries. However, since the 1950s, when intense efforts to study air pollution were initiated, to until a few years ago, the role of elemental carbon in the atmosphere was largely ignored. The major reason for this was the lack of a suitable measurement technique.