Investigation of Hygroscopic and Morphological Properties of Atmospheric Aerosols PDF Download
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Author: Laura B. Cook
Publisher:
ISBN:
Category : Aerosols
Languages : en
Pages : 153
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Book Description
Examines the hygroscopic and morphological nature of various substances through the use of an Environmental Scanning Electron Microscope (ESEM). The hygroscopic growth and changes in morphology for pure-component aerosols were studied for particles size. Hygroscopic growth was observed through changes in relative humidity (RH) and hygroscopic growth curves were created. the hygroscopic growth of multi-component aerosol mixtures was studied using Hygroscopic Tandem Differential Mobility Analysis (HTDMA) . The size distribution for an aerosol stream was determined before and after the stream was subjected to an increase in relative humidity.
Author: Laura B. Cook
Publisher:
ISBN:
Category : Aerosols
Languages : en
Pages : 153
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Book Description
Examines the hygroscopic and morphological nature of various substances through the use of an Environmental Scanning Electron Microscope (ESEM). The hygroscopic growth and changes in morphology for pure-component aerosols were studied for particles size. Hygroscopic growth was observed through changes in relative humidity (RH) and hygroscopic growth curves were created. the hygroscopic growth of multi-component aerosol mixtures was studied using Hygroscopic Tandem Differential Mobility Analysis (HTDMA) . The size distribution for an aerosol stream was determined before and after the stream was subjected to an increase in relative humidity.
Author: Bernard G. Mendonça
Publisher:
ISBN:
Category : Aerosols
Languages : en
Pages : 36
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Book Description
This report was adapted from a Master's thesis supported by an ERL long-term University assignment at Colorado State University Fort Collins, Colorado pg. ii
Author: Kirill Ya. Kondratyev
Publisher: Springer Science & Business Media
ISBN: 3540376984
Category : Science
Languages : en
Pages : 595
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Book Description
This book provides the first comprehensive analysis of how aerosols form in the atmosphere through in situ processes as well as via transport from the surface (dust storms, seas spray, biogenic emissions, forest fires etc.). Such an analysis has been followed by the consideration of both observation data (various field observational experiments) and numerical modeling results to assess climate impacts of aerosols bearing in mind that these impacts are the most significant uncertainty in studying natural and anthropogenic causes of climate change.
Author: Danielle El Hajj
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Aerosols play vital roles in energy balance of the Earth and also have a significant impact on human health. The last assessment report by the Intergovernmental Panel on Climate Change (IPCC), states that the uncertainty in the total radiative forcing is mainly dominated by the high uncertainty in the aerosol radiative forcing. This is mainly caused by the poorly understood and quantified aerosol effects. Indeed, high relative humidity (RH), promotes water uptake by atmospheric aerosol particles, which modifies their size, morphology and chemical composition and therefore their optical properties. In-situ measurements of aerosols properties (scattering and absorption coefficients, size distribution) are usually performed at dry conditions (RH
Author: Richard H. Moore
Publisher:
ISBN:
Category : Aerosols
Languages : en
Pages : 224
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Book Description
Examines the hygroscopic properties of increasingly complex, and thus increasingly realistic, aerosols. This was accomplished in three different experimental investigations. Initially, single-component aerosols were examined. Then, multi-component organic aerosols were characterized. Finally, ambient aerosols were collected in the field and analyzed.
Author: Alan P. Waggoner
Publisher:
ISBN:
Category : Aerosols
Languages : en
Pages : 56
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Book Description
Author: Kirill Ya. Kondratyev
Publisher: Springer
ISBN: 9783540262633
Category : Science
Languages : en
Pages : 572
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Book Description
This book provides the first comprehensive analysis of how aerosols form in the atmosphere through in situ processes as well as via transport from the surface (dust storms, seas spray, biogenic emissions, forest fires etc.). Such an analysis has been followed by the consideration of both observation data (various field observational experiments) and numerical modeling results to assess climate impacts of aerosols bearing in mind that these impacts are the most significant uncertainty in studying natural and anthropogenic causes of climate change.
Author: George T. Wolff
Publisher: Springer
ISBN: 9781468441567
Category : Science
Languages : en
Pages : 412
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Book Description
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.
Author: Yue Zhang
Publisher: American Chemical Society
ISBN: 0841299293
Category : Science
Languages : en
Pages : 176
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Book Description
The uncertainties in the aerosol effects on radiative forcing limit our knowledge of climate change, presenting us with an important research challenge. Aerosols in Atmospheric Chemistry introduces basic concepts about the characterization, formation, and impacts of ambient aerosol particles as an introduction to graduate students new to the field. Each chapter also provides an up-to-date synopsis of the latest knowledge of aerosol particles in atmospheric chemistry.
Author: David Marchese
Publisher:
ISBN:
Category : Aerosols
Languages : en
Pages : 90
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Book Description
The primary objectives of this thesis were to use atomic force microscopy to determine the morphology of atmospherically relevant aerosols and to investigate the utility of environmental atomic force microscopy for imaging aerosols as they respond to changes in relative humidity. The results of this research demonstrated the utility of atomic force microscopy for measuring the morphology of aerosols.
