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Tesis sobre el tema "Aerosols – Optical properties"

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Publicado: 4 de junio de 2021

Última modificación: 6 de septiembre de 2023

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1

Laucks, Mary Lisa. "Quantifying the uncertainties in measurements of aerosol optical properties relevant to the direct shortwave forcing of climate /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/10314.

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2

Farino, John. "Influence of aerosol properties on signals and interferences in optical atomic spectrometry." Diss., Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/30009.

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3

Zhang, Dan. "Laboratory investigation of chemical and physical properties of soot-containing aerosols." Texas A&M University, 2003. http://hdl.handle.net/1969.1/3977.

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Soot particles released from fossil fuel combustion and biomass burning have a large impact on the regional/global climate by altering the atmospheric radiative properties and by serving as cloud condensation nuclei (CCN). However, the exact forcing is affected by the mixing of soot with other aerosol constituents, such as sulfuric acid. In this work, experimental studies have been carried out focusing on three integral parts: (1) heterogeneous uptake of sulfuric acid on soot; (2) hygroscopic growth of H2SO4-coated soot aerosols; (3) effect of H2SO4 coating on scattering and extinction propert

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4

Ripoll, Roca Anna. "Physical, optical and chemical properties of atmospheric aerosols in the western Mediterranean continental background." Doctoral thesis, Universitat de Barcelona, 2015. http://hdl.handle.net/10803/305999.

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Atmospheric aerosols have played a key role in the development of the Earth’s atmosphere. Without atmospheric particles rainfall would be nonexistent and the climate would be very different. However, anthropogenic emissions have changed the chemical composition of atmospheric aerosols significantly through emissions of particles and precursor gases, particularly since the industrial revolution. Moreover, numerous studies have demonstrated that atmospheric aerosols, both natural and anthropogenic, do not only influence Earth’s climate, but also have adverse effects on human health, ecosystems,

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5

Yeung, Ming Chee. "Study of phase transition and hygroscopic properties of pure and multi-component atmospheric particles by optical microscopic imaging and micro-raman spectroscopy /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?EVNG%202009%20YEUNG.

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6

Zhu, Xijing. "Investigation of Aerosol Optical and Chemical Properties Using Humidity Controlled Cavity Ring-Down Spectroscopy." PDXScholar, 2017. https://pdxscholar.library.pdx.edu/open_access_etds/4032.

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Scientists have been observing a change in the climate since the beginning of the 20th century that cannot be attributed to any of the natural influences of the past. Natural and anthropogenic substances and processes perturb the Earth's energy budget, contributing to climate change. In particular, aerosols (particles suspended in air) have long been recognized to be important in processes throughout the atmosphere that affect climate. They directly influence the radiative balance of the Earth's atmosphere, affect cloud formation and properties, and are also key air pollutants that contribute

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7

Liu, Jiumeng. "Chemical and optical properties of organic aerosols in the atmosphere over continental US: formation, partitioning, and light absorption." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50370.

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The chemical and optical properties of particulate organic compounds remain unclear, which leaves large uncertainties in the estimation of global radiative transfer balance. Gas and find particle (PM2.5) phase formic acid concentrations were measured with online instrumentation during separate one-month studies in the summer of 2010 in Los Angeles (LA), CA, and Atlanta, GA, and the gas-particle partitioning behavior was investigated and compared with that of water-soluble organic compounds (WSOC). The diurnal profiles clearly indicated that the photochemistry production serves as a strong sour

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8

Rawle, Christopher B., and n/a. "Coherent multiwavelength sources for tropospheric aerosol lidar." University of Otago. Department of Physics, 2005. http://adt.otago.ac.nz./public/adt-NZDU20070427.114533.

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The monitoring and study of the earth�s atmosphere is becoming an increasingly important task given the current uncertainties in climate prediction. Areas where lidar has been used to further understanding of the atmosphere include monitoring of greenhouse gases, global warming, stratospheric ozone depletion, photochemical smog and aerosol photochemistry. However, the potentially severe long term effects of anthropogenic aerosols on earth�s biosphere are poorly understood. This project seeks to apply state of the art laser technology to develop an innovative multiwavelength lidar system capabl

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9

COSTA, RENATA F. da. "Estudo das propriedades opticas dos aerossois no estado de Sao Paulo com a tecnica de Lidar Raman." reponame:Repositório Institucional do IPEN, 2010. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9586.

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Made available in DSpace on 2014-10-09T12:28:19Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:56:45Z (GMT). No. of bitstreams: 0<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP<br>FAPESP:08/01954-0

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10

SOUZA, RENATA F. de. "Estudo do perfil vertical de aerossóis na troposfera utilizando a técnica de LIDAR." reponame:Repositório Institucional do IPEN, 2004. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9294.

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Made available in DSpace on 2014-10-09T12:25:48Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:03:33Z (GMT). No. of bitstreams: 1 11315.pdf: 4284842 bytes, checksum: 94ad34802b7652ff6ef2b3584c12f794 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares, IPEN/CNEN-SP<br>FAPESP:01/07304-8

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11

Chaudhry, Zahra. "A study of optical, physical and chemical properties of aerosols using in-situ measurements." College Park, Md.: University of Maryland, 2009. http://hdl.handle.net/1903/9512.

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Thesis (Ph.D.) -- University of Maryland, College Park, 2009.<br>Thesis research directed by: Dept. of Atmospheric and Oceanic Sciences. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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12

MELONI, DANIELA. "Optical properties and radiative effects of tropospheric aerosols and ozone in the central mediterranean." Doctoral thesis, La Sapienza, 2005. http://hdl.handle.net/11573/917484.

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The research carried out during the PhD program has had the aim to characterize the radiative field in the Southern sector of the Central Mediterranean, particularly in the ultraviolet (280- 400 nm) and visible (400-700 nm) spectral intervals, to identify the role played by ozone and tropospheric aerosols. This study is based on measurements performed by ground-based, airborne and space-borne instruments, and on their interpretation by means of an accurate radiative transfer model; this approach has the advantage of a more detailed description of atmospheric properties than what could be obtai

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13

Karol, Yana. "Determination of optical and microphysical properties of atmospheric aerosols from multi-wavelength airborne sun photometer." Thesis, Lille 1, 2013. http://www.theses.fr/2013LIL10137/document.

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Les aérosols atmosphériques constituent l’une des plus grandes incertitudes dans l’étude des processus de changement climatique. La diversité des leurs sources et mécanismes de formation rendent la distribution spatiale des aérosols très inhomogène ce qui nécessite la mise en place d’une instrumentation et de méthodes d’observation sophistiquées. Un nouveau photomètre solaire aéroporté PLASMA permet d’effectuer des mesures d’épaisseur optique des aérosols sur une large gamme spectrale (0.34−2.25 μm) et à différentes altitudes. La détermination de la distribution verticale des propriétés optiqu

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14

Schladitz, Alexander. "Parametrization of relative humidity- and wavelength-dependent optical properties of mixed Saharan dust and marine aerosol." Doctoral thesis, Universitätsbibliothek Leipzig, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-70494.

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Aerosol particles interact with sunlight through scattering and absorption and have therefore a direct radiative effect. Hygroscopic aerosol particles take up water and are able to grow in size below 100% relative humidity, which involves the change of optical properties and the direct radiative effect. The change of aerosol optical properties for aerosol mixtures under humidification is presently not well understood, especially for the largest particle sources worldwide. The present PhD-thesis quantifies wavelength- and humidity-dependent aerosol optical properties for a mixture of Saharan mi

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15

Lee, Yong Seob. "Investigation of the optical and cloud forming properties of pollution, biomass burning, and mineral dust aerosols." Texas A&M University, 2003. http://hdl.handle.net/1969.1/3947.

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This dissertation describes the use of measured aerosol size distributions and size-resolved hygroscopic growth to examine the physical and chemical properties of several particle classes. The primary objective of this work was to investigate the optical and cloud forming properties of a range of ambient aerosol types measured in a number of different locations. The tool used for most of these analyses is a differential mobility analyzer / tandem differential mobility analyzer (DMA / TDMA) system developed in our research group. To collect the data described in two of the chapters of this diss

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16

Flores, Jorge Michel [Verfasser]. "Laboratory study on the optical properties of absorbing atmospheric aerosols and field applications / Jorge Michel Flores." Mainz : Universitätsbibliothek Mainz, 2012. http://d-nb.info/102286582X/34.

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17

Radney, James Gregory. "Development of a Nephelometry Camera and Humidity Controlled Cavity Ring-Down Transmissometer for the Measurement of Aerosol Optical Properties." PDXScholar, 2012. https://pdxscholar.library.pdx.edu/open_access_etds/907.

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A Nephelometry camera (NephCam) and Humidity Controlled Cavity Ring-Down Transmissometer (HC-CRDT) were developed for the determination of aerosol optical properties. The NephCams use a reciprocal geometry relative to an integrating nephelometer; a diode laser illuminates a scattering volume orthogonal to a charge coupled device (CCD). The use of a CCD allows for measurement of aerosol scattering in 2 dimensions; scattering coefficients and size information can be extracted. The NephCam's optics were characterized during a set of imaging experiments to optimize the images collected by the came

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18

Targino, Admir Créso. "Regional studies of the optical, chemical and microphysical properties of atmospheric aerosols : Radiative impacts and cloud formation." Doctoral thesis, Stockholm University, Department of Meteorology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-740.

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<p>Atmospheric particles are ubiquitous in the Earth’s atmosphere and have potential to influence atmospheric chemistry, visibility, global climate and human health, particularly downwind from major pollution sources. The main objective of this thesis was to investigate questions pertaining to the microphysical, chemical and optical properties of aerosol particles by using in situ data collected during four experiments carried out in different regions of the Northern Hemisphere.</p><p>The first two papers of this thesis reports on airborne measurements of the aerosol optical properties perform

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19

Targino, Admir Creso. "Regional studies of the optical, chemical and microphysical properties of atmospheric aerosols : radiative impacts and cloud formation /." Stockholm : Dept. of meteorology, Stockholm university, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-740.

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20

Chen, Wei-Ting Wennberg Paul O. Seinfeld John H. "I. Global simulations of interactions between aerosols and future climate and ; II. Sensitivity of multiangle imaging to the optical and microphysical properties of biomass burning aerosols /." Diss., Pasadena, Calif. : California Institute of Technology, 2009. http://resolver.caltech.edu/CaltechETD:etd-12182008-174607.

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21

Taylor, Jonathan William. "Single-particle characterisation of black carbon in urban and biomass burning plumes and impacts on optical properties." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/singleparticle-characterisation-of-black-carbon-in-urban-and-biomass-burning-plumes-and-impacts-on-optical-properties(052eca1a-e907-40a1-8683-695145b97d3d).html.

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Black carbon (BC) is the light-absorbing component of soot, a combustion-generated aerosol that warms the climate by absorbing solar radiation. Its impacts on climate depend on its microphysical properties, which are modified by atmospheric processes including condensation, coagulation and wet removal. State of the art climate models consider soot in a concentric core/shell configuration, with a BC core coated by nonrefractory material such as organics or sulphate. Within this model, thicker coatings enhance visible light absorption, but also wet removal efficiency, and these have opposing eff

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22

Seignovert, Benoît. "Analyse de la couche détachée de Titan à l'aide de l'instrument Cassini/ISS Aerosols optical properties in titan’s detached haze layer before the equinox." Thesis, Reims, 2017. http://www.theses.fr/2017REIMS044.

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Chargée de brume photochimique, l'atmosphère de Titan est le siège d'une activité dynamique complexe évoluant lentement au gré des saisons. Tout comme la couche d'ozone sur Terre, la couche détachée sur Titan est une fine bande d'aérosols englobant la partie la plus externe de son atmosphère. Depuis sa découverte par les sondes Voyager dans les années 80, elle attise les curiosités quant à sa composition et ses mécanismes de formation.Grâce à la sonde Cassini, en orbite autour de Saturne depuis 2004, nous avons une opportunité unique de l'observer sur près d'une demie année titanienne. Cette t

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23

Korgo, Bruno. "Caractérisation optique et microphysique des aérosols atmosphériques en zone urbaine ouest africaine : application aux calculs du forçage radiatif à Ouagadougou." Thesis, Clermont-Ferrand 2, 2014. http://www.theses.fr/2014CLF22509/document.

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Dans cette thèse, nous analysons les principales caractéristiques des aérosols atmosphériques sur un site urbain en Afrique de l’Ouest : la ville de Ouagadougou. Cette analyse est suivie de l’évaluation du forçage radiatif produit par cette population d’aérosols au sommet de l’atmosphère, dans la couche atmosphérique ainsi qu’à la surface terrestre. Une étude climatologique des propriétés optiques (épaisseurs optiques, exposant d’Angström, albédo de simple diffusion, facteur d’asymétrie) et microphysiques (distribution granulométrique, indice complexe de réfraction) a été effectuée sur la base

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24

Brasse, Coralie. "Les aérosols organiques de Titan : leurs propriétés physico-chimiques et leurs possibles évolutions chimiques à la surface." Thesis, Paris Est, 2014. http://www.theses.fr/2014PEST1084/document.

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Titan, la plus grosse lune de Saturne, est l'un des objets planétaires clé dans le domaine de l'exobiologie. Son atmosphère dense et riche en diazote est le siège d'une chimie organique intense. Ce travail de thèse se concentre sur les aérosols organiques produits dans son atmosphère. Ces derniers jouent un rôle essentiel dans l'évolution de l'atmosphère et de la surface du satellite mais aussi dans sa chimie organique d'intérêt exobiologique. Dans un premier temps, afin de disposer d'analogues de laboratoires (« tholins ») fiables de ces aérosols, un dispositif permettant d'obtenir des tholin

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25

Wurl, Daniela. "Optimal Estimation Retrieval of Aerosol Microphysical Properties in the Lower Stratosphere from SAGE II Satellite Observations." Thesis, University of Canterbury. Physics and Astronomy, 2007. http://hdl.handle.net/10092/1533.

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A new retrieval algorithm has been developed based on the Optimal Estimation (OE) approach, which retrieves lognormal aerosol size distribution parameters from multiwavelength aerosol extinction data, as measured by the Stratospheric Aerosol and Gas Experiment (SAGE) II in the lower stratosphere. Retrieving these aerosol properties becomes increasingly more difficult under aerosol background conditions, when tiny particles (« 0.1 µm) prevail, to which the experiment is nearly or entirely insensitive. A successful retrieval algorithm must then be able (a) to fill the 'blind spot' with suitable

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26

Chauvigné, Aurélien. "Impact radiatif des aérosols de haute altitude." Thesis, Clermont-Ferrand 2, 2016. http://www.theses.fr/2016CLF22757/document.

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La présence des particules d’aérosols dans l’atmosphère influencent le bilan radiatif de notre planète et ainsi son équilibre climatique. Selon les différents mécanismes d’émission et processus de transports atmosphériques, les aérosols peuvent être entrainés dans la troposphère libre et ainsi y résider pendant plusieurs semaines. Les contributions optiques et radiatives des aérosols de troposphère libre par rapport à celles de la colonne atmosphérique sont encore mal évaluées du fait de la difficulté d’accès et du manque de mesures sur de longues périodes. Ces travaux de thèse se sont donc ap

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27

Wang, Shuo. "Retrieval of Aerosol Chemical Composition based on aerosol optical properties." Thesis, Littoral, 2020. https://tel.archives-ouvertes.fr/tel-03178823.

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La composition chimique des aérosols permet de mieux comprendre leurs interactions avec le changement climatique et la santé humaine. La composition chimique des aérosols est étroitement liée aux propriétés optiques. Actuellement, les propriétés optiques des aérosols sont mesurées, intégrées ou non sur la colonne atmosphérique, à une échelle globale. Le développement d'algorithmes permettant de déterminer, à une résolution spatiale et temporelle élevée, la composition chimique des aérosols à partir de leurs propriétés optiques est essentiel. Ce travail de thèse vise à tester et à améliorer les

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28

Reed, Benjamin Edward. "Measurements of the complex refractive index of volcanic ash." Thesis, University of Oxford, 2016. http://ora.ox.ac.uk/objects/uuid:6df66964-7e17-4ef5-a984-9a863a74e4e6.

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This thesis describes laboratory measurements of the complex refractive index of volcanic ash particles. These measurements are needed to model the radiative impact of volcanic ash, vital for accurate satellite remote sensing. Three experimental methods have been developed, and the results for the complex refractive index and optical properties of a wide range of volcanic ash samples are presented. Measurements were made of the spectral transmission of radiation through suspended volcanic ash particles inside an aerosol cell, using a Fourier transform spectrometer at infrared wavelengths and t

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29

Bulgin, Claire Elizabeth. "Improved understanding of aerosol processes using satellite observations of aerosol optical properties." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4906.

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Atmospheric aerosols are the largest remaining uncertainty in the Earth’s radiative budget and it is important that we improve our knowledge of aerosol processes if we are to understand current radiative forcing and accurately project changes in future climate. Aerosols affect the radiation balance directly through the absorption and scattering of incoming solar radiation and indirectly through the modification of cloud microphysical properties. Understanding aerosol forcing remains challenging due to the short atmospheric residence time of aerosols resulting in large spatial and temporal hete

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30

Taubman, Brett F. "Airborne characterization of regional aerosol origins and optical properties." College Park, Md. : University of Maryland, 2004. http://hdl.handle.net/1903/1893.

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Thesis (Ph. D.)--University of Maryland, College Park, 2004.<br>Thesis research directed by: Chemistry. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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31

Kameel, Fathima R. "Optical Properties and Chemical Composition of Secondary Organic Aerosol." Kent State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=kent1240332384.

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32

Donth, Tobias, Evelyn Jäkel, Britta Mey, and Manfred Wendisch. "Derivation of aerosol optical properties using ground-based radiation measurements." Universität Leipzig, 2016. https://ul.qucosa.de/id/qucosa%3A16701.

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The knowledge of the optical and microphysical properties of aerosol particles in the atmosphere is relevant in various scientific fields from public health issues to climate modeling. A retrieval method is presented that estimates the single scattering albedo and asymmetry parameter of aerosol particles in regions of high pollution using spectral ground-based radiance and irradiance measurements, radiative transfer simulations, and a priori knowledge of the aerosol optical depth (AOD) derived from sun photometer observations. The used measurement data originated from the Pearl River Delta in

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33

Kwon, Deokhyeon. "Optical and physicochemical properties of secondary organic aerosol and aerosol generated from humic substances." Diss., University of Iowa, 2018. https://ir.uiowa.edu/etd/6455.

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A great deal of attention has been paid to brown carbon aerosol in the troposphere because it can both scatter and absorb solar radiation, thus affecting the Earth’s climate. However, knowledge of the optical and chemical properties of brown carbon aerosol is still limited. In this thesis, we have investigated different aspects of the optical and physicochemical properties of various brown carbon aerosol samples of potential atmospheric importance. First, reactions involving the di-carbonyl species methylglyoxal (MG) have been previously suggested as an important pathway for the production of

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34

Martins, Jose Vanderlei. "O Efeito de Partículas de Aerossol de Queimadas da Amazônia no Balanço Radiativo da Atmosfera." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/43/43131/tde-20072012-121657/.

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Medidas in situ na Bacia Amazônica mostraram uma grande variedade de partículas de aerossol provenientes principalmente de fontes biogênicas e de queimadas. Partículas de queimadas foram estudadas em detalhe e são compostas de misturas de partículas esféricas e não esféricas, e aglomerados de até milhares de esferas nanométricas de \"black carbon\" PC). A forma e a estrutura macroscópica das partículas de queimadas são determinadas pelo tipo de combustíve1 queimado, pel0 tipo de combustição e pela \"idade\" das partículas. A estrutura macroscópica das partículas muda em função de suas interaçõ

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35

Wang, Gaoxuan. "Development of photonic instruments for measurement of aerosol optical properties." Thesis, Littoral, 2018. http://www.theses.fr/2018DUNK0470.

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À cause de leur diffusion et de leur absorption des radiations solaires, les aérosols atmosphériques jouent un rôle important dans l'évolution du climat terrestre. Les techniques de mesure actuelles apportent certes, des connaissances, sur le forçage radiatif mais les résultats possèdent généralement de larges incertitudes, souvent du même ordre de grandeur que la valeur elle-même. Ces incertitudes sont causées par le manque de précision sur les données liées aux propriétés optiques estimées de ces aérosols (comme l'absorption, la diffusion ou l'extinction). Elles découlent principalement des

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36

Kumharn, Wilawan. "Assessing the role of Brewer spectrophotometer in determining aerosol optical properties in the UK and tropics." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/assessing-the-role-of-brewer-spectrophotometer-in-determining-aerosol-optical-properties-in-the-uk-and-tropics(8ce05bf5-da02-45ce-8118-2d9d8c39ace8).html.

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Aerosol effects are one of the major uncertainties in assessing global climate change, ecosystem processes and human health. This is because they critically change the balance between the radiation entering and leaving the atmosphere, as well as influencing cloud formation and having direct effects on biological systems e.g. through the respiratory system. It is the direct radiative effects of aerosol that are the focus of this work. The Aerosol Optical Depth (AOD) is a measure of the extinction of radiation by aerosol throughout the depth of the atmosphere. It is wavelength dependent and is t

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37

Brooke, Jennifer Kathleen. "Airborne observations of the physical and optical properties of atmospheric aerosol." Thesis, University of Leeds, 2014. http://etheses.whiterose.ac.uk/7540/.

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Aerosols have a significant influence on both human health and global climate, and are associated with a potentially important role in future climate change. The microphysical and optical properties of aerosols need to be well quantified to understand the radiative impact, important in weather and climate models. This work focuses on two globally significant species from two different aircraft campaigns, mineral dust and biomass burning aerosol. An analysis is presented of mineral dust properties from the Saharan region during the Fennec campaign in June 2011 and 2012. In making observations i

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38

Bouya, Zahra Physics Faculty of Science UNSW. "A study of aerosol optical and physical properties in Darwin, Australia." Awarded by:University of New South Wales. Physics, 2008. http://handle.unsw.edu.au/1959.4/41520.

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This thesis presents the analysis and results of aerosol physical and optical properties over Darwin, Australia, a coastal tropical site which is affected by smoke aerosols from biomass burning inland and sea salt aerosols brought in by the sea breeze. Continuous Multi Filter Rotating Shadow Radiometer (MFRSR) spectral measurements for the period March 2002 -June 2003, have been obtained from the Tropical Western Pacific facilities site in Darwin, part of the D.S. Department of Energy Atmospheric Radiation Measurement (ARM) Program. Atmospheric optical thickness was obtained using the Langley

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39

VALENTINI, SARA. "EXPERIMENTAL AND MODELLING APPROACHES TO INVESTIGATE OPTICAL PROPERTIES OF ATMOSPHERIC AEROSOL." Doctoral thesis, Università degli Studi di Milano, 2019. http://hdl.handle.net/2434/688089.

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The aerosol scientific community has a strong interest in improving knowledge about aerosol physical-chemical properties and measurement methodologies due to the large uncertainties still affecting estimates of aerosol optical properties and their impact on climate, visibility, and air quality. Therefore, in this PhD work, the contribution to this research field was mainly devoted to the study and implementation of experimental and modelling approaches aiming at filling some gaps in the current knowledge about absorption and scattering properties of atmospheric aerosols. On-line and off-line

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Tesche, Matthias. "Vertical profiling of aerosol optical properties with multiwavelength aerosol lidar during the Saharan Mineral Dust Experiments." Doctoral thesis, Universitätsbibliothek Leipzig, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-71257.

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Die vorliegende Arbeit beschäftigt sich mit der Auswertung und den Ergebnissen von Mehrwellenlängen–Polarisations–Ramanlidarmessungen, die im Rahmen des Saharastaubschließungsexperiments Saharan Mineral Dust Experiment (SAMUM) durchgeführt wurden. Das SAMUM–Projekt erstreckte sich über zwei Intensivmesszeiträume im Mai und Juni 2006 in Marokko (SAMUM–1) und im Januar und Februar 2008 auf den Kapverdischen Inseln (SAMUM–2). Desweiteren werden zusätzliche Lidarmessungen besprochen, die im Mai und Juni 2008 auf den Kapverdischen Inseln durchgeführt wurden. Die geometrischen und optischen Eigensch

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Allen, Christopher Lee. "The seasonality of aerosol properties in Big Bend National Park." Texas A&M University, 2005. http://hdl.handle.net/1969.1/4678.

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Two-week sampling periods during the spring, summer, and fall of 2003, and the winter of 2004 were conducted utilizing a tandem differential mobility analyzer (TDMA) and, during the spring and summer, an aerodynamic particle sizer (APS), to characterize the seasonal variability of the Big Bend regions aerosol optical properties. Mass extinction efficiencies and relative humidity scattering enhancement factors were calculated for both externally and internally mixed aerosol populations for all size distributions collected, in an effort to possibly improve upon the default EPA mass extinction ef

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Moffet, Ryan Christopher. "Measurements of the chemical, physical, and optical properties of single aerosol particles." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2007. http://wwwlib.umi.com/cr/ucsd/fullcit?p3266783.

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Thesis (Ph. D.)--University of California, San Diego, 2007.<br>Title from first page of PDF file (viewed April 9, 2008). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references.

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Butler, Timothy Joseph Alexander. "Cavity enhanced spectroscopy methods for measurement of optical properties of aerosol particles." Thesis, University of Bristol, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492653.

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A continuous wave distributed feedback diode laser operating in the near infrared at wavelengths close to 1650 nm has been used to measure the extinction of light by aerosol particles. The technique of optical feedback cavity ring-down spectroscopy (OF-CRDS) was used to enable measurement of CRDS events at a repetition rate of 1.25 kHz.

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Höller, Robert. "Studies of the Optical Properties and Climatic Relevance of the Atmospheric Aerosol in Japan." Kyoto University, 2000. http://hdl.handle.net/2433/151383.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(エネルギー科学)<br>甲第8600号<br>エネ博第20号<br>新制||エネ||7(附属図書館)<br>UT51-2000-P653<br>京都大学大学院エネルギー科学研究科エネルギー社会・環境科学専攻<br>(主査)教授笠原三紀夫, 教授吉川榮和, 教授東野達<br>学位規則第4条第1項該当

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Saliba, Georges. "Emissions and Climate Impacts of Aerosol Emissions from Cookstoves and Gasoline Direct Injection Vehicles." Research Showcase @ CMU, 2018. http://repository.cmu.edu/dissertations/1126.

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Anthropogenic gas- and particle-phase emissions affect the climate by absorbing and scattering radiation, and have been linked to adverse health effects. Black carbon (BC), a by-product of incomplete combustion, is the most potent light-absorbing component of atmospheric aerosols, with a top-of-the atmosphere direct radiative forcing estimated to be only second to CO2. However, there is a large uncertainty associated with BC’s total direct and indirect radiative forcings due to uncertain source emissions and optical properties and complex interactions with clouds. In this dissertation we inves

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Nichman, Leonid. "Optical measurements of the microphysical properties of aerosol and small cloud particles in the CLOUD project." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/optical-measurements-of-the-microphysical-properties-of-aerosol-and-small-cloud-particles-in-the-cloud-project(ad792d0c-90d1-4704-b666-b75d284b40fe).html.

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Clouds play an important role in precipitation, solar radiation budget and electrification of Earth's atmosphere. The presence of small ice crystals in clouds and their morphology can complicate parametrisation and climate modelling, consequently leading to a net cooling feedback on climate. In situ airborne measurements provide single particle characterisation with high temporal and spatial resolution allowing better understanding of atmosphericprocesses of ice nucleation and growth. Simulations of the preindustrial clouds and accurate characterisation and comparison of the instruments requir

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Gasparini, Roberto. "Developing models of aerosol representation to investigate composition, evolution, optical properties, and CCN spectra using measurements of size-resolved hygroscopicity." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/3878.

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A Differential Mobility Analyzer/Tandem Differential Mobility Analyzer (DMA/TDMA) was used to measure size distributions, hygroscopicity, and volatility during the May 2003 Aerosol Intensive Operational Period at the Central Facility of the Atmospheric Radiation Measurement Southern Great Plains site. Hygroscopic growth factor distributions for particles at eight dry diameters ranging from 0.012 Âµm to 0.600 Âµm were measured. These measurements, along with backtrajectory clustering, were used to infer aerosol composition and evolution. The hygroscopic growth of the smallest and largest partic

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Brown, Brian B. "Remote measurement of aerosol optical properties using the NOAA POES AVHRR and GOES Imager during TARFOX." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1997. http://handle.dtic.mil/100.2/ADA330929.

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Thesis (M.S. in Meteorology and Physical Oceanography) Naval Postgraduate School, June 1997.<br>Thesis advisors, Philip A. Durkee and Carlyle H. Wash. AD-A330 929. Includes bibliographical references (p. 71-72). Also available online.

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Lei, Ziying. "Investigation of Optical Properties of Size-Selected Black Carbon Under Controlled Laboratory Conditions." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1480623077018431.

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Smith, Peter J. "Remote measurement of aerosol optical properties using the NOAA POES AVHRR during ACE-1, TARFOX and ACE-2." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1998. http://handle.dtic.mil/100.2/ADA359853.

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Thesis (M.S. in Meteorology and Physical Oceanography) Naval Postgraduate School, December 1998.<br>"December 1998." Thesis advisor(s): Philip A. Durkee. Includes bibliographical references (p. 55-58). Also available online.

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