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University of Manchester
1.
Jolleys, Matthew.
A global analysis of biomass burning organic aerosol.
Degree: PhD, 2013, University of Manchester
URL: https://www.research.manchester.ac.uk/portal/en/theses/a-global-analysis-of-biomass-burning-organic-aerosol(6dbebe3d-fb4a-4d68-b6c7-83c32ae3fa52).html
;
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607109
► Organic aerosols represent one of the main sources of uncertainty affecting attempts to quantify anthropogenic climate change. The diverse physical and chemical properties of organic…
(more)
▼ Organic aerosols represent one of the main sources of uncertainty affecting attempts to quantify anthropogenic climate change. The diverse physical and chemical properties of organic aerosols and the varied pathways involved in their formation and aging form the basis of this uncertainty, preventing extensive and accurate representation within regional and global scale models. This inability to constrain the radiative forcings produced by organic aerosols within the atmosphere consequently acts as a limitation to the wider objective of providing reliable projections of future climate. Biomass burning constitutes one of the main anthropogenic contributions to the global atmospheric organic aerosol (OA) burden, particularly in tropical regions where the potential for perturbations to the climate system is also enhanced due to higher average levels of solar irradiance. Emissions from biomass burning have been the subject of an intense research focus in recent years, involving a combination of field campaigns and laboratory studies. These experiments have aimed to improve the limited understanding of the processes involved in the evolution of biomass burning organic aerosol (BBOA) and contribute towards the development of more robust parameterisations for climate and chemical transport models. The main objective of this thesis was to use datasets acquired from several different global regions to perform a broad analysis of the BBOA fraction, with the extensive temporal and spatial scales provided by such measurements enabling investigation of a number of key uncertainties, including regional variability in emissions and the role of secondary organic aerosol (SOA) formation in aging smoke plumes. Measurements of BBOA mass concentration obtained using Aerodyne Research Inc. Aerosol Mass Spectrometers (AMS) were used to calculate characteristic ΔOA/ΔCO ratios for different environments, accounting for the effects of dilution and contrasting fire sizes to give a proportional representation of OA production. High levels of variability in average ΔOA/ΔCO were observed both between and within different regions. The scale of this variability consistently exceeded any differences between plumes of different ages, while a widespread absence of any sustained increase in ΔOA/ΔCO with aging indicates that SOA formation does not provide a net increase in OA mass. Despite this lack of OA enhancement, increasing proportions of oxygenated OA components in aged plumes highlight the chemical transformations occurring during the evolution of BBOA, and the additional influence of OA loss through evaporation or deposition. Potential drivers of variability in ΔOA/ΔCO at source, such as changes in fuel types and combustion conditions, were investigated for controlled fires carried out within a combustion chamber. These laboratory experiments revealed a number of complex relationships between BB emissions and source conditions. Although ΔOA/ΔCO was shown to be influenced by both fuel properties and transitions between flaming and smouldering…
Subjects/Keywords: 621.3815; biomass burning; organic aerosol; emission ratios; aerosol mass spectrometer; aircraft measurements; field campaigns; combustion chamber; aerosol aging
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APA (6th Edition):
Jolleys, M. (2013). A global analysis of biomass burning organic aerosol. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/a-global-analysis-of-biomass-burning-organic-aerosol(6dbebe3d-fb4a-4d68-b6c7-83c32ae3fa52).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607109
Chicago Manual of Style (16th Edition):
Jolleys, Matthew. “A global analysis of biomass burning organic aerosol.” 2013. Doctoral Dissertation, University of Manchester. Accessed March 02, 2021.
https://www.research.manchester.ac.uk/portal/en/theses/a-global-analysis-of-biomass-burning-organic-aerosol(6dbebe3d-fb4a-4d68-b6c7-83c32ae3fa52).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607109.
MLA Handbook (7th Edition):
Jolleys, Matthew. “A global analysis of biomass burning organic aerosol.” 2013. Web. 02 Mar 2021.
Vancouver:
Jolleys M. A global analysis of biomass burning organic aerosol. [Internet] [Doctoral dissertation]. University of Manchester; 2013. [cited 2021 Mar 02].
Available from: https://www.research.manchester.ac.uk/portal/en/theses/a-global-analysis-of-biomass-burning-organic-aerosol(6dbebe3d-fb4a-4d68-b6c7-83c32ae3fa52).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607109.
Council of Science Editors:
Jolleys M. A global analysis of biomass burning organic aerosol. [Doctoral Dissertation]. University of Manchester; 2013. Available from: https://www.research.manchester.ac.uk/portal/en/theses/a-global-analysis-of-biomass-burning-organic-aerosol(6dbebe3d-fb4a-4d68-b6c7-83c32ae3fa52).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607109

University of Arizona
2.
Tang, Wenfu.
Global Modeling and Analysis of Anthropogenic Combustion and Associated Emissions
.
Degree: 2019, University of Arizona
URL: http://hdl.handle.net/10150/633075
► Anthropogenic combustion and associated emissions have significant impacts on air quality and climate. However, current estimates of emissions from anthropogenic combustion are still subject to…
(more)
▼ Anthropogenic combustion and associated emissions have significant impacts on air quality and climate. However, current estimates of emissions from anthropogenic combustion are still
subject to large uncertainties, especially in rapidly-developing regions. This hinders accurate assessments of their regional and global impacts on air quality and climate, which presents an urgent need to understand, assess, monitor, and predict anthropogenic combustion and associated emissions particularly at city-to-national scales. Combustion products co-emitted to the atmosphere and their relationships are typically related to characteristics of combustion processes. Thus, in order to understand anthropogenic combustion and associated emissions, my PhD study seeks to answer three major scientific questions: (1) To what extent could current observations of trace gases co-emitted from combustion be used to understand anthropogenic combustion, emissions, and related driving factors? (2) How well do present global climate-chemistry models simulate trace gases from combustion activities and could those models be used to study anthropogenic emissions? (3) To what extent could the current understanding of anthropogenic combustion and emissions be improved by jointly analyzing satellite, ground-based, aircraft measurements, and model simulations of trace gases co-emitted from combustion?
To address the first scientific question, I combine air pollution measurements from multiple satellite instruments across 2005-2014 to characterize emergent features of the ratios of carbon monoxide (CO) and sulfate dioxide (SO2) to nitrogen dioxide (NO2) enhancements from anthropogenic emissions over 36 cities in China. The resulting emission pattern is well-correlated with economic development and traces a common emission pathway that resembles the evolution of air pollution in more developed cities. The absence of this progression in the current IPCC Representative Concentration Pathway emission inventory is most likely due to its deficient representation of the shift towards cleaner combustion in more developed cities. The results highlight the usefulness of augmenting observational capabilities by exploiting relationships of combustion tracers in constraining the temporal variation of emissions for gaseous pollutants.
In addition, it is also desired to monitor and assess anthropogenic combustion and its impacts through modeling. Thus, to address the second scientific question, I evaluate simulations of two important anthropogenic combustion products (carbon dioxide (CO2) and CO) from a state-of-the-art high-resolution global prediction system, the Copernicus Atmosphere Monitoring Service (CAMS), by comparing with the Korea-United States Air Quality (KORUS-AQ)
field measurements (May to June 2016) that aims to understand the factors controlling air quality over East Asia. The results show a slight overestimation for CAMS CO2 and a moderate underestimation for CAMS CO. CAMS also captures the observed more efficient combustion over Seoul compared to…
Advisors/Committee Members: Arellano, Avelino F (advisor), Emmons, Louisa K. (committeemember), Zeng, Xubin (committeemember), Betterton, Eric A. (committeemember).
Subjects/Keywords: Air quality field campaigns;
Anthropogenic emissions;
Atmospheric chemistry modeling;
KORUS-AQ;
Satellite observations of atmospheric composition
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Tang, W. (2019). Global Modeling and Analysis of Anthropogenic Combustion and Associated Emissions
. (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/633075
Chicago Manual of Style (16th Edition):
Tang, Wenfu. “Global Modeling and Analysis of Anthropogenic Combustion and Associated Emissions
.” 2019. Doctoral Dissertation, University of Arizona. Accessed March 02, 2021.
http://hdl.handle.net/10150/633075.
MLA Handbook (7th Edition):
Tang, Wenfu. “Global Modeling and Analysis of Anthropogenic Combustion and Associated Emissions
.” 2019. Web. 02 Mar 2021.
Vancouver:
Tang W. Global Modeling and Analysis of Anthropogenic Combustion and Associated Emissions
. [Internet] [Doctoral dissertation]. University of Arizona; 2019. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/10150/633075.
Council of Science Editors:
Tang W. Global Modeling and Analysis of Anthropogenic Combustion and Associated Emissions
. [Doctoral Dissertation]. University of Arizona; 2019. Available from: http://hdl.handle.net/10150/633075
3.
Albinet, Clément.
Sensibilité des observables radars à la variabilité temporelle et à la configuration géométrique de forêts tempérées et tropicales à partir de mesure de proximité haute-résolution : Radar data sensitivity to the temporal variability and the geometrical configuration of temperate and tropical forests from in-situ high resolution measurements.
Degree: Docteur es, Traitement du signal et télécommunications, 2013, Rennes 1
URL: http://www.theses.fr/2013REN1S153
► L'augmentation importante de la population mondiale, et par conséquent de ses besoins, exerce une pression de plus en plus importante sur les surfaces forestières. L'outil…
(more)
▼ L'augmentation importante de la population mondiale, et par conséquent de ses besoins, exerce une pression de plus en plus importante sur les surfaces forestières. L'outil le mieux adapté au suivi des forêts, à l'échelle du globe, est la télédétection. C'est dans ce contexte que se situe ce travail de thèse, qui vise à améliorer l'estimation des paramètres biophysiques des arbres à partir de données de télédétection. L'originalité de ce travail a été d'étudier cette estimation des paramètres biophysiques en menant plusieurs études de sensibilité avec une démarche expérimentale sur des données expérimentales et sur des données simulées. Tout d'abord, l'étude s'est portée sur des séries temporelles de mesures de diffusiométrie radar obtenues sur deux sites : l'un constitué d'un cèdre en zone tempérée et l'autre d'une parcelle de forêt tropicale. Puis, cette étude de sensibilité a été poursuivie en imageant, avec une résolution élevée, plusieurs parcelles aux configurations différentes à l'intérieur d'une forêt de pin. Enfin, des données optiques et radars simulées ont été fusionnés afin d'évaluer l'apport de la fusion de données optique et radar dans l'inversion des paramètres biophysiques.
The significant increase of the world population, and therefore its needs, pushes increasingly high in forest areas. The best tool for monitoring forest across the globe is remote sensing. It is in this context that this thesis, which aims to improve the retrieval of biophysical parameters of trees from remote sensing data, takes place. The originality of this work was to study the estimation of biophysical parameters across multiple sensitivity studies on experimental data and simulated data. First, the study focused on the time series of radar scatterometry measurements obtained on two sites: one characterized by a cedar in the temperate zone and the other by a forest plot of rainforest. Then, the sensitivity analysis was continued by imaging with high resolution, several forest plots with different configurations within a pine forest. Finally, simulated radar and optical data were combined to evaluate the contribution of optical and radar data fusion in the inversion of biophysical parameters.
Advisors/Committee Members: Pottier, Éric (thesis director), Borderies, Pierre (thesis director).
Subjects/Keywords: Télédétection radar; Télédétection hyperspectrale; Forêts tropicales et tempérées; Campagnes terrain; Modélisation; Radar remote sensing; Hyperspectral remote sensing; Tropical and temperate forests; Field campaigns; Modeling
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Albinet, C. (2013). Sensibilité des observables radars à la variabilité temporelle et à la configuration géométrique de forêts tempérées et tropicales à partir de mesure de proximité haute-résolution : Radar data sensitivity to the temporal variability and the geometrical configuration of temperate and tropical forests from in-situ high resolution measurements. (Doctoral Dissertation). Rennes 1. Retrieved from http://www.theses.fr/2013REN1S153
Chicago Manual of Style (16th Edition):
Albinet, Clément. “Sensibilité des observables radars à la variabilité temporelle et à la configuration géométrique de forêts tempérées et tropicales à partir de mesure de proximité haute-résolution : Radar data sensitivity to the temporal variability and the geometrical configuration of temperate and tropical forests from in-situ high resolution measurements.” 2013. Doctoral Dissertation, Rennes 1. Accessed March 02, 2021.
http://www.theses.fr/2013REN1S153.
MLA Handbook (7th Edition):
Albinet, Clément. “Sensibilité des observables radars à la variabilité temporelle et à la configuration géométrique de forêts tempérées et tropicales à partir de mesure de proximité haute-résolution : Radar data sensitivity to the temporal variability and the geometrical configuration of temperate and tropical forests from in-situ high resolution measurements.” 2013. Web. 02 Mar 2021.
Vancouver:
Albinet C. Sensibilité des observables radars à la variabilité temporelle et à la configuration géométrique de forêts tempérées et tropicales à partir de mesure de proximité haute-résolution : Radar data sensitivity to the temporal variability and the geometrical configuration of temperate and tropical forests from in-situ high resolution measurements. [Internet] [Doctoral dissertation]. Rennes 1; 2013. [cited 2021 Mar 02].
Available from: http://www.theses.fr/2013REN1S153.
Council of Science Editors:
Albinet C. Sensibilité des observables radars à la variabilité temporelle et à la configuration géométrique de forêts tempérées et tropicales à partir de mesure de proximité haute-résolution : Radar data sensitivity to the temporal variability and the geometrical configuration of temperate and tropical forests from in-situ high resolution measurements. [Doctoral Dissertation]. Rennes 1; 2013. Available from: http://www.theses.fr/2013REN1S153

Université de Bordeaux I
4.
Ringuet, Johany.
Dérivés oxygénés et nitrés des hydrocarbures aromatiques polycycliques (OHAP/NHAP) en phase particulaire : granulométrie et devenir dans l’atmosphère (formation/dégradation) : Multi-scale approach of the atmospheric new secondary particle formation.
Degree: Docteur es, Chimie analytique et environnement, 2012, Université de Bordeaux I
URL: http://www.theses.fr/2012BOR14504
► Les Hydrocarbures Aromatiques Polycycliques (HAP) sont des polluants dont la concentration est réglementée dans l’air ambiant, en raison de leurs caractères cancérigène et/ou mutagène. Ces…
(more)
▼ Les Hydrocarbures Aromatiques Polycycliques (HAP) sont des polluants dont la concentration est réglementée dans l’air ambiant, en raison de leurs caractères cancérigène et/ou mutagène. Ces composés, émis lors de combustions incomplètes, peuvent réagir dans l’atmosphère avec les principaux oxydants atmosphériques pour former des dérivés oxygénés (OHAP) et nitrés (NHAP), dont la toxicité est potentiellement encore plus importante. Dans ce contexte, ce travail a été réalisé par la combinaison de deux approches complémentaires : études de réactivité en atmosphère contrôlée et études de terrain, afin de mieux comprendre le devenir (formation/dégradation) de ces composés dans l’atmosphère. Ainsi, des particules naturelles, prélevées dans l’air ambiant, ont été exposées en réacteur à différents oxydants atmosphériques(O3, OH et NO2/O3). Les résultats montrent la dégradation effective des HAP et le benzo[a]pyrène, seul HAP réglementé aujourd’hui en Europe, apparait comme le composé le plus réactif. De plus, la formation significative de OHAP et NHAP a été mise en évidence, même si les quantités observées sont trop faibles pour boucler le bilan de masse, illustrant la formation de produits non détectés/détectables dans ce travail. La dégradation des HAP ayant été démontrée sur des particules naturelles, la question du lieu majoritaire de dégradation (atmosphère/support de prélèvement) a été étudiée au cours de différents échantillonnages atmosphériques, mettant en parallèle des préleveurs équipés ou non de pièges à ozone de type dénudeur. Ces études, bien que n’ayant pas permis de répondre définitivement à cette question, ont montré la formation de certains dérivés de HAP sur les supports d’échantillonnage. Suite à ces conclusions, des mesures ont été déployées sur le terrain, sur des sites de typologies différentes dans la région parisienne. Les concentrations en HAP, OHAP et NHAP mesurées se sont avérées 10 fois plus importantes sur un site trafic que sur un site périurbain. De plus, les différentes espèces mesurées sur chacun des sites ont montré que, contrairement aux HAP et OHAP, les NHAP majoritaires différaient selon la typologie du site. Ainsi, le site trafic a été identifié comme étant majoritairement influencé par des sources primaires, à l’opposé du site périurbain sur lequel les espèces secondaires étaient plus abondantes. Les études granulométriques ont montré que la distribution entaille des OHAP et NHAP particulaires était liée à leurs origines (primaire/secondaire). De plus, les OHAP et NHAP apparaissent associés à 85 % à la fraction la plus fine de l’aérosol (Dp < 2,5 µm), accentuant l’intérêt de leur étude d’un point de vue sanitaire. Enfin, la combinaison de l’étude de la distribution granulométrique de certains composés identifiés comme primaire ou secondaire, à celle des profils chimiques des NHAP ouOHAP, a permis de proposer des pistes quant à l’origine majoritaire de ces familles de composés dans l’air ambiant.
Polycyclic Aromatic Hydrocarbon (PAH) concentrations are regulated in ambient air because…
Advisors/Committee Members: Villenave, Eric (thesis director).
Subjects/Keywords: HAP; NHAP; OHAP; Particules; Air ambiant; Réactivité; Campagnes de terrain; Granulométrie; Analyse; PAH; NPAH; OPAH; Particles; Ambiant air; Reactivity; Field campaigns; Particle size distribution; Analysis
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ringuet, J. (2012). Dérivés oxygénés et nitrés des hydrocarbures aromatiques polycycliques (OHAP/NHAP) en phase particulaire : granulométrie et devenir dans l’atmosphère (formation/dégradation) : Multi-scale approach of the atmospheric new secondary particle formation. (Doctoral Dissertation). Université de Bordeaux I. Retrieved from http://www.theses.fr/2012BOR14504
Chicago Manual of Style (16th Edition):
Ringuet, Johany. “Dérivés oxygénés et nitrés des hydrocarbures aromatiques polycycliques (OHAP/NHAP) en phase particulaire : granulométrie et devenir dans l’atmosphère (formation/dégradation) : Multi-scale approach of the atmospheric new secondary particle formation.” 2012. Doctoral Dissertation, Université de Bordeaux I. Accessed March 02, 2021.
http://www.theses.fr/2012BOR14504.
MLA Handbook (7th Edition):
Ringuet, Johany. “Dérivés oxygénés et nitrés des hydrocarbures aromatiques polycycliques (OHAP/NHAP) en phase particulaire : granulométrie et devenir dans l’atmosphère (formation/dégradation) : Multi-scale approach of the atmospheric new secondary particle formation.” 2012. Web. 02 Mar 2021.
Vancouver:
Ringuet J. Dérivés oxygénés et nitrés des hydrocarbures aromatiques polycycliques (OHAP/NHAP) en phase particulaire : granulométrie et devenir dans l’atmosphère (formation/dégradation) : Multi-scale approach of the atmospheric new secondary particle formation. [Internet] [Doctoral dissertation]. Université de Bordeaux I; 2012. [cited 2021 Mar 02].
Available from: http://www.theses.fr/2012BOR14504.
Council of Science Editors:
Ringuet J. Dérivés oxygénés et nitrés des hydrocarbures aromatiques polycycliques (OHAP/NHAP) en phase particulaire : granulométrie et devenir dans l’atmosphère (formation/dégradation) : Multi-scale approach of the atmospheric new secondary particle formation. [Doctoral Dissertation]. Université de Bordeaux I; 2012. Available from: http://www.theses.fr/2012BOR14504
5.
Adeline, Karine.
Classification des matériaux urbains en présence de végétation éparse par télédétection hyperspectrale à haute résolution spatiale : Classification of urban materials in presence of sparse vegetation with hyperspectral remote sensing imagery at high spatial resolution.
Degree: Docteur es, Photonique et systèmes optoélectroniques, 2014, Toulouse, ISAE
URL: http://www.theses.fr/2014ESAE0056
► La disponibilité de nouveaux moyens d’acquisition en télédétection, satellitaire (PLEIADES, HYPXIM), aéroportée ou par drone (UAV) à très haute résolution spatiale ouvre la voie à…
(more)
▼ La disponibilité de nouveaux moyens d’acquisition en télédétection, satellitaire (PLEIADES, HYPXIM), aéroportée ou par drone (UAV) à très haute résolution spatiale ouvre la voie à leur utilisation pour l’étude de milieux complexes telles que les villes. En particulier, la connaissance de la ville pour l’étude des îlots de chaleur, la planification urbaine, l’estimation de la biodiversité de la végétation et son état de santé nécessite au préalable une étape de classification des matériaux qui repose sur l’utilisation de l’information spectrale accessible en télédétection hyperspectrale 0,4-2,5μm. Une des principales limitations des méthodes de classification réside dans le non traitement des zones à l’ombre. Des premiers travaux ont montré qu’il était possible d’exploiter l’information radiative dans les ombres des bâtiments. En revanche, les méthodes actuelles ne fonctionnent pas dans les ombres des arbres du fait de la porosité de leur couronne. L’objectif de cette thèse vise à caractériser les propriétés optiques de surface à l’ombre de la végétation arborée urbaine au moyen d’outils de transfert radiatif et de correction atmosphérique. L’originalité de ce travail est d’étudier la porosité d’un arbre via la grandeur de transmittance de la couronne. La problématique a donc été abordée en deux temps. Premièrement, la caractérisation de la transmittance d’un arbre isolé a été menée avec l’utilisation de l’outil DART à travers la mise en œuvre d’un plan d’expériences et d’études de sensibilité qui ont permis de la relier à des paramètres biophysiques et externes. Une campagne de mesures terrain a ensuite été réalisée afin d’évaluer son estimation à partir de différents niveaux de modélisation de l’arbre, dont un modèle réel acquis par mesures lidar terrestre. Deuxièmement, une nouvelle méthode de correction atmosphérique 3D adaptée à la végétation urbaine, ICARE-VEG, a été développée à partir des résultats précédents. Une campagne aéroportée et de mesures terrain UMBRA a été dédiée à sa validation. Ses performances comparées à d’autres outils existants ouvrent de larges perspectives pour l’interprétation globale d’une image par télédétection et pour souligner la complexité de modéliser des processus physiques naturels à une échelle spatiale très fine.
The new advances in remote sensing acquisitions at very high spatial resolution, either spaceborne (PLEIADES, HYPXIM), airborne or unmanned aerial vehicles borne, open the way for the study of complex environments such as urban areas. In particular, the better understanding of urban heat islands, urban planning, vegetation biodiversity, requires the knowledge of detailed material classification mapsbased on the use of spectral information brought by hyperspectral imagery 0.4-2.5μm. However, one of the main limitations of classification methods relies on the absence of shadow processing. Past studies have demonstrated that spectral information was possible to be extracted from shadows cast by buildings. But existing methods fail in shadows cast by trees because of…
Advisors/Committee Members: Briottet, Xavier (thesis director).
Subjects/Keywords: Télédétection hyperspectrale; Haute résolution spatiale; Ombres; Végétation urbaine; Porosité d’un arbre; Correction atmosphérique; Transfert radiatif; Modélisation; Campagnes aéroportée et de mesures terrain; Hyperspectral remote sensing; High spatial resolution; Shadows; Urban vegetation; Tree crown porosity; Atmospheric correction; Radiative transfer; Modeling; Airborne and field campaigns; 621
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Adeline, K. (2014). Classification des matériaux urbains en présence de végétation éparse par télédétection hyperspectrale à haute résolution spatiale : Classification of urban materials in presence of sparse vegetation with hyperspectral remote sensing imagery at high spatial resolution. (Doctoral Dissertation). Toulouse, ISAE. Retrieved from http://www.theses.fr/2014ESAE0056
Chicago Manual of Style (16th Edition):
Adeline, Karine. “Classification des matériaux urbains en présence de végétation éparse par télédétection hyperspectrale à haute résolution spatiale : Classification of urban materials in presence of sparse vegetation with hyperspectral remote sensing imagery at high spatial resolution.” 2014. Doctoral Dissertation, Toulouse, ISAE. Accessed March 02, 2021.
http://www.theses.fr/2014ESAE0056.
MLA Handbook (7th Edition):
Adeline, Karine. “Classification des matériaux urbains en présence de végétation éparse par télédétection hyperspectrale à haute résolution spatiale : Classification of urban materials in presence of sparse vegetation with hyperspectral remote sensing imagery at high spatial resolution.” 2014. Web. 02 Mar 2021.
Vancouver:
Adeline K. Classification des matériaux urbains en présence de végétation éparse par télédétection hyperspectrale à haute résolution spatiale : Classification of urban materials in presence of sparse vegetation with hyperspectral remote sensing imagery at high spatial resolution. [Internet] [Doctoral dissertation]. Toulouse, ISAE; 2014. [cited 2021 Mar 02].
Available from: http://www.theses.fr/2014ESAE0056.
Council of Science Editors:
Adeline K. Classification des matériaux urbains en présence de végétation éparse par télédétection hyperspectrale à haute résolution spatiale : Classification of urban materials in presence of sparse vegetation with hyperspectral remote sensing imagery at high spatial resolution. [Doctoral Dissertation]. Toulouse, ISAE; 2014. Available from: http://www.theses.fr/2014ESAE0056

ETH Zürich
6.
Böttcher, Lucas.
Epidemic processes.
Degree: 2018, ETH Zürich
URL: http://hdl.handle.net/20.500.11850/270037
► Various phenomena in our daily world exhibit similarities to epidemic spreading. Fashion or technical trends are referred to as viral when they reach a large…
(more)
▼ Various phenomena in our daily world exhibit similarities to epidemic spreading. Fashion or technical trends are referred to as viral when they reach a large part of a society. In general, trends, opinions, diseases and failure in social or technical networks are characterized by the fact that they spread from an ``infected'' source to a ``non-infected'' state. We use the term epidemic process to refer to the described variety of different spreading phenomena. In addition to infection processes, external influences such as media in the case opinion spreading among people also play a major role. In contrast to a simple contagion, where one source is sufficient to sustain spreading, there also exist complex contagion phenomena where multiple sources are required. Social opinion formation is often described by the latter process.
Until now, different spreading models have been developed and applied to account for different numbers of sources. We propose a general contagion model which accounts for both external influences and different numbers of ``infectious'' sources. We show that our contagion model exhibits a novel characteristic critical behavior which we describe using mathematical concepts that have their origin in catastrophe theory. Besides the stationary critical behavior, we also verify dynamical universal behavior by analyzing the corresponding correlation and response functions. The identification of universal critical behavior allows to demonstrate similarities between epidemic models that appear different at first sight. Based on those similarities, it is possible to classify spreading models. This way of classifying models is closely related to the study of phase transitions in statistical physics. Typically, one studies an order parameter (e.g. the number of infected) as a function of a control parameter (e.g. infection rate). In many situations, one finds a transition point or critical point of the control parameter at which the order parameter starts growing. At this point, there exists a characteristic behavior of the order parameter as a function of the control parameter. Considerations like these allow to apply methods from statistical physics which are important for describing phase transitions of percolation and magnetic systems.
We consider different applications after defining and classifying our general modeling framework. We use the gained insights from the analysis of our general contagion model to propose a model for political
campaigns. The suggested campaign model accounts for the complex interplay between activists, persuadables, political clout, budget and costs. Furthermore, we also study the opinion formation process in online petitions by applying different time series analysis methods. The last two examples have their origin in the
field of disease spreading. We describe a very effective method of targeted recovery of infected individuals, which makes it possible to drastically reduce the number of infected cases. This protocol is also applicable to other spreading processes.…
Advisors/Committee Members: Herrmann, Hans J., Helbing, Dirk.
Subjects/Keywords: Spreading; Bifurcations; Phase transitions and critical phenomena; Epidemic models; Opinion dynamics; Network theory; Mean-field theory; Universality; Ageing; Dynamical systems; Campaigns; Critical phenomena; Statistical physics; Simulation; Critical exponents; Cusp catastrophe; info:eu-repo/classification/ddc/510; info:eu-repo/classification/ddc/530; Mathematics; Physics
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Böttcher, L. (2018). Epidemic processes. (Doctoral Dissertation). ETH Zürich. Retrieved from http://hdl.handle.net/20.500.11850/270037
Chicago Manual of Style (16th Edition):
Böttcher, Lucas. “Epidemic processes.” 2018. Doctoral Dissertation, ETH Zürich. Accessed March 02, 2021.
http://hdl.handle.net/20.500.11850/270037.
MLA Handbook (7th Edition):
Böttcher, Lucas. “Epidemic processes.” 2018. Web. 02 Mar 2021.
Vancouver:
Böttcher L. Epidemic processes. [Internet] [Doctoral dissertation]. ETH Zürich; 2018. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/20.500.11850/270037.
Council of Science Editors:
Böttcher L. Epidemic processes. [Doctoral Dissertation]. ETH Zürich; 2018. Available from: http://hdl.handle.net/20.500.11850/270037

University of Maryland
7.
Joseph, Alicia T.
Modeling L-Band Microwave Emission From Soil-Vegetation System.
Degree: Geography, 2010, University of Maryland
URL: http://hdl.handle.net/1903/11442
► During a field campaign covering the 2002 corn growing season, a dual polarized tower mounted L-band (1.4 GHz) radiometer (LRAD) provided brightness temperature (T¬B) measurements…
(more)
▼ During a
field campaign covering the 2002 corn growing season, a dual polarized tower mounted L-band (1.4 GHz) radiometer (LRAD) provided brightness temperature (T¬B) measurements at preset intervals, incidence and azimuth angles. These radiometer measurements were supported by an extensive characterization of land surface variables including soil moisture, soil temperature, vegetation biomass, and surface roughness. During the period from May 22, 2002 to August 30, 2002 a range of vegetation water content (W) of 0.0 to 4.3 kg m-2, ten days of radiometer and ground measurements were available. Using this data set, the effects of corn vegetation on surface emissions are investigated by means of a semi-empirical radiative transfer model. Additionally, the impact of roughness on the surface emission is quantified using T¬B measurements over bare soil conditions. Subsequently, the estimated roughness parameters, ground measurements and horizontally (H)-polarized TB are employed to invert the H-polarized transmissivity (γh) for the monitored corn growing season.
Advisors/Committee Members: Kasischke, Eric (advisor).
Subjects/Keywords: Remote Sensing; Hydrologic Sciences; Environmental Engineering; Field Campaigns; L-band Radiometry; Passive Microwave; Remote Sensing; Soil Moisture
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Joseph, A. T. (2010). Modeling L-Band Microwave Emission From Soil-Vegetation System. (Thesis). University of Maryland. Retrieved from http://hdl.handle.net/1903/11442
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Joseph, Alicia T. “Modeling L-Band Microwave Emission From Soil-Vegetation System.” 2010. Thesis, University of Maryland. Accessed March 02, 2021.
http://hdl.handle.net/1903/11442.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Joseph, Alicia T. “Modeling L-Band Microwave Emission From Soil-Vegetation System.” 2010. Web. 02 Mar 2021.
Vancouver:
Joseph AT. Modeling L-Band Microwave Emission From Soil-Vegetation System. [Internet] [Thesis]. University of Maryland; 2010. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/1903/11442.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Joseph AT. Modeling L-Band Microwave Emission From Soil-Vegetation System. [Thesis]. University of Maryland; 2010. Available from: http://hdl.handle.net/1903/11442
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
8.
Jolleys, Matthew.
A global analysis of biomass burning organic
aerosol.
Degree: 2013, University of Manchester
URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:215748
► Organic aerosols represent one of the main sources of uncertainty affecting attempts to quantify anthropogenic climate change. The diverse physical and chemical properties of organic…
(more)
▼ Organic aerosols represent one of the main sources
of uncertainty affecting attempts to quantify anthropogenic climate
change. The diverse physical and chemical properties of organic
aerosols and the varied pathways involved in their formation and
aging form the basis of this uncertainty, preventing extensive and
accurate representation within regional and global scale models.
This inability to constrain the radiative forcings produced by
organic aerosols within the atmosphere consequently acts as a
limitation to the wider objective of providing reliable projections
of future climate. Biomass burning constitutes one of the main
anthropogenic contributions to the global atmospheric organic
aerosol (OA) burden, particularly in tropical regions where the
potential for perturbations to the climate system is also enhanced
due to higher average levels of solar irradiance. Emissions from
biomass burning have been the
subject of an intense research focus
in recent years, involving a combination of
field campaigns and
laboratory studies. These experiments have aimed to improve the
limited understanding of the processes involved in the evolution of
biomass burning organic aerosol (BBOA) and contribute towards the
development of more robust parameterisations for climate and
chemical transport models. The main objective of this thesis was to
use datasets acquired from several different global regions to
perform a broad analysis of the BBOA fraction, with the extensive
temporal and spatial scales provided by such measurements enabling
investigation of a number of key uncertainties, including regional
variability in emissions and the role of secondary organic aerosol
(SOA) formation in aging smoke plumes.Measurements of BBOA mass
concentration obtained using Aerodyne Research Inc. Aerosol Mass
Spectrometers (AMS) were used to calculate characteristic ΔOA/ΔCO
ratios for different environments, accounting for the effects of
dilution and contrasting fire sizes to give a proportional
representation of OA production. High levels of variability in
average ΔOA/ΔCO were observed both between and within different
regions. The scale of this variability consistently exceeded any
differences between plumes of different ages, while a widespread
absence of any sustained increase in ΔOA/ΔCO with aging indicates
that SOA formation does not provide a net increase in OA mass.
Despite this lack of OA enhancement, increasing proportions of
oxygenated OA components in aged plumes highlight the chemical
transformations occurring during the evolution of BBOA, and the
additional influence of OA loss through evaporation or
deposition.Potential drivers of variability in ΔOA/ΔCO at source,
such as changes in fuel types and combustion conditions, were
investigated for controlled fires carried out within a combustion
chamber. These laboratory experiments revealed a number of complex
relationships between BB emissions and source conditions. Although
ΔOA/ΔCO was shown to be influenced by both fuel properties and
transitions between flaming and smouldering…
Advisors/Committee Members: MCFIGGANS, GORDON GB, Coe, Hugh, Mcfiggans, Gordon.
Subjects/Keywords: biomass burning; organic aerosol; emission ratios; aerosol mass spectrometer; aircraft measurements; field campaigns; combustion chamber; aerosol aging
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Jolleys, M. (2013). A global analysis of biomass burning organic
aerosol. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:215748
Chicago Manual of Style (16th Edition):
Jolleys, Matthew. “A global analysis of biomass burning organic
aerosol.” 2013. Doctoral Dissertation, University of Manchester. Accessed March 02, 2021.
http://www.manchester.ac.uk/escholar/uk-ac-man-scw:215748.
MLA Handbook (7th Edition):
Jolleys, Matthew. “A global analysis of biomass burning organic
aerosol.” 2013. Web. 02 Mar 2021.
Vancouver:
Jolleys M. A global analysis of biomass burning organic
aerosol. [Internet] [Doctoral dissertation]. University of Manchester; 2013. [cited 2021 Mar 02].
Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:215748.
Council of Science Editors:
Jolleys M. A global analysis of biomass burning organic
aerosol. [Doctoral Dissertation]. University of Manchester; 2013. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:215748

University of Queensland
9.
Kloetzke, Thomas.
Simulation and analysis of surface wind fields during landfalling tropical cyclones.
Degree: School of Civil Engineering, 2019, University of Queensland
URL: http://espace.library.uq.edu.au/view/UQ:9
Subjects/Keywords: Wind; Tropical cyclones; Tropical cyclone boundary layer; Near-surface wind field; Turbulence; Surface roughness; Terrain changes; Field campaigns; WRF model; Idealised TC simulations; 0401 Atmospheric Sciences; 0915 Interdisciplinary Engineering
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kloetzke, T. (2019). Simulation and analysis of surface wind fields during landfalling tropical cyclones. (Thesis). University of Queensland. Retrieved from http://espace.library.uq.edu.au/view/UQ:9
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kloetzke, Thomas. “Simulation and analysis of surface wind fields during landfalling tropical cyclones.” 2019. Thesis, University of Queensland. Accessed March 02, 2021.
http://espace.library.uq.edu.au/view/UQ:9.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kloetzke, Thomas. “Simulation and analysis of surface wind fields during landfalling tropical cyclones.” 2019. Web. 02 Mar 2021.
Vancouver:
Kloetzke T. Simulation and analysis of surface wind fields during landfalling tropical cyclones. [Internet] [Thesis]. University of Queensland; 2019. [cited 2021 Mar 02].
Available from: http://espace.library.uq.edu.au/view/UQ:9.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kloetzke T. Simulation and analysis of surface wind fields during landfalling tropical cyclones. [Thesis]. University of Queensland; 2019. Available from: http://espace.library.uq.edu.au/view/UQ:9
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Vienna
10.
Weißmayer, Romana.
"Gesunde" Kommunikationskampagnen?.
Degree: 2009, University of Vienna
URL: http://othes.univie.ac.at/8030/
► Zahlreiche empirische Evaluationsstudien belegen, dass Kommunikationskampagnen im Gesundheitsbereich Erfolg haben, jedoch nur in geringem Ausmaß, bzw. in spezifischen Bereichen. 376 Dieser besagte Erfolg bzw. die…
(more)
▼ Zahlreiche empirische Evaluationsstudien belegen, dass Kommunikationskampagnen im Gesundheitsbereich Erfolg haben, jedoch nur in geringem Ausmaß, bzw. in spezifischen Bereichen. 376 Dieser besagte Erfolg bzw. die Effektivität diverser Gesundheitskampagnen
weist somit ein gewisses Verbesserungspotential auf, um den Grad der Effektivität und den Nutzen der Kampagne zu steigern. Diese Ergebnisse zeigen deutlich, dass mehr und vor allem lösungsorientierter auf die Rezipientin / den Rezipienten bzw. auf die jeweilige Zielgruppe diverser Präventionskampagnen und auf das dahinter stehende „Problem“ – sei es nun eine Krankheit, eine mögliche Fehlinformation oder ein dementsprechend negativ zu wertendes Verhalten - eingegangen werden muss. Das Erkenntnisinteresse gilt nun
vor allem jenen Möglichkeiten, wie Gesundheitskampagnen erfolgreicher, effizienter und effektiver gestaltet werden können. Hierzu möchte ich mich direkt an die gewählte
Zielgruppe der 20- bis 29-Jährigen Studentinnen und Studenten unserer Disziplin wenden.
376 (Vgl. Bonfadelli / Friemel 2006:75f)
Das Thema wird im theoretischen Teil zunächst anhand der Diskurstheorie nach Vilém Flusser, Jürgen Habermas und Michel Foucault kommunikationswissenschaftlich aufbereitet. Ebenso durch die Ansätze des Konstruktivismus, beispielsweise durch Ernst von Glasersfeld, und des Symbolischen Interaktionismus nach Herbert Blumer. Aber auch die Struktur der Lebenswelt von Alfred Schütz und Thomas Luckmann findet sowohl aus Sicht unserer Disziplin als auch aus soziologischer Sicht Anwendung.
Altbewehrte aber auch neuere Ansätze fließen in die theoretische Auseinandersetzung mit diesem so bedeutenden Bereich ein und finden nicht zuletzt auch mittels der Theorie der
kognitiven Dissonanz von Leon Festinger einen (sozial-) psychologischen Zugang.
Die Empirische Untersuchung im Bereich der gewählten Zielgruppe erstreckt sich über folgende Bereiche:
- Bedarfsanalyse an präventiven Maßnahmen im Bereich Gesundheit & Krankheit
- Erhebung der diesbezüglichen benutzerspezifischen Anforderungen und Bedürfnisse
- Umsetzungsmöglichkeiten und Erfolgsaussichten von Gesundheitskampagnen aus Sicht der gewählten Zielgruppe
- Analyse ihrer bisherigen Erfahrungswerte mit Kampagnen im Gesundheitsbereich
- Geschlechterspezifischer Vergleich
Diese quantitative empirische Studie wird mittels schriftlicher Befragung von 100 Studentinnen und Studenten der Publizistik- und Kommunikationswissenschaft (50 Frauen u. 50 Männer) durchgeführt und mit SPSS entsprechend ausgewertet.
Ziel ist es, die Anforderungen, Bedürfnisse bzw. den Bedarf aber auch die Erfahrungswerte junger Menschen hinsichtlich medialer Präventionsmaßnahmen durch Kommunikationskampagnen
im Gesundheitsbereich zu untersuchen und damit einen Beitrag zu einer bestmöglichen Grundlage optimaler Präventionsmaßnahmen in diesem Bereich zu leisten.
Numerous empirical evaluation studies have proved communication campaigns in the field of health to be successful, but only to some extend i.e. within specific…
Subjects/Keywords: 05.02 Kommunikationstheorie; 05.20 Kommunikation und Gesellschaft; Kommunikationskampagne / Gesundheitskommunikation / Gesundheit / Krankheit / Medien / Diskurstheorie / Konstruktivismus / Theorie der Lebenswelten / Theorie der Kognitiven Dissonanz / Symbolischer Interaktionismus; communications campaigns / communication in the field of health / health / disease / media / discourse theory / constructivism / theory of living worlds/ theory of the cognitive dissonance / symbolic interactionism
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Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Weißmayer, R. (2009). "Gesunde" Kommunikationskampagnen?. (Thesis). University of Vienna. Retrieved from http://othes.univie.ac.at/8030/
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Weißmayer, Romana. “"Gesunde" Kommunikationskampagnen?.” 2009. Thesis, University of Vienna. Accessed March 02, 2021.
http://othes.univie.ac.at/8030/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Weißmayer, Romana. “"Gesunde" Kommunikationskampagnen?.” 2009. Web. 02 Mar 2021.
Vancouver:
Weißmayer R. "Gesunde" Kommunikationskampagnen?. [Internet] [Thesis]. University of Vienna; 2009. [cited 2021 Mar 02].
Available from: http://othes.univie.ac.at/8030/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Weißmayer R. "Gesunde" Kommunikationskampagnen?. [Thesis]. University of Vienna; 2009. Available from: http://othes.univie.ac.at/8030/
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
.