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Dissertations / Theses on the topic 'Global atmospheric changes'

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Published: 28 July 2024

Last updated: 31 July 2025

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1

Bayr, Tobias [Verfasser]. "Tropical atmospheric circulation changes under global warming / Tobias Bayr." Kiel : Universitätsbibliothek Kiel, 2013. http://d-nb.info/1045194751/34.

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2

Rosa, José Wilson Corrêa. "Global plate reconstructions, the area-age relationship, and global changes in sea level." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/60421.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1990.<br>Archives copy lacks leaf 247.<br>15 folded maps in pocket.<br>Includes bibliographical references (leaves 120-140).<br>by José Wilson Corrêa Rosa.<br>Ph.D.

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3

Avise, Jeremy Charles. "Global change and regional air quality impacts of climate, land-use, and emissions changes /." Online access for everyone, 2007. http://www.dissertations.wsu.edu/Dissertations/Fall2007/J_Avise_120907.pdf.

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4

Mooring, Todd A. "Changes in atmospheric eddy length with the seasonal cycle and global warming." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/65599.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics; and, (S.B.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 59-60).<br>A recent article by Kidston et al. [8] demonstrates that the length of atmospheric eddies increases in simulations of future global warming. This thesis expands on Kidston et al.'s work with additional studies of eddy length in the NCEP2 reanalysis (a model-data synthesis that reconstructs past atmospheric circulation) a

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5

Braganza, Karl 1971. "Climate change detection and attribution using simple global indices." Monash University, School of Mathematical Sciences, 2002. http://arrow.monash.edu.au/hdl/1959.1/7783.

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6

Otto, James. "A Search for Periodic and Quasi-Periodic Patterns in Select Proxy Data with a Goal to Understanding Temperature Variation." Thesis, University of North Texas, 2005. https://digital.library.unt.edu/ark:/67531/metadc849601/.

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In this work over 200 temperature proxy data sets have been analyzed to determine if periodic and or quasi-periodic patterns exist in the data sets. References to the journal articles where data are recorded are provided. Chapter 1 serves an introduction to the problem of temperature determination in providing information on how various proxy data sources are derived. Examples are given of the techniques followed in producing proxy data that predict temperature for each method used. In chapter 2 temperature proxy data spanning the last 4000 years, from 2,000 BCE to 2,000 CE, are analyzed to

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7

Otto, James (James Robert). "A Search for Periodic and Quasi-Periodic Patterns in Select Proxy Data with a Goal to Understanding Temperature Variation." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc849601/.

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In this work over 200 temperature proxy data sets have been analyzed to determine if periodic and or quasi-periodic patterns exist in the data sets. References to the journal articles where data are recorded are provided. Chapter 1 serves an introduction to the problem of temperature determination in providing information on how various proxy data sources are derived. Examples are given of the techniques followed in producing proxy data that predict temperature for each method used. In chapter 2 temperature proxy data spanning the last 4000 years, from 2,000 BCE to 2,000 CE, are analyzed to

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8

Leung, Wai-hung. "Global climate change : environmental implications for Hong Kong /." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B17457294.

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9

Nettleton, Stuart John. "Benchmarking climate change strategies under constrained resource usage /." Electronic version, 2009. http://utsescholarship.lib.uts.edu.au/iresearch/scholarly-works/handle/2100/1012.

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10

Benjamin, Jordan T. "Analyzing recent latitudinal and seasonal changes in simulated atmospheric temperatures from a global chemistry-climate model." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122235.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Physics, 2019<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 28-29).<br>Recent work by Santer et al. (2018) in Science examined the usefulness of the latitudinal structure and seasonal behavior of warming for fingerprinting anthropogenic climate change using satellite data and the CMIP5 multi-model ensemble over 1979-2016. They identify the first seasonal fingerprint in the northern hemisphere annual cycle and structure of warming, but do not specify what forcing agent (e.g. ozone, soot,

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11

Riihimaki, Laura 1979. "Evaluating long-term changes and their causes in surface solar irradiance in Oregon." Thesis, University of Oregon, 2008. http://hdl.handle.net/1794/8451.

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xv, 165 p. A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number.<br>The amount of solar radiation at the earth's surface is modulated by fluctuations in aerosol density and cloud optical depth--two uncertain factors in climate change studies. The University of Oregon Solar Radiation Monitoring Lab has collected five-minute resolution surface shortwave irradiance measurements at three sites in Oregon since 1980 or earlier. Direct normal surface solar irradiance has increased 4-5% per decade (8-11 W/m 2 per decade) at th

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12

Tousignant, Denise. "Selection response to global change of Brassica juncea (L.) czern." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=69693.

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The potential for an adaptive response to global climatic change was evaluated for an annual C$ sb3$ weed, Brassica juncea, by performing a selection on fecundity for eight generations. During the selection, atmospheric carbon dioxide and temperature were gradually increased from current levels (370 $ rm mu L cdot L sp{-1}$ CO$ sb2$, 20$ sp circ$C) to conditions predicted during the next century by climate models (650 $ rm mu L cdot L sp{-1}$ CO$ sb2$, 23.6$ sp circ$C) including heat stress events at 32$ sp circ$C/26$ sp circ$C day/night), At the end of the selection, a reciprocal transplant e

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13

Porter, William Christian. "Community Earth System Model: Implementation, Validation, and Applications." PDXScholar, 2012. https://pdxscholar.library.pdx.edu/open_access_etds/547.

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The Community Earth System Model (CESM) is a coupling of five different models which are combined to simulate the dynamic interactions between and within the Earth's atmosphere, ocean, land, land-ice, and sea-ice. In this work, the installation and testing of CESM on Portland State University's Cluster for Climate Change and Aerosol Research (CsAR) is described and documented, and two research applications of the model are performed. First, the improved treatment of cloud microphysics within recent versions of CESM's atmospheric module is applied to an examination of changes in shortwave cloud

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14

Tsuboda, Yukimasa. "Analysis of the effect of solar irradiance variability on global sea surface temperature and climate : an investigation using the NASA, Goddard Institute for Space Studies General Circulation Model /." Access Digital Full Text version, 1995. http://pocketknowledge.tc.columbia.edu/home.php/bybib/12250417.

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Thesis (Ed.D.)--Teachers College, Columbia University, 1995.<br>Typescript; issued also on microfilm. Sponsor: Warren E. Yasso. Dissertation Committee: O. Roger Anderson. Includes bibliographical references (leaves 95-109).

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15

Pepper, David A. "Investigation of the long term physiological response of Huon pine (Lagarostrobos franklinii) to changes in atmospheric CO2 and climate using stable isotopes." Phd thesis, School of Biological Sciences, 1999. http://hdl.handle.net/2123/4032.

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Thesis (Ph. D.)--University of Sydney, 2000.<br>Title from title screen (viewed February 12, 2009). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Biological Sciences, Faculty of Science. Degree awarded 2000; thesis submitted 1999. The 2 in the title is in subscript. Includes bibliographical references. Also available in print form.

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Pepper, David A. "Investigation of the long term physiological response of Huon pine (Lagarostrobos franklinii) to changes in atmospheric CO2 and climate using stable isotopes." Connect to full text, 1999. http://ses.library.usyd.edu.au/handle/2123/4032.

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Thesis (Ph. D.)--University of Sydney, 2000.<br>Title from title screen (viewed February 12, 2009). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Biological Sciences, Faculty of Science. Degree awarded 2000; thesis submitted 1999. The 2 in the title is in subscript. Includes bibliographical references. Also available in print form.

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17

Cunha, Kamyla Borges da. "Papel do Brasil, da Índia e da China Para a efetividade do regime climático pós-2012." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263831.

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Orientadores: Arnaldo Cesar Walter, Fernando Cardozo Fernandes Rei<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-08-16T08:10:47Z (GMT). No. of bitstreams: 1 Cunha_KamylaBorgesda_D.pdf: 6584850 bytes, checksum: f9cedaa0b7d809a1e7ca74de744ebb2c (MD5) Previous issue date: 2009<br>Resumo: A presente tese teve como objetivo principal analisar o papel de Brasil, Índia e China para a efetividade do regime climático pós-2012. Para tanto, foi preciso avaliar a efetividade do regime climático atual, perscrutar sobre os des

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18

Riofrio, Dillon Gabriela. "Évolution de l'acidité et de la disponiblité en azote des sols forestiers français au cours du 20ème siècle : une approche spatio-temporelle et multi-échelle basée sur le caractère bio-indicateur de la flore." Thesis, Paris, AgroParisTech, 2013. http://www.theses.fr/2013AGPT0042/document.

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Les activités humaines ont, depuis plus d'une centaine d'années, influencé de plus en plus fortement les cycles géochimiques contrôlant les niveaux d'acidité et de disponibilité en azote dans la nature. Les dépôts acides et azotés conduisent à une modification des conditions du milieu et notamment à des changements sensibles de la composition des communautés d'espèces végétales. L'objectif de cette thèse est de retracer l'évolution spatio-temporelle de l'acidité et de la disponibilité en azote des sols forestiers français au cours du 20ème siècle à partir du caractère bio-indicateur de la flor

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19

Watson, Julie. "How will elevated atmospheric COâ†2 affect species-rich grasslands?" Thesis, University of York, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387182.

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20

Lin, Yen-Heng. "Influence of Global Atmospheric Circulation Variations on Weather and Climate Extremes." DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/7238.

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Global warming and climate change deeply influence weather and climate extremes, causing substantial property damage and loss every year around the world. Given the importance of heating differences between low-latitude and Arctic regions, which produce heat sources and cold sources that each influence global circulations, we investigate three extreme weather events in different regions in order to better understand the possible connections between extreme events and global circulation changes. This study begins with climate variations in the low-latitude western North Pacific. In early summer

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21

Cantin, Danielle 1967. "Response of Pinus banksiana (Lamb.) families to a global change environment." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=68159.

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We examined how fast- and slow-growing families (based on height at 10 years) of Pinus banksiana Lamb. are affected by a climate altered by CO$ sb2$ during their first growing season. Our primary objective was to evaluate the possibility that genotypes performing best under present conditions may not necessarily do best under projected warmer climate. Seedlings were grown for six months in two climatic environments (350 $ mu$L/L CO$ sb2$ x present temperatures and 700 $ mu$L/L CO$ sb2$ x 4$ sp circ$C warmer temperatures) and with 100 ppm and 5 ppm nitrogen.<br>The CO$ sb2$T$ sp circ$ environme

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22

Meque, Arlindo Oliva. "Investigating the link between southern African droughts and global atmospheric teleconnections using regional climate models." Doctoral thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/16686.

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Includes bibliographical references<br>Drought is one of the natural hazards that threaten the economy of many nations, especially in Southern Africa, where many socio-economic activities depend on rain-fed agriculture. This study evaluates the capability of Regional Climate Models (RCMs) in simulating the Southern African droughts. It uses the Standardized Precipitation-Evapotranspiration Index (SPEI, computed using rainfall and temperature data) to identify 3-month droughts over Southern Africa, and compares the observed and simulated drought patterns. The observation data are from the Clima

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23

Trisos, Matthew Owen. "Global change drivers and their impact on herbaceous, ant, and grasshopper assemblages in an African semi-arid savanna." Doctoral thesis, University of Cape Town, 2020. http://hdl.handle.net/11427/32517.

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Assessments of the anthropogenic threats to savanna ecosystems are primarily focussed on land use change, bush encroachment, and biological invasions. There is, however, very little understanding as to the threats from atmospheric pollution. South Africa is the major emitter of CO2 on the African content while the Mpumalanga region bordering the Kruger National Park (KNP) is among the leading regions for nitrous oxide pollution in the world. It is not only increasing atmospheric pollution, but rainfall intensity is also predicted to increase for southern Africa. As savannas are nutrient limite

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24

Buzan, Jonathan R. "Quantifying Human Heat Stress in Working Environments, and Their Relationship to Atmospheric Dynamics, Due to Global Climate Change." Thesis, Purdue University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10809312.

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<p> Heat stress is a global issue that crosses socioeconomic status. Heat stress leads to reduced worker capacity on seasonal scales, and weekly to sub-daily timescales, incapacitation, morbidity, and mortality. This dissertation focuses on 2 distinct parts: quantification methods of heat stress, and heat stress applications.</p><p> <b>Quantification methods of heat stress:</b> Chapters 1–3 focus on historical analysis of heat stress. Chapter 1 is a detailed assessment of previous work in heat stress—methods, history, and future research out- look. Chapter 2 focuses on the implem

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25

Lauderdale, Jonathan Maitland. "On the role of the Southern Ocean in the global carbon cycle and atmospheric CO2 change." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/191935/.

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Uncertainty about the causes of glacial-interglacial CO2 variations demonstrates our incomplete grasp of fundamental processes that govern our climate and thus one of the foremost problems in palaeoceanography and Earth System Science regards the mechanism(s) responsible for natural changes in atmospheric CO2 concentration. It is becoming clear that the Southern Ocean overturning circulation plays an important role in the global carbon cycle because altered communication between the atmosphere and abyss in the Southern Ocean is relatively well documented and often implicated in explanations of

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26

Giorgi, Filippo. "Development of an atmospheric aerosol model for studies of global budgets and effects of airborne particulate material." Diss., Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/25868.

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27

Wang, Qiaoqiao. "Global budget of black carbon aerosol and implications for climate forcing." Thesis, Harvard University, 2013. http://dissertations.umi.com/gsas.harvard:11237.

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This thesis explores the factors controlling the distribution of black carbon (BC) in the atmosphere/troposphere and its implications for climate forcing. BC is of great climate interest because of its warming potential. Estimates of BC climate forcing have large uncertainty, in part due to poor knowledge of the distribution of BC in the atmosphere. This dissertation first examines the factors controlling the sources of BC in the Arctic in winter and spring using a global chemical transport model (GEOS-Chem). Emission inventories of BC and wet scavenging of aerosols in the model are updated to

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Ellis, Alexander 1972. "Global change and tropical forests : functional groups and responses of tropical trees to elevated CO." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27312.

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The paradox of tropical forests is that they are simultaneously the most diverse, the least understood, and the most imperiled terrestrial ecosystem in the world. Dramatic increases in the atmospheric carbon dioxide (CO$ sb2$) concentration threaten to adversely affect fundamental climatic and ecosystem processes, gradually changing many things which we do not yet understand. Although the impacts of this rise have been studied in temperate areas, little research has investigated tree responses in the tropics, especially under natural frost conditions. This thesis examines three central issues

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Cherian, Ribu, Chandrasekhar Venkataraman, Johannes Quaas, and Srinivasan Ramachandran. "GCM simulations of anthropogenic aerosol-induced changes in aerosol extinction, atmospheric heating and precipitation over India." Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-176395.

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The influence of anthropogenic emissions on aerosol distributions and the hydrological cycle are examined with a focus on monsoon precipitation over the Indian subcontinent, during January 2001 to December 2005, using the European Centre for Medium-Range Weather Forecasts-Hamburg (ECHAM5.5) general circulation model extended by the Hamburg Aerosol Module (HAM). The seasonal variability of aerosol optical depth (AOD) retrieved from the MODerate Resolution Imaging Spectroradiometer (MODIS) on board the Terra and Aqua satellite is broadly well simulated (R 0.6–0.85) by the model. The spatial dist

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Cherian, Ribu, Chandrasekhar Venkataraman, Johannes Quaas, and Srinivasan Ramachandran. "GCM simulations of anthropogenic aerosol-induced changes in aerosol extinction, atmospheric heating and precipitation over India." Wiley, 2013. https://ul.qucosa.de/id/qucosa%3A13437.

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The influence of anthropogenic emissions on aerosol distributions and the hydrological cycle are examined with a focus on monsoon precipitation over the Indian subcontinent, during January 2001 to December 2005, using the European Centre for Medium-Range Weather Forecasts-Hamburg (ECHAM5.5) general circulation model extended by the Hamburg Aerosol Module (HAM). The seasonal variability of aerosol optical depth (AOD) retrieved from the MODerate Resolution Imaging Spectroradiometer (MODIS) on board the Terra and Aqua satellite is broadly well simulated (R 0.6–0.85) by the model. The spatial dist

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31

Wilson, Craig Michael. "Barriers and drivers to the implementation of the "clean development mechanism" within the Nelson Mandela Bay Municipality: a case study." Thesis, Rhodes University, 2008. http://hdl.handle.net/10962/d1003851.

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The global threat of climate change is one of the most crucial environmental issues facing the world in modern times. In response to this threat, international governments have drafted the Kyoto Protocol which included the Clean Development Mechanism (CDM). The CDM is a scheme which invited developing countries, like South Africa, to become involved in climate change mitigation projects. While South Africa has been identified as an attractive host country for CDM projects, research has revealed that it lags behind other developing countries in this regard. This study provides a theoretical bac

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32

Madeleine, Jean-Baptiste. "Nuages et poussières de l'atmosphère martienne : télédétection, modélisation des rétroactions climatiques et application aux paléoclimats." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2011. http://tel.archives-ouvertes.fr/tel-00691313.

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Par leur effet radiatif, les poussières atmosphériques et les nuages de glace d'eau jouent un rôle essentiel dans le climat de la planète Mars. Un module améliorant le calcul de l'extinction par les aérosols est implémenté dans le Modèle de Climat Global (GCM) martien du LMD, et permet de prendre en compte au cours de la simulation les variations 3D des propriétés radiatives des particules en fonction de leur évolution en taille. Le modèle est d'abord utilisé pour revisiter l'impact radiatif de la poussière atmosphérique. De nouvelles propriétés des poussières sont utilisées et couplées à un s

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33

Neto, Newton de Magalhães. "Análise das mudanças na extensão do gelo marinho antártico e ártico entre 1979 e 2007 e sua relação com a variabilidade climática global." Universidade do Estado do Rio de Janeiro, 2011. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=2899.

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Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro<br>Recentes observações satelitais têm demonstrado um aumento na extensão total do gelo marinho Antártico e redução do gelo marinho no Ártico. Apesar destas constatações, no Oceano Sul análises regionais apontam tendências negativas nos mares de Bellingshausen-Amundsen e positivas no mar de Ross, enquanto que para o Ártico ocorrer uma redução uniforme do gelo marinho. Neste estudo, foi realizada uma análise multivariada para identificar as mudanças na extensão do gelo marinho Antártico e Ártico em resposta à variabilidade de um conjunto

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34

Blanchard, Yann. "Analyse du potentiel de la radiométrie infrarouge thermique pour la caractérisation des nuages de glace en Arctique." Phd thesis, Université de Sherbrooke, 2011. http://tel.archives-ouvertes.fr/tel-00753586.

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Dans le contexte actuel de changements climatiques, il est crucial d'approfondir nos connaissances des nuages de glace fins (TIC) et de leurs paramètres intensifs et extensifs. Les TICs peuvent avoir pour effet de refroidir ou de réchauffer le climat, en fonction de leurs paramètres météorologiques et microphysiques. Ainsi, l'épaisseur optique (COD) et la taille des particules sont essentiels pour pouvoir simuler les nuages de glace dans les modèles climatiques. L'objectif de notre recherche est d'évaluer le potentiel des mesures radiométriques infrarouge thermique (IRT) afin d'inverser le COD

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Helmle, Kevin P. "Coral Schlerochronology and the Relationship Between Coral Growth Records and Climate Change." NSUWorks, 2009. http://nsuworks.nova.edu/occ_stuetd/60.

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The presence of annual density banding in certain long-lived reef-building corals provides a record of the coral’s growth rate over time in response to changing environmental conditions. Coral growth is best described by three parameters: linear extension, bulk density, and calcification. Coral growth is generally controlled by the combined influences of light, temperature, and water quality; however, corals are highly responsive to their surrounding conditions and thus record environmental variations through their rates and patterns of skeletal accretion. Because coral growth rates reflect en

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Barkley, Hannah Catherine. "A scientific framework for evaluating coral reef resilience to climate change." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/107209.

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Thesis: Ph. D., Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>The 21st century warming and acidification of tropical oceans will impact the structure and function of coral reef ecosystems. Consequently, conservation efforts are increasingly focused on identifying and protecting reef communities that demonstrate resilience to these changes. I

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Taschetto, Andréa Sardinha. ""O impacto dos gases estufa nas variáveis de superfície ar-mar através de um modelo acoplado de circulação geral"." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/21/21132/tde-10102003-184227/.

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Há evidências de que o clima vem sendo alterado pela ação humana desde a época da Revolução Industrial devido à crescente emissão de gases estufa na atmosfera. Inúmeras curvas da variação da temperatura média anual têm sido publicadas com uma característica comum: o crescimento da temperatura durante o último século, totalizando aproximadamente 0,5ºC. Acredita-se que o aumento na concentração atmosférica dos gases responsáveis pelo efeito estufa tenha influência direta na tendência da temperatura dos últimos 100 anos. Este trabalho foi realizado com o intuito de estudar as mudanças no comport

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38

Chabrillat, Simon H. "Modélisation du changement global dans l'atmosphère moyenne." Doctoral thesis, Universite Libre de Bruxelles, 2001. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/211595.

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Les abondances atmosphériques du dioxyde de carbone et du méthane augmentent progressivement, modifiant probablement le climat global de l'atmosphère. Bien que ces effets soient très étudiés dans la troposphère, ils le sont peu dans l'atmosphère moyenne (20 - 120 km) où ils pourraient avoir un impact plus facilement détectable. Nous nous intéressons en particulier à la mésosphère/basse thermosphère (MLT), où apparaissent de plus en plus souvent des nuages mésosphériques polaires (PMC). La MLT est sensible au niveau d'activité solaire, qui varie selon un cycle de onze ans.<p>Nous évaluons les i

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39

Sena, Elisa Thomé. "Variabilidade espacial e temporal da forçante radiativa direta de aerossóis de queimadas e os efeitos da mudança de uso do solo na Amazônia." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-07102014-154346/.

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Medidas simultâneas dos sensores CERES (Clouds and the Earths radiant Energy System) e MODIS (Moderate Resolution Imaging Spectrometer), a bordo do satélite Terra, da NASA foram utilizadas para avaliar o impacto do desflorestamento no balanço radiativo em larga escala na Amazônia durante as estações secas de 2000 a 2009. Este impacto é decorrente da emissão de partículas de queimadas, mudanças nas características de superfície e na quantidade de vapor dágua na coluna atmosférica. A forçante radiativa direta de aerossóis de queimadas e a forçante radiativa de mudança de albedo de superfície, de

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Sakian, Nicholas A. "Seasonal Trends and Variability of Temperature, Precipitation, and Diurnal Temperature Range in U.S. Climate Divisions." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1440428134.

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Van, Delden Lona Petra Rike. "Implications of urbanization related land use change on the Carbon and Nitrogen cycle from subtropical soils." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/109076/1/Lona_Van%20Delden_Thesis.pdf.

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This research established the first non-CO2 Global Warming Potential for subtropical peri-urban environments from the N2O and CH4 soil-atmosphere gas exchange dynamics after land use change due to urbanization. Two years of high temporal gas flux measurements identified immediate, seasonal and inter-annual C and N flux changes after turf grass establishment compared to forest and pasture land use to highlight the impact of our growing cities on the environment. Despite turf grass establishment increases soil greenhouse gas emissions, which increases the Global Warming Potential, the subtropica

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Wang, Mengqiu. "Spatial and Temporal Distributions of Pelagic Sargassum in the Intra-Americas Sea and Atlantic Ocean." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7716.

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Pelagic Sargassum is one type of marine macroalgae that is known to be abundant in the Gulf of Mexico and Sargasso Sea. It is also known to serve as a critical habitat for many marine animals. In the past few years, large amounts of Sargassum have been reported in the Tropical Atlantic and Caribbean Sea (CS), causing significant environmental and economic problems. The goal of this study is to improve the understanding of Sargassum distributions, quantity, transport pathways, and bloom mechanisms in the CS and Tropic Atlantic through combining a variety of techniques including satellite remote

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Ventura, Robert E. "Wetlands and Greenhouse Gas Fluxes: Causes and Effects of Climate Change – A Meta-Analysis." Scholarship @ Claremont, 2014. http://scholarship.claremont.edu/pomona_theses/107.

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Climate change is one of the largest problems facing this generation. Anthropogenically caused increases of greenhouse gas emissions is a significant culprit to this problem. Although the obvious problems such as cars, industry, and urbanism garnish a significant amount of the criticism, natural sources such as wetlands are also beginning to contribute to this issue. This is becoming increasingly significant as wetlands shift from being sinks of greenhouse gases to becoming sources as various anthropogenic impacts, including global warming itself, begin to affect the health of the wetlands. Th

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Rizzetto, Simon. "Prédiction de la sensibilité biogéochimique et écologique des écosystèmes forestiers français aux dépôts atmosphériques azotés dans un contexte de changement global." Phd thesis, Toulouse, INPT, 2017. http://oatao.univ-toulouse.fr/19558/1/Rizzetto.pdf.

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Depuis des décennies, les dépôts atmosphériques azotés sont connus pour agir de manière sévère sur le fonctionnement des écosystèmes forestiers. Ils influent en effet la biogéochimie du sol, l’équilibre des éléments nutritifs et, en conséquence, la croissance des espèces végétales, la biodiversité végétale de sous-étage et plus globalement la santé des forêts. Dans le cadre de la convention internationale de Genève visant à limiter la pollution atmosphérique transfrontalière à longue distance, le concept de « Charges Critiques », défini à la fin des années 1980, a été retenu comme outil permet

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Pfeiffer, Alexander Jan Lukas. "The decarbonization identity and pathways to net-zero." Thesis, University of Oxford, 2018. https://ora.ox.ac.uk/objects/uuid:87945b50-1fef-4da1-9000-907237dcfd28.

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Success or failure of climate policies in limiting warming to beneath particular thresholds depends on several physical, economic and social uncertainties. Whilst scenario analysis can be informative as to the types of policies that are required to achieve these goals, the complexity of scenario analysis often masks the underlying fundamental choices. This dissertation introduces the concept of the âdecarbonization identity' to simply and systematically describe the mutually exclusive and collectively exhaustive range of choices available in future climate policy decisions. The simple ident

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De, Boyer Montégut Clément. "Couche melangee oceanique et bilan thermohalin de surface dans l'Ocean Indien Nord." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2005. http://tel.archives-ouvertes.fr/tel-00011449.

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L'objectif de cette these est de determiner quels sont les processus oceaniques et atmospheriques qui controlent la variabilite saisonniere et interannuelle de la Temperature de Surface Oceanique (TSO) dans l'Ocean Indien Nord. Notre approche consiste a utiliser un modele de circulation generale oceanique force et a analyser les termes oceaniques et atmospheriques qui influencent la TSO, representee par la temperature de la couche melangee. Cette couche de surface est donc primordiale dans cette etude. S'assurer qu'elle est bien representee par le modele oceanique nous permet d'obtenir des res

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Bador, Margot. "Les changements d'extrêmes de température en Europe : records, canicules intenses et influence anthropique." Thesis, Toulouse 3, 2016. http://www.theses.fr/2016TOU30024/document.

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En Europe, l'augmentation des températures moyennes de surface de l'air projetée au cours du 21ème siècle s'accompagne d'une augmentation des extrêmes chauds et d'une diminution des extrêmes froids. Dans les dernières décennies, des indices témoignent déjà de ces changements, comme l'établissement récurrent de nouveaux records de chaleur ou l'augmentation des canicules. Nous étudions l'évolution des extrêmes journaliers de température au cours du 20ème et du 21ème siècle en France et en Europe, et ce en termes d'occurrence et d'intensité. Un intérêt particulier est aussi porté aux mécanismes r

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Jourdain, Bruno. "Etude du maillon atmosphérique du cycle biogéochimique du soufre aux hautes latitudes sud (station Dumont d'Urville)." Phd thesis, Université Joseph Fourier (Grenoble), 2001. http://tel.archives-ouvertes.fr/tel-00693953.

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L'atmosphère des hautes latitudes sud demeure très peu documentée à l'heure actuelle. Or, la compréhension des systèmes biogéochimiques à ces latitudes est nécessaire tant pour l'interprétation des archives glaciaires que pour évaluer l'importance de ces régions dans le climat actuel et futur, en liaison notamment avec les émissions océaniques de diméthylsulfure (DMS). Des études de distributions en taille de l'aérosol sur la base côtière antarctique de Dumont d'Urville ont permis de mieux cerner les problèmes de fractionnement de l'aérosol marin par rapport à la composition de l'eau de mer. E

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Machu, Yann. "Origine des sources et bilans des transferts de Cu au Golfe du Lion." Electronic Thesis or Diss., Perpignan, 2024. http://www.theses.fr/2024PERP0037.

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La Méditerranée Nord-Occidentale, en particulier le Golfe du Lion (GdL), est l’une des régions les plus productives de la Méditerranée également considérée comme un « hot spot » du réchauffement climatique. Cette zone extrêmement réactive est idéale pour observer l’impact des activités anthropiques sur les écosystèmes côtiers dans un contexte de changements globaux. Le GdL est caractérisé par l’occurrence d’évènements extrêmes (épisodes de pluies intenses et d’apports éoliens sahariens), typique du climat méditerranéen, dont les conséquences environnementales peuvent être exacerbées par la for

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Shajari, Sadegh. "Hydrologie et aménagement : aménagement trans-bassin en Iran ; optimisation de la gestion des ressources en eau." Phd thesis, Université Joseph Fourier (Grenoble), 1988. http://tel.archives-ouvertes.fr/tel-00743948.

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L'analyse des donnees climatiques montre qu'en Iran pays semi aride, des constrastes importants existent entre régions abondament arrosées et régions désertiques. La répartition temporelle des précipitations est très irreguliére. Compte tenu des conditions géologiques et hydrogéologiques observées sur les deux versants de la chaine du Zagros, les bilans des ressources en eau superficielles et souterraines amènent a définir les ouvrages nécessaires à leur régularisation et à préconiser des aménagements de transfert des eaux. Une critique de l'un des aménagements deja réalisès fait apparaitre le

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