Evolution passée et future de la composition chimique stratosphérique et ses interactions avec le climat PDF Download

Author: Virginie Poulain
Publisher:
ISBN:
Category :
Languages : fr
Pages : 213

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Book Description
Ces dernières décennies, la stratosphère et sa composition chimique ont subi des changements importants qui commencent à influencer le climat. Ces changements, notamment l'amincissement de la couche d'ozone et l'augmentation de la vapeur d'eau, sont non seulement des thématiques importantes de recherche mais représentent également des inquiétudes sociétales. La stratosphère varie sur un large spectre d'échelles temporelles, allant de la journée à des décennies. La variabilité de la stratosphère peut être décomposée en deux termes : une variabilité dite interne générée au sein même du système atmosphérique et la variabilité dite forcée qui est plutôt créée par des forçages externes au système atmosphérique. Cette thèse aborde plusieurs aspects sur la modélisation chimie-climat à grande échelle. Nous commençons par évaluer la capacité des modèles à reproduire non seulement la variabilité inter-annuelle de l'ozone stratosphérique et d'autres espèces chimiques, vue de stations d'observation du NDACC (Network for Detection of Atmospheric Composition Change), mais aussi les contributions des forçages externes sur cette variabilité. Ensuite, nous portons notre attention sur la variabilité de la vapeur d'eau stratosphérique et, en particulier, sur les phénomènes de variations assez rapides (aussi appelées ruptures) de sa teneur qui peuvent générer un forçage radiatif très significatif. Enfin, nous étudions le forçage radiatif des variations d'ozone calculées par les CCM, en particulier l'évolution future attendue du forçage jusqu'à la fin du siècle.

Author: Collectif
Publisher: IRD Éditions
ISBN: 2709922207
Category : Nature
Languages : en
Pages : 736

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Book Description
This book has been published by Allenvi (French National Alliance for Environmental Research) to coincide with the 22nd Conference of Parties to the United Nations Framework Convention on Climate Change (COP22) in Marrakesh. It is the outcome of work by academic researchers on both sides of the Mediterranean and provides a remarkable scientific review of the mechanisms of climate change and its impacts on the environment, the economy, health and Mediterranean societies. It will also be valuable in developing responses that draw on “scientific evidence” to address the issues of adaptation, resource conservation, solutions and risk prevention. Reflecting the full complexity of the Mediterranean environment, the book is a major scientific contribution to the climate issue, where various scientific considerations converge to break down the boundaries between disciplines.

Author: Canada. Department of Fisheries and Oceans
Publisher: Peches Et Oceans Direction Generale Des Communications = Fisheries and Oceans Communications Dir
ISBN:
Category : Science
Languages : fr
Pages : 376

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Book Description
Proceedings of a workshop, the scientific reviews and the contributed papers presented at the symposium. The document presents a brief historical summary of marine research in the Gulf; reports the discussions, conclusions and recommendations of the different working groups on oceanography (physics, biology, chemistry and sedimentology) and on the fishery (fish and invertebrates); then presents the discussions of each multidisciplinary working group, centered around how the St. Lawrence system may be used as a natural laboratory which will contribute to the solution of major long-term problems of conservation of natural resources and of the quality of the environment.

Author: Bruno Voituriez
Publisher: UNESCO
ISBN:
Category : Science
Languages : en
Pages : 132

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Book Description
El Nino, caprice of the heavens, scapegoat for every calamity? The general public cannot really understand what is behind the El Nino phenomenon. The book offers a tour of the Earth's climate to understand one of its normal but extreme components.

Author: Adrian Atkinson
Publisher: Univerlagtuberlin
ISBN: 3798320853
Category :
Languages : en
Pages : 392

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Book Description

Author: Ira Helsloot
Publisher: Charles C Thomas Publisher
ISBN: 0398086834
Category : Business & Economics
Languages : en
Pages : 389

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Book Description
We live in turbulent times with continents and nations facing ever-heightening risks such as natural disasters, intense and protracted conflicts, terrorism, corporate crises, cyber threats to infrastructures and mega-events. We are witnessing the rise of mega-crises and a new class of adversity with many unknowns. The prospect of mega-crises presents professionals and students in the field of crisis management with four major tasks. First, they should engage in “deep thinking” about the causes of the increasing occurrence of mega-crises. Second, they should identify and work through the dominant trends which complicate contemporary crisis management. Third, they should upgrade institutional crisis management capacity. Fourth, they should improve societal resilience since no institutional complex can mitigate or manage these mega-crisis on its own. This book is divided into four primary parts, each of which looks at one facet of mega-crises. Part I focuses on the concept of a mega-crisis and mega-crisis management; Part II examines crisis management of mega-natural disasters; Part III evaluates crisis management of man-made mega-crises; and Part IV identifies mega-threats and vulnerabilities. Additional major topics include Hurricane Katrina; Hurricane Gustav; the London Bombings; the Mumbai Terrorist Attacks of July 7, 2005; corporate meltdowns; the subprime crisis; the Olympic Games; electricity grids; global climate change; the Dutch Delta; risks to food security; and mega-crises and the Internet. This comprehensive text will provide practitioners and academics with the results of an across-the-board research effort in the prospects, nature, characteristics, and the effects of mega-crises.

Author: Agnès Perrin
Publisher: Springer Science & Business Media
ISBN: 1402050909
Category : Nature
Languages : en
Pages : 347

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Book Description
This volume continues presentation of the proceedings of a NATO Advanced Research Workshop (ARW) held at Rabat, Morocco on the 17-19th of November 2005 entitled Remote Sensing of the Atmosphere for Environmental Security. Coverage includes a review of recent and upcoming experimental satellite measurements of the Earth’s atmosphere, characterisation of pollution in urban areas and the growing lack of water in many countries of the Mediterranean area, and more.

Author: International Energy Agency
Publisher: Organization for Economic Co-Operation & Development
ISBN:
Category : Business & Economics
Languages : en
Pages : 720

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Book Description
This 2010 edition of Energy Technology Perspectives examines the extent to which an energy technology revolution is taking place, the key technologies that are emerging, the costs and benefits of these technologies, and policies needed to foster their use. ETP 2010 presents updated scenarios from the present to 2050 that show which new technologies will be most important in key sectors and in different regions of the world. It highlights the importance of finance to achieve change, examines the implications of the scenarios for energy security and looks at how to accelerate the deployment of low-carbon technologies in major developing countries. It presents roadmaps and transition pathways for spurring deployment of the most important clean technologies and for overcoming existing barriers. With extensive data, projections and analysis, Energy Technology Perspectives 2010 provides decision makers with the detailed information and insights needed to accelerate the switch to a more secure, low-carbon energy future.

Author: Andrew Brooks
Publisher: Zed Books Ltd.
ISBN: 1783600691
Category : Business & Economics
Languages : en
Pages : 224

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Book Description
‘An interesting and important account.’ Daily Telegraph Have you ever stopped and wondered where your jeans came from? Who made them and where? Ever wondered where they end up after you donate them for recycling? Following a pair of jeans, Clothing Poverty takes the reader on a vivid around-the-world tour to reveal how clothes are manufactured and retailed, bringing to light how fast fashion and clothing recycling are interconnected. Andrew Brooks shows how recycled clothes are traded across continents, uncovers how retailers and international charities are embroiled in commodity chains which perpetuate poverty, and exposes the hidden trade networks which transect the globe. Stitching together rich narratives, from Mozambican markets, Nigerian smugglers and Chinese factories to London’s vintage clothing scene, TOMS shoes and Vivienne Westwood’s ethical fashion lines, Brooks uncovers the many hidden sides of fashion.

Author: Stephen J. Mackwell
Publisher: University of Arizona Press
ISBN: 0816530599
Category : Science
Languages : en
Pages : 709

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Book Description
"Through the contributions of more than sixty leading experts in the field, Comparative Climatology of Terrestrial Planets sets forth the foundations for this emerging new science and brings the reader to the forefront of our current understanding of atmospheric formation and climate evolution"--Provided by publisher.