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On mesure depuis peu le rôle essentiel joué par l'océan dans les mécanismes complexes qui régissent le climat. En stockant la chaleur reçue du Soleil pour la transporter des tropiques vers les régions tempérées, l'océan interagit avec l’atmosphère, contribuant à rendre notre planète habitable. Dans le contexte du réchauffement climatique global, l'étude tes relations entre l’océan et le climat est devenue un enjeu scientifique majeur. En quelques décennies, l'océanographie physique est passée d'une approche descriptive et géographique à une approche géophysique. Cette mutation spectaculaire a été rendue possible grâce au développement de programmes internationaux sans précédent, auxquels se sont ajoutés les apports déterminants de' l’observation spatiale et de la modélisation numérique. Ce vaste déploiement de moyens techniques, scientifiques et humains est à l’origine de la découverte des mécanismes fondamentaux de la dynamique des océans, et du rôle particulier des océans tropicaux dans la variabilité climatique. Accessible à un large public, cet ouvrage retrace dans sa dimension scientifique et humaine les conquêtes d'une discipline en plein essor, à présent au cœur des questionnements sur le climat futur.
Environmental Studies --- climatologie --- interaction océan atmosphère --- couplage océan atmosphère --- océanographie physique --- circulation océanique --- circulation atmosphérique --- upwelling --- El Niño --- La Niña
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Wally Broecker is one of the world's leading authorities on abrupt global climate change. More than two decades ago, he discovered the link between ocean circulation and climate change, in particular how shutdowns of the Great Ocean Conveyor--the vast network of currents that circulate water, heat, and nutrients around the globe--triggered past ice ages. Today, he is among the researchers exploring how our planet's climate system can abruptly "flip-flop" from one state to another, and who are weighing the implications for the future. In The Great Ocean Conveyor, Broecker introduces readers to the science of abrupt climate change while providing a vivid, firsthand account of the field's history and development. Could global warming cause the conveyor to shut down again, prompting another flip-flop in climate? What were the repercussions of past climate shifts? How do we know such shifts occurred? Broecker shows how Earth scientists study ancient ice cores and marine sediments to probe Earth's distant past, and how they blend scientific detective work with the latest technological advances to try to predict the future. He traces how the science has evolved over the years, from the blind alleys and wrong turns to the controversies and breathtaking discoveries. Broecker describes the men and women behind the science, and reveals how his own thinking about abrupt climate change has itself flip-flopped as new evidence has emerged. Rich with personal stories and insights, The Great Ocean Conveyor opens a tantalizing window onto how Earth science is practiced.
Ocean-atmosphere interaction --- Atmospheric circulation --- Ocean circulation --- Climatic changes --- Boundary layer (Meteorology) --- Interaction mer-atmosphère --- Circulation atmosphérique --- Climat --- Couche limite (Météorologie) --- Changements --- Atmospheric circulation. --- Climatic changes. --- Ocean circulation. --- Ocean-atmosphere interaction. --- Boundary layer (Meteorology). --- Interaction mer-atmosphère --- Circulation atmosphérique --- Couche limite (Météorologie) --- Air-sea interaction --- Air-sea interactions --- Atmosphere-ocean interaction --- Atmosphere-ocean interactions --- Atmospheric-oceanic interactions --- Interaction of atmosphere and ocean --- Interactions of atmosphere and ocean --- Ocean-meteorological relations --- Oceanic-atmospheric interactions --- Sea-air interaction --- Sea-air interactions --- Marine meteorology --- Oceanography --- Teleconnections (Climatology) --- Atmospheric motion --- Wind circulation --- Climatology --- Meteorology --- Grosswetterlagen --- Stratospheric circulation --- Winds --- Circulation, Ocean --- Changes, Climatic --- Changes in climate --- Climate change --- Climate change science --- Climate changes --- Climate variations --- Climatic change --- Climatic fluctuations --- Climatic variations --- Global climate changes --- Global climatic changes --- Climate change mitigation --- Atmosphere, Lower --- Atmospheric boundary layer --- Friction layer (Meteorology) --- Ground layer (Meteorology) --- Lower atmosphere --- Planetary boundary layer --- Surface boundary layer --- Surface layer (Meteorology) --- Atmosphere --- Environmental aspects --- Physical oceanography --- Global environmental change
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