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Modèles de climat : bâtir la météorologie du futur // Climate Models: Building Future Weather| old_uid | 10205 |
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| title | Modèles de climat : bâtir la météorologie du futur // Climate Models: Building Future Weather |
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| start_date | 2011/09/27 |
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| schedule | 18h |
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| online | no |
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| location_info | salle Dussane |
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| details | Cette conférence inaugure un cycle de grandes conférences destinées au grand public et proposées par le département de Géosciences. |
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| summary | This presentation will describe how climate models work and what they predict. A basic definition of climate is presented to define the problem, and the basic problem of changing climates (natural and human caused) will be discussed. The scientific principles of climate models come from basic physical laws, discovered by people like Newton, Carnot and Maxwell from the 17th-19th century. The basic ideas for representing these laws in a computer involve representing these physical laws and constraints. Difficulties arise from small scale processes that cannot be fully described. Climate models are very similar to weather forecast models, but are applied differently. Climate models are validated and checked in the same way that weather forecast models are, and why and where we should and should not trust climate models will be discussed. Finally, some of the predictions of current climate models for the future will be presented, with some of the key potential impacts discussed. Climate change is a fundamental challenge not just to physical science, but to how our political and economic systems are designed, and this is what makes policy action difficult The talk will summarize with a hopeful message that while there is a chance that catastrophic climate change may occur, it can likely be avoided with technology that exists today. |
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| responsibles | <not specified> |
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