This class describes the science of global warming and the forecast for humans’ impact on Earth’s climate. Intended for an audience without much scientific background but a healthy sense of curiosity, the class brings together insights and perspectives from physics, chemistry, biology, earth and atmospheric sciences, and even some economics—all based on a foundation of simple mathematics (algebra).
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Global Warming I: The Science and Modeling of Climate Change
Université de ChicagoÀ propos de ce cours
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Université de Chicago
One of the world's premier academic and research institutions, the University of Chicago has driven new ways of thinking since our 1890 founding. Today, UChicago is an intellectual destination that draws inspired scholars to our Hyde Park and international campuses, keeping UChicago at the nexus of ideas that challenge and change the world.
Programme de cours : ce que vous apprendrez dans ce cours
Overview
What you will find in this class.
Heat, Light, and Energy
A primer on how to use units to describe numbers when describing temperature, energy, and light. Even if you don't plan on doing calculations yourself, understanding how units work will help to follow the rest of the lectures in the class. If you are interested in practicing your analysis skills, using units to guide calculations, there are some exercises in the Part II of this class.
First Climate Model
The balance of energy flow, as incoming sunlight and outgoing infrared, allow us to create our first simple climate model, including a simple greenhouse effect. There are two extended exercises in Part II of this class, one an analytical (algebraic) model of the equilibrium temperature of a planet, the other a numerical model of how that temperature might evolve through time.
Greenhouse Gases and the Atmosphere
The Layer Model above assumes that the pane of glass representing the atmosphere absorbs all of the infrared radiation that hits it and that it radiates at all infrared wavelengths. In other words, the layer model atmosphere is an infrared blackbody, but transparent in the visible. In reality, greenhouse gases are not "black" at all; they are very choosy about which frequencies of light they absorb and emit. This selective absorption of infrared light by greenhouse gases leads to the band saturation effect, which makes rare, trace gases like methane disproportionally powerful relative to higher-concentration gases like COâ‚‚.
Avis
- 5 stars79,12Â %
- 4 stars12,62Â %
- 3 stars4,38Â %
- 2 stars1,28Â %
- 1 star2,57Â %
Meilleurs avis pour GLOBAL WARMING I: THE SCIENCE AND MODELING OF CLIMATE CHANGE
Overall great course. A couple of assignments were unclear as to what was required. Thankfully there is enough discourse in the forms with other students to help put you on the right track.
Excellent course. My understanding of the world and how we are affected by climate has grown tenfold if not more. I recommend this to anyone who has an interest in living on this planet.
Eye opening course, interesting content easily explained concepts and fantastic practice materials. Highly recommend this course to start creating conscience on issues affecting us all.
Thanks, Prof David Archer for teaching us. You may not know us but hope to see you face to face when I visit the US after the coronavirus pandemic.
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