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).
教學大綱 - 您將從這門課程中學到什麼
週
1完成時間為 1 小時
Overview
What you will find in this class.
1 個視頻 （總計 4 分鐘）, 4 個閱讀材料
1 個視頻
4 個閱讀材料
Resources10分鐘
Debriefing Quizzes10分鐘
Explainer Assignments10分鐘
A Supplemental Class to This One10分鐘
週
2完成時間為 3 小時
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.
6 個視頻 （總計 28 分鐘）, 3 個測驗
2 個練習
Optional Problems: How Much Coal to Run a Light Bulb4分鐘
Optional Problems: Comparing Energy Prices16分鐘
週
3完成時間為 1 小時
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.
2 個視頻 （總計 18 分鐘）, 4 個測驗
4 個練習
Optional Layer Model Problem: How Hot is the Moon?4分鐘
Optional Layer Model Problem 2: A Stronger Greenhouse Effect22分鐘
Optional Layer Model Problem 3: Nuclear Winter2分鐘
Quiz 122分鐘
週
4完成時間為 1 小時
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 CO₂.
2 個視頻 （總計 20 分鐘）, 1 個測驗
1 個練習
Model Greenhouse Gases in the Atmosphere12分鐘
4.6
73 個審閱14%
通過此課程獲得實實在在的工作福利
熱門審閱
A great introductory course into Global Warming as well as modelling which gives you a better insight into what is actually happening with our planet. Started another course and it all fits in.
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.
講師
David Archer
ProfessorGeophysical Sciences
關於 芝加哥大学
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.
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