"Lec 2 - Retaining an Atmosphere" The Atmosphere, the Ocean and Environmental Change (GG 140) There are other ways in which we can perceive the existence of the atmosphere, predominantly through our perceptions of pressure. Not all planets have atmospheres, and the existence of an atmosphere depends on the ability of gas molecules to remain trapped close to a planet by its gravitational force. The molecular velocity of each gas molecule depends upon its molecular weight, and must exceed the escape velocity of the planet to leave the atmosphere. 00:00 - Chapter 1. How Do We Sense Pressure? 02:42 - Chapter 2. Escape Velocity 08:31 - Chapter 3. Molecular Velocities 22:26 - Chapter 4. Which Planets have Atmospheres and Why? 29:30 - Chapter 5. Planetary characteristics in relation to their atmospheres 44:18 - Chapter 6. Vertical Profile of Temperature in the Atmosphere Complete course materials are available at the Open Yale Courses website: http://oyc.yale.edu This course was recorded in Fall 2011.
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Tags: Lec 2 - Retaining an Atmosphere
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Lec 1 - Introduction to Atmospheres
Lec 4 - Vertical Structure of the atmosphere; Residence Time
Lec 5 - Earth Systems Analysis (Tank Experiment)
Lec 6 - Greenhouse Effect, Habitability
Lec 9 - Water in the Atmosphere I
Lec 10 - Water in the Atmosphere II
Lec 11 - Clouds and Precipitation (cloud chamber experiment)
Lec 12 - Circulation of the Atmosphere (Exam I review)
Lec 13 - Global Climate and the Coriolis Force
Lec 14 - Coriolis Force and Storms
Lec 18 - Seasons and Climate Classification
Lec 19 - Ocean Bathymetry and Water Properties
Lec 20 - Ocean Water Density and Atmospheric Forcing
Lec 22 - Ocean Currents and Productivity
Lec 24 - Ice in the Climate System
Lec 25 - Ice and climate change
Lec 26 - Isotope Evidence for Climate Change
Lec 28 - Global Warming (continued)
Lec 29 - Global Warming (continued)
Lec 30 - Climate Sensitivity and Human Population
Lec 31 - The Two Ozone Problems
Lec 33 - Energy Resources, Renewable Energy