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GG140: The Atmosphere, The Ocean, and Environmental Change

Lecture 30 - Climate Sensitivity and Human Population. Climate sensitivity is defined as either the temperature change resulting from a doubling of atmospheric carbon dioxide concentration or the temperature change resulting from a 1W/m2 increase in radiative forcing. There are several different climate sensitivities that take into account different feedbacks in the climate system. The simplest climate sensitivity is black body sensitivity, which does not account for any feedbacks but gives the temperature change resulting just from a change in radiative forcing. The calculated climate sensitivity based only on the Stefan-Boltzmann Law is lower than the climate sensitivity calculated using both temperature data over the last 100 years and ice age data over the last ~200,000 years, indicating that feedbacks have played a role in climate sensitivity. World population is also discussed, with population trends outlined for various countries as well as trends associated with developing areas versus developed areas. The issue of sustainable population is introduced. (from oyc.yale.edu)

Lecture 30 - Climate Sensitivity and Human Population

Time Lecture Chapters
[00:00:00] 1. Actions that May Reduce Global Warming
[00:02:03] 2. Future Climate Research
[00:07:13] 3. Climate Sensitivity
[00:22:31] 4. Population
[00:34:23] 5. Exponential Population
[00:39:41] 6. Population Density
[00:43:29] 7. Urbanization
[00:45:46] 8. Demographic Transition and the Population Pyramid

References
Lecture 30 - Climate Sensitivity and Human Population
Instructor: Professor Ronald B Smith. Resources: Credit List [PDF]. Transcript [html]. Audio [mp3]. Download Video [mov].

Go to the Course Home or watch other lectures:

Lecture 01 - Introduction to Atmospheres
Lecture 02 - Retaining an Atmosphere
Lecture 03 - The Perfect Gas Law
Lecture 04 - Vertical Structure of the Atmosphere; Residence Time
Lecture 05 - Earth Systems Analysis (Tank Experiment)
Lecture 06 - Greenhouse Effect, Habitability
Lecture 07 - Hydrostatic Balance
Lecture 08 - Horizontal Transport
Lecture 09 - Water in the Atmosphere I
Lecture 10 - Water in the Atmosphere II
Lecture 11 - Clouds and Precipitation (Cloud Chamber Experiment)
Lecture 12 - Circulation of the Atmosphere
Lecture 13 - Global Climate and the Coriolis Force
Lecture 14 - Coriolis Force and Storms
Lecture 15 - Convective storms
Lecture 16 - Frontal Cyclones
Lecture 17 - Seasons and Climate
Lecture 18 - Seasons and Climate Classification
Lecture 19 - Ocean Bathymetry and Water Properties
Lecture 20 - Ocean Water Density and Atmospheric Forcing
Lecture 21 - Ocean Currents
Lecture 22 - Ocean Currents and Productivity
Lecture 23 - El Nino
Lecture 24 - Ice in the Climate System
Lecture 25 - Ice and climate change
Lecture 26 - Isotope Evidence for Climate Change
Lecture 27 - Global Warming
Lecture 28 - Global Warming II
Lecture 29 - Global Warming III
Lecture 30 - Climate Sensitivity and Human Population
Lecture 31 - The Two Ozone Problems
Lecture 32 - The Ozone Layer
Lecture 33 - Energy Resources, Renewable Energy
Lecture 34 - Renewable Energy
Lecture 35 - Review and Overview