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January 30, 2008 |
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The SIAM Minisymposium on Climate Change, Richard McGehee, School of Mathematics |
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At the annual joint meetings in San Diego, the Society of Industrial and Applied Mathematics (SIAM) held a symposium on Climate Change. This lecture will report on the presentations and discussions at that meeting. |
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Download slides (pdf). |
February 6, 2008 |
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Budyko's Ice Cover Model, Richard McGehee, School of Mathematics |
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A simple model of absorption and reflection yields multiple equilibrium states, including an ice-free Earth and an ice-covered Earth. |
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Download slides (pdf). |
February 13, 2008 |
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Stommel's Model of Thermohaline Convection, Esther Widiasih, School of Mathematics |
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A simple model of two reservoirs, with convection between them driven by differences in salinity and temperature, exhibits features analogous to the thermohaline convection currents in the ocean. |
February 20, 2008 |
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The Experiments by J. A. Whitehead with Thermohaline Convection, Jay Fillmore,
University of California at San Diego |
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Laboratory experiments using a large reservoir and small chamber, with flow determined by the difference in salinity and temperature, support the theory of H. Stommel on multiple states of thermohaline convection. |
February 27, 2008 |
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Carbon Sequestration in Peat Bogs, Clarence Lehman,
Department of Ecology, Evolution and Behavior |
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Peatlands store large amounts of carbon and form a pathway through which carbon can eventually escape the biosphere. A new calculation being developed showing the amount and rate of accumulation is discussed. |
March 5, 2008 |
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Energy Balance Climate Models, Esther Widiasih,
School of Mathematics |
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The paper A Simple Proof of the Slope Stability Theorem for Energy Balance Climate Models, by Samuel Shen and Gerald North is discussed. |
April 2, 2008 |
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An Introduction to Milankovitch Cycles, Richard McGehee, School of Mathematics |
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The elements of the Earth's orbit change over geologic time. The hypothesized effect on the climate is discussed. |
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Download slides (pdf). |
April 16, 2008 |
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"Target Atmospheric CO2:
Where Should Humanity Aim?"
by James Hansen, et al, Richard McGehee, School of Mathematics |
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In a recently released preprint, James Hansen, et al, present evidence that the current level of atmospheric CO2 is sufficient to create an ice-free Earth. |
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Download slides (pdf). |
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