Mathematics and Climate Rearch Network
Minnesota Node
University of Minnesota
School of Mathematics

NASA Earth

Spring 2019 Schedule

February 5, 2019

Filippov Systems and Multiflows, Cameron Thieme, School of Mathematics

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February 12, 2019

Modeling the mice microbiome using a generalized Lotka-Volterra equation, Somyi Baek, School of Mathematics

February 26, 2019

Habitat loss, extinction debt, and opportunities for restoration, Kate Meyer, School of Mathematics

March 5, 2019

Effects of Eccentricity on Climate and Habitability, I, Harini Chandramouli, School of Mathematics

March 12, 2019

Effects of Eccentricity on Climate and Habitability, II, Harini Chandramouli, School of Mathematics

April 30, 2019

Modeling the Mid Pleistocene Transition in a Budyko-Sellers Type Energy Balance Model using the LR04 Benthic Stack Somyi Baek, School of Mathematics

A conceptual model of the Plio-Pleistocene glacial cycles is developed based on the Budyko-Sellers type energy balance model. The model is shown to admit a phenomenon like the Mid-Pleistocene transition, capturing the essence of the albedo and the temperature precipitation feedbacks. In this talk, I will give a brief discussion of the model as well as how the LR04 benthic stack was utilized in the making of the model.

May 7, 2019

Effects of a Rogue Star on Earth's Climate Harini Chandramouli, School of Mathematics

Consider a star passing through our solar system "close enough" to disturb the orbital elements of Jupiter. We will look at how Jupiter's orbital elements change as time progresses from the past to the future. Changes in Jupiter's orbital elements could lead to potential changes in Earth's orbital elements and hence Earth's climate. We wish to study the effects of this passing star on Earth's climate and try to see if any past climate data matches with such an event happening.

May 14, 2019

Permafrost melt and its effects on planetary energy balance Kaitlin Hill, School of Mathematics

In the Northern hemisphere, permafrost sequesters large reservoirs of carbon. Upon melting, these carbon reserves may contribute strongly to increases in global mean temperature through the positive carbon feedback associated with permafrost melt, carbon release, and temperature increases. In this talk, we will analyze the effect of permafrost melt on global energy balance from a conceptual point of view. By considering changes in soil temperature as heat conduction, we may explicitly couple an expression for soil temperature at each latitude with Budyko's model for surface temperature. We will discuss possible motifs for analyzing the effect of permafrost on global energy balance and the insight each motif can provide into the dynamics of the system.

Last update: May 13, 2019
©2019 Richard McGehee