Talk by John Chiang, Ass. Professor, University of California, Berkeley – Niels Bohr Institute - University of Copenhagen

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Niels Bohr Institute > Calendar > 2010 > Talk by John Chiang, A...

Talk by John Chiang, Ass. Professor, University of California, Berkeley

Atmospheric teleconnections of North Atlantic cooling to the Tropics and Southern Hemisphere

Abstract

The realization from paleoclimate studies that North Atlantic cooling can significantly alter the global climate has motivated a number of modeling and theoretical studies over the last few years to understand how and why these teleconnections come about.  In this talk, I'll cover some of these developments, specifically focusing on how the tropical climate is impacted.  I'll also introduce some recent results that suggest an atmospheric teleconnection from North Atlantic cooling to the southern hemisphere midlatitude westerlies, via changes to the tropical Hadley circulation.  There are implications of these teleconnections for interpreting past and present climate change scenarios, and I'll touch on some of them in conclusion.