Joint Seminar: Precession and Monsoons: The role of Energy versus Stability

Abstract: The changes in Earth's precession have an impact on tropical precipitation. Speleothem records show that, the intensity of monsoon is directly proportional to insolation on orbtial timescales. However, model based studies suggest that, while this is true over land, precipitation over tropical oceans are in general, inversely related to insolation. We have used energy and moisture budget equations to show that changes in fluxes at the top and bottom of the atmosphere as well as stability have an impact on the changes in precipitation in all regions of the tropics. Hence the changes in tropical precipitation in the past cannot be attributed solely to the changes in incoming solar radiation.




13:30 Uhr


Bundesstr. 53, room 022/023
Seminar Room 022/023, Ground Floor, Bundesstrasse 53, 20146 Hamburg, Hamburg


Chetankumar Jalihal, Max-Planck-Institute für Meteorology


Roberta D'Agostino

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