SEMINAR

Topic: Increase of Carbon cycle feedback with global warming.

Speaker: Bala Govindasamy, Lawrence Livermore National Laboratory

Date & Time: Monday, May 3, 2004, 1:00 PM

Place: Room 140 VMC (Chambers Hall)

ABSTRACT

 

Climate change due to anthropogenic emissions is becoming inevitable in the coming decades. Coupled ocean and atmosphere General Circulation Models (GCM) are generally used to project future warmings. These climate models are forced by future atmospheric CO2 concentrations projected by carbon cycle models. The carbon cycle models are, in turn, forced by projections of fossil fuel emissions based on various scenario of global economy. It is recognized that feedbacks between climate and carbon cycle can amplify climate change. In order to address and include these feedbacks, climate and carbon cycle models should be coupled. Recently, we have developed a comprehensive GCM-based coupled Climate and Carbon Cycle Model at LLNL. We have performed several experiments to study the feedback between climate and carbon cycle. In this talk, we will focus on the increase of the carbon cycle feedback factor with climate sensitivity.

BIOGRAPHICAL SKETCH

 

Dr. Bala Govindasamy obtained his Ph.D in 1994 from McGill University, Canada in Atmospheric and Oceanic Sciences. He specialized in numerical simulation of mid-latitude winter storms. He was a post-doc at Princeton University for 2 years. Then, he moved to Lawrence Livermore National Laboratory in 1996. Since then, he has studied global climate change using General Circulation Models. He is a key player in High-resolution climate modeling and the development of a coupled climate and carbon cycle model.

Refreshments will be served at 12:45 PM

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