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Detailed models predict how global warming impacts Arctic

Narrator:        This is Science Today.  The U.S. Department of Energy is funding a research program to investigate how global warming will affect the massive amounts of organic carbon locked up in the frozen Arctic landscape. Scientists from the Lawrence Berkeley National Laboratory are joining a team of nationwide researchers to develop detailed models to predict how warming will impact the Arctic environment.

Hubbard:         So what we envision is actually a hierarchical modeling framework with the idea that different processes dominate at different scales.

Narrator:         Susan Hubbard is a geophysicist and a co-principal investigator on the project. She says that at the local scale the project will analyze carbon transfer in microorganisms and plants.

Hubbard:          That by itself is fairly unusual for arctic systems, where we're including the reactive component, the geochemistry, the biology. So that's novel in itself. But then we have two other scales up from that, that which will all feed up to that global model.

Narrator:          For Science Today, I'm Larissa Branin.