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B. The Benefits of Computerized Climate Models

Narrator: This is Science Today. Using computerized climate models, scientists at the Lawrence Livermore National Laboratory are able to conduct experiments on the atmosphere, the oceans and their interactions using very complex computer codes.

Santer: And with the benefit of such models, one can perform experiments where you change some of the things that you know affect climate - the sun's energy output, volcanoes, greenhouse gases, sulfate aerosols, ozone and you see how the model climate system responds.

Narrator: Ben Santer, a scientist at the Lab's Climate Model Diagnosis and Intercomparison Program, says these simulations would be impossible without modern technology.

Santer: We relied on something like twenty-eight climate model experiments, each one of those experiments was 110 years in duration - this is simulated climate, so these 28 runs start roughly in 1890 - so that's 110 years of simulation times 28 experiments!

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