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Item #d95oct10

"Modeling Ocean Circulation," A.J. Semtner (Dept. Oceanog., Naval Postgraduate Sch., Monterey CA 93943), Science, 269(5229), 1379-1385, Sep. 8, 1995.

An extensive review of the status of ocean numerical models, which have become quite realistic over the past several years as a result of improved methods, faster computers, and global data sets. Now models can represent not only ocean currents, but also the consequences for climate, biology and geochemistry over time spans of months to decades. However, much remains to be understood from models about ocean circulation on longer time scales, including the predictability of climate and the ocean's influence on global change.

Item #d95oct11

"Climate and the Conveyor," G.C. Bond (Lamont-Doherty Earth Observ., Rte. 9W, Palisades NY 10964), Nature, 377(6548), 383-384, Oct. 5, 1995.

Discusses three recent studies that support the theory that the sudden climate jumps of the last glacial period are related to sudden changes in the operation of the Atlantic Ocean's "conveyor belt" or deep water circulation. These changes could have been triggered by injections of glacial meltwater, but if they can occur independent of glacial ice, the odds of a climate jolt in the near future might be much higher.

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