Abstract
A workshop on oceanic thermohaline circulation (THC), its variability, and its role in the Earth's climate system drew 50 THC modeling researchers from Europe, North America, and the Far East to the Institute for Geophysics and Planetary Physics of the University of California at Los Angeles in October 1993. The participants compared views and identified directions for future work into this topic which, has generated a great deal of interest lately.The thermohaline circulation (THC) is forced by horizontal buoyancy contrasts at the ocean surface as a result of fluxes of heat and fresh water exchanged with the overlying atmosphere, sea ice, or the adjacent land through river runoff. THC refers to circulations at large spatial scales (1000 km) and buoyancy forcing that induces gravitational instability and convective overturning over an appreciable vertical interval (300 m), in some regions within the span of circulation. The THC is a major component of the climate system because it laterally transfers substantial amounts of heat, water, and chemical tracers, and contributes greatly to the system's variability.
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