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首页> 美国政府科技报告 >Climate Stability: The Role of the Hydrological Cycle and the Thermohaline Circulation in the Last Deglaciation, in the Modern Climate, and in a CO2 Warmed Climate
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Climate Stability: The Role of the Hydrological Cycle and the Thermohaline Circulation in the Last Deglaciation, in the Modern Climate, and in a CO2 Warmed Climate

机译：气候稳定性：水文循环和热盐循环在最后的冰消期，现代气候和二氧化碳气候变暖中的作用

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The objective has been to determine the dominant feedbacks involving ocean, atmosphere, and cryosphere linked by the hydrological cycle which may exert significant control on latitudinal heat transport in the high latitude North Atlantic. This involves not only the climate stability of the late Pleistocene, but also that of the modern climate as perturbed by augmented atmospheric CO2 concentration. A detailed study of the hydrological cycle in the atmosphere and its linking with the thermohaline circulation of the North Atlantic Ocean is ultimately required. A simplified ocean box model, in which ocean surface heat and fresh water fluxes are determined by a linearized energy balance model (EBM) with a rudimentary hydrological cycle, is used as a lower boundary condition for an atmospheric general circulation model (AGCM). A second direction taken is to use simplified atmosphere and ocean components which allow for a full coupling between the two. Improvements in advection-diffusion algorithms, ocean carbon chemistry, pCO2 changes and long wave radiation, the atmospheric seasonal cycle, and ice sheet-bedrock models are discussed.

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