二维海洋温盐环流碳循环模式

A Two Dimensional Ocean Thermohaline Circulation Carbon Cycle Model

提供了由二维温盐环流动力学模式得到的定常流场驱动的海洋碳循环模式。在认为海洋生物碳循环达到动态平衡的情况下，着重研究了无机碳的循环。在给定的工业革命前的大气ＣＯ２浓度强迫下，对海洋碳循环模式积分５０００年后，使其达到稳态。对于人为扰动，采用给定大气ＣＯ２浓度作为上边界条件，结果是，１９８０年至１９８９年海洋能吸收人为排放ＣＯ２的３６％。通过使用ＣＯ２的工业排放源和大气及海洋的联合模式，得到１９８０至１９８９年的边际气留比为０６６。比较两种方法所得的结果，可推出在工业革命前存在着非工业源，即生物源；１９４０年以后，则还存在着一个未知的汇。

This paper presents an ocean carbon cycle model driven by a constant flow field produced by a two-dimensional thermohaline circulation model Under the assumption that ocean biogenic carbon is considered to be in a dynamic equilibrium, the inorganic carbon cycle is emphatically studied Under the forcing of given preindustrial atmospheric carbon dioxide concentration, carbon cycle model is integrated for over five thousand years to obtain a steady state For the human perturbation, prescribed atmospheric carbon dioxide concentrations are used as the upper boundary condition Results show that the oceans can take up 36% of carbon dioxide released by human activities for the period of 1980～1989 By using industrial emission sources of carbon dioxide and a combined model of the atmosphere and ocean, a marginal airborn fraction of 0 66 is obtained for the period of 1980～1989 Through the comparison of the results from these two methods, it can be deduced that before industrial revolution a non industrial source exists, while after 1940, an extra sink is needed