海面二氧化碳通量的动力学分析  

DYNAMICS ANALYSIS FOR THE FLUX OF CARBON DIOXIDE ACROSS THE SEASURFACE

作　　者：张淮[1] 吴克俭[1] 楼顺里 

机构地区：[1]青岛海洋大学物理海洋研究所

出　　处：《青岛海洋大学学报（自然科学版）》1996年第4期446-452,共7页Journal of Ocean University of Qingdao

基　　金：国家自然科学基金

摘　　要：探讨海气间二氧化碳的气体交换。指出海面气体交换的物理过程与大气的强迫作用有关。动力学分析表明：交换速度主要依赖于溶解度、摩擦速度和阻碍系数；海面通量则决定于海与气的浓度差和交换速度，而交换速度随风速增加而增大，随温度增大而减小，其模拟值与风洞实验值基本一致。根据１９９３年１０月、１９９４年４月和１０月在东海三个航次的测定和计算表明，东海海面的二氧化碳通量指向下，其平均值为－４５．The CO 2 exchange between the atmosphere and sea water is discussed. The physical process of exchange at sea surface is closely related with the atmospheric forcing. We report the result of a dynamics analysis of the CO 2 flux across the sea surface, and a calculated example over the shelf area of the East China Sea. The analysis and calculation show that the CO 2 vertical flux at sea surface mainly depends on the CO 2 concentration difference between the sea water and the atmosphere. Its exchange velocity is affected by the friction velocity, solubility and resistivity. The agreement between this exchange velocity and recent wind tunnel exprimental results is good at wind speeds over the range 4￣10m/s. This flux can be increased very fast with the increase of wind speed, but very slowly with the increase of temperature. During the three cruise expeditions in Oct. 1993, Apr. and Oct. 1994, the CO 2 vertical flux at sea surface was downward over the shelf area of the East China Sea. Because the CO 2 partial pressure difference between sea water and the atmosphere was negative, the flux value was-45.5μg·m -2 h -1 on the average.

关 键 词：海面 二氧化碳通量 动力分析 溶解度 

分 类 号：P734.45[天文地球—海洋化学]