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根据2006年12月在北黄海走航连续观测所得pCO2数据,结合水文、化学和生物等要素的同步观测资料,对该海域pCO2分布及其影响因素进行了探讨。结果表明:冬季北黄海表层海水pCO2测值在203~683μatm之间,平均值为408μatm。辽南沿岸流及其影响区域是大气CO2汇区;山东半岛以北沿岸,122°E以西受渤海环流输送,黄河悬浮颗粒物影响的高浑浊度区域是大气CO2的一个强源区(最高值达到683μatm);而占据北黄海大部的黄海混合水以及北黄海整体上是大气CO2的弱源。冬季北黄海表层海水pCO2分布主要受控于海水温度、碳酸盐体系平衡和生物活动,即温度越高pCO2越高、DIC越高pCO2越高、叶绿素含量越高pCO2越低。其中辽南沿岸流及其影响区域生物活动的影响最为显著。而山东半岛以北沿岸的高浑浊度区域水体性质具有特殊性,较高的pCO2受控于高的DIC浓度以及陆岸的影响。
Based on the pCO2 data obtained from continuous observations of the North Yellow Sea in December 2006, the distribution of pCO2 and its influencing factors were discussed based on the simultaneous observation of hydrological, chemical and biological elements. The results showed that the pCO2 values of surface seawater in the northern North Yellow Sea in winter ranged from 203 to 683 μatm with an average of 408 μatm. The south coast of Liaonan and its influence area are the atmospheric CO2 sinks. In the north coast of Shandong Peninsula, it is transported by the Bohai Sea to the west of 122 ° E. The high-turbidity area affected by the suspended particulates of the Yellow River is a strong source area of atmospheric CO2 (up to 683μatm). However, the Yellow Sea mixed water that occupies most of the northern Yellow Sea and the northern Yellow Sea as a whole are weak sources of atmospheric CO2. The distribution of pCO2 in surface seawater of North Yellow Sea in winter is mainly controlled by seawater temperature, carbonate system balance and biological activities. That is, the higher the temperature is, the higher the pCO2, the higher the DIC, the higher the pCO2 and the lower the chlorophyll content pCO2. Among them, the influence of biological activities in the coastal areas and the affected areas in South China Sea is the most significant. However, the water body in the high turbidity region along the coast of the north of Shandong Peninsula has its own particularity. The higher pCO2 is controlled by the high concentration of DIC and the influence of land bank.