南海东北部春季海表pCO2分布及海-气CO2通量

姜亦飞; 王辉; 乔然; 吕洪刚; 刘桂梅

南海东北部春季海表pCO₂分布及海-气CO₂通量

国家海洋局国家海洋环境预报中心, 北京 100081

基金项目: 国家自然科学基金（41076011）；国家优秀青年基金（41222038）。

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出版历程
- 收稿日期: 2013-07-23

The distribution of pCO₂ in surface water and CO₂ flux at air-sea interface in northeast part of the South China Sea in spring

National Marine Environmental Forecasting Center, State Oceanic Administration, Beijing 100081, China

摘要

摘要: 2013年南海东北部春季共享航次采用走航观测方式，现场测定了表层海水和大气的二氧化碳分压（pCO₂）及相应参数。结合水文、化学等同步观测要素资料，对该海域pCO₂的分布变化进行了探讨。结果表明，陆架区受珠江冲淡水、沿岸上升流及生物活动的影响，呈现CO₂的强汇特征；吕宋海峡附近及吕宋岛西北附近海域受海表高温、黑潮分支“西伸”、吕宋岛西北海域上升流等因素影响，呈现强源特征。根据Wanninkhof的通量模式，春季整个南海东北部海域共向大气释放约4.25°10⁴ t碳。
- 南海 /
- pCO₂ /
- 碳循环
Abstract: Relying on the Sharing Marine Research Plan in northeast part of the South China Sea supported by National Research Foundation in the spring of 2013,we measured pCO₂ and corresponding parameters in surface water and air by underway measurement. Combined with the corresponding hydrological and biochemical data,we discussed the distribution and variation of pCO₂. The results indicated that,effected by Pearl River diluted water and coastal upwelling and biological activity,offshore shelf areas presented an obvious sink of atmospheric CO₂,while in Luzon Strait and northwest part of Luzon areas,effected by high temperatures and the intrusion of Kuroshio Current and Luzon upwelling,showed a strong source. In general,the northeast part of the South China Sea in spring add about 4.25°10⁴ tons of carbon to atmosphere.
- South China Sea /
- pCO₂ /
- carbon cycle

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