Simulation of export production and biological pump structure in the South China Sea
Simulation of export production and biological pump structure in the South China Sea
复制标题
南海出口生产及生物泵结构模拟
DOI：
10.1007/s00367-014-0384-0
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发表时间：
2014-09
期刊：
影响因子：
--
通讯作者：
Jun Tian
中科院分区：
文献类型：
--
作者：
Fei Chai;Peng Xiu;Huijie Xue;Jun Tian
颗粒有机碳（POC）的输出通量消耗了涌升的溶解无机碳（DIC），阻碍了剩余CO2向大气的释放。因此，POC的输出通量对碳和地球化学循环至关重要。利用三维物理-化学耦合模式（ROMS-CoSiNE）模拟了1958-2009年南海生物泵输出通量和结构的长期变化。模拟结果表明，南海东北部和中北部的POC输出通量冬季高，夏季低，而南海中部、西南部和南部的POC输出通量呈“W”型变化，冬、夏季两个最大值，春、秋季两个最小值。该型遵循东亚季风的变化，与观测结果一致。在年际尺度上，输出通量与厄尔尼诺-南方涛动反相，因此厄尔尼诺（拉尼娜）条件对应于低（高）输出通量。模拟的年平均POC输出通量高达1.95 mmol m-2day-1，这是低估了与实地观测相比。f-比率估计为~0.4。POC的Martin方程的B值为1.18±0.03。POC的再矿化速率大于经典的马丁方程，但与亚热带的对应方程一致。模拟结果表明，SCS是一个弱源的大气CO2通量估计为1.0 mmol m-2天-1。模拟结果提供了一个洞察的时间和空间变化的碳循环在这个季风驱动的，半封闭的盆地。
The export flux of particulate organic carbon (POC) consumes upwelled dissolved inorganic carbon (DIC), which hinders surplus CO2being released to the atmosphere. The export flux of POC is therefore crucial to the carbon and biogeochemical cycles. This study aims to model the long-term (1958–2009) variation of export flux and structure of the biological pump in the South China Sea (SCS) using a three-dimensional physical-biogeochemical coupled (ROMS-CoSiNE) model. The modeled POC export flux in the northeastern and north central SCS is high in winter and low in summer, whereas the flux in the central, southwestern and southern SCS varies following a “W” shape: two maxima in winter and summer, and two minima in spring and autumn. The pattern follows the variation of the East Asian monsoon and is consistent with observations. On the interannual scale, export flux is anti-phased with the El Niño-Southern Oscillation such that El Niño (La Niña) conditions correspond to low (high) export flux. Modeled annual mean POC export flux reaches up to 1.95 mmol m–2day–1, which is underestimated comparing with field observations. Thef-ratio is estimated to be ~0.4. The b value of the Martin equation for POC is 1.18±0.03. Remineralization rate of POC is greater than the classical Martin equation but is consistent with its subtropical counterparts. The modeled results indicate that the SCS is a weak source of atmospheric CO2with a flux estimated at 1.0 mmol m–2day–1. The modeled results provide an insight of the temporal and spatial variability of the carbon cycle in this monsoon-driven, semi-enclosed basin.
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影响因子：
4.5
作者：
N. M. Price;F. Morel
通讯作者：
N. M. Price;F. Morel
根据中国测量的太阳直接光谱辐射率和总宽带辐照度估算气溶胶单散射反照率
影响因子：
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作者：
通讯作者：
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影响因子：
--
作者：
Weifeng Yang;Yipu Huang;Min Chen;Y. Qiu;A. Peng;Lei Zhang
通讯作者：
Weifeng Yang;Yipu Huang;Min Chen;Y. Qiu;A. Peng;Lei Zhang
影响因子：
2.1
作者：
W. Deng;G. Wei
通讯作者：
W. Deng;G. Wei
影响因子：
--
作者：
S. Xie;Q. Xie;Dongxiao Wang;W. Liu
通讯作者：
S. Xie;Q. Xie;Dongxiao Wang;W. Liu