DISSOLVED ORGANIC-CARBON IN THE EQUATORIAL ATLANTIC-OCEAN

被引:74
作者
THOMAS, C [1 ]
CAUWET, G [1 ]
MINSTER, JF [1 ]
机构
[1] LAB ARAGO,GDR INTERACT CONTINENT OCEAN 909,CNRS,F-66650 BANYULS SUR MER,FRANCE
关键词
D O I
10.1016/0304-4203(94)00061-H
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We measured the concentration of dissolved organic carbon (DOG) in the equatorial Atlantic Ocean, using a high-temperature carbon oxidation technique and platinized-quartz catalysts. Below 400 m, values are nearly homogeneous near 46 +/- 7 mu M C. Concentrations are higher, up to 97 mu M C at the surface, outside of the equatorial upwelling during the warm season. They are somewhat lower, near 66 mu M C on average, in upwelling waters during the cold season. These values are close to previously published data from the subtropical Atlantic Ocean, and to recent values for the Pacific Ocean. A box model of the equatorial upwelling suggests that only 20 +/- 15% of the exported flux of total biogenic carbon is in dissolved form.
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收藏
页码:155 / 169
页数:15
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