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首页> 外文期刊>Tellus, Series B. Chemical and Physical Meteorology >New early winter fCO(2) data reveal continuous uptake of CO2 by the Weddell Sea
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New early winter fCO(2) data reveal continuous uptake of CO2 by the Weddell Sea

机译:冬季初的新fCO(2)数据显示,韦德尔海不断吸收二氧化碳

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The Antarctic Ocean has been thought to be unimportant for the uptake of CO2 since upwelling of CO2-enriched deep waters would favour outgassing. Here we present the first direct f(co2) measurements obtained in early winter under the ice which, combined with estimated entrainment rates, show that the Weddell Sea, an area of intense upwelling manifested by the doming structure of the cyclonic gyre, has the capability to be almost continuously a sink fur atmospheric CO2. A Bur, effective after the ice cover disappears, is estimated to be -0.74+/-0.7 mmol m(-2) d(-1). Combined with a flux estimate in late autumn (- 2.0 mmol m(-2) d(-1)) integrated over the area of the central Weddell Gyre, a carbon uptake of 0.24 x 10(13) gC y(-1) (approximate to 24 x 10(-3) GtC y(-1) being approximate to 1 parts per thousand of global uptake) is computed, which is about a third of the strength of the biological pump of the Weddell Sea. [References: 48]
机译:人们认为,南极海洋对于二氧化碳的吸收并不重要,因为富含二氧化碳的深水上升将有利于除气。在这里,我们介绍了在冰雪初冬获得的第一个直接f(co2)测量值,结合估计的夹带率,表明威德海是旋风回旋的穹顶结构所表现出的强烈上升流区域,具有几乎连续不断地吸收大气中的二氧化碳。冰覆盖消失后有效的Bur估计为-0.74 +/- 0.7 mmol m(-2)d(-1)。结合在中央Weddell Gyre区域积分的深秋通量估计值(-2.0 mmol m(-2)d(-1)),碳吸收量为0.24 x 10(13)gC y(-1)(计算得出大约24 x 10(-3)GtC y(-1)大约是全球吸收量的千分之一(1),这大约是韦德尔海生物泵强度的三分之一。 [参考:48]

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