生物泵在海洋碳循环中的作用

生物过程在海洋碳的自然分布中起着重要的作用,它使海洋中碳的储量大大增加.作者用包含海洋化学过程和一个简单生物过程的三维碳循环模式模拟了生物泵在海洋碳循环中的作用.模式计算的结果表明:生物过程产生的海-气通量的量级非常大;在高纬度和赤道它的量级与因溶解度泵产生的碳的海-气通量差不多.在高纬度地区这两个通量符号相反,使组合模式中的通量大小比只有溶解度泵时的通量小,而在赤道两者的符号相同,使组合模式在赤道的通量大于只有溶解度泵时的通量.在稳态条件下生物泵对海洋吸收人为CO2的直接影响很小.

The Role of Biological Pump in Ocean Carbon Cycle

A three--dimensional ocean carbon cycle model, which is a general circulation model coup- led with simple biogeochemical processes, is used to simulate the role of biologlcal pump in ocean car- bon cycle. A model simulation of the global carbon cycle demonstrates that the biological and solubility pumps are of comparable importance in determining the spatial distribution of annual mean air-sea fluxes in the world ocean The model also confirms that the impact of the (steady state) biological pump on the magnitude and spatial distribution of anthropogenic CO2 uptake is minimal.