南大洋的生物地质化学划分
I Marinov1, A Gnanadesikan, J R Toggweiler
1Atmospheric and Oceanic Sciences Program, Princeton University, Princeton, New Jersey 08540, USA. imarinov@mit.edu
Nature
|June 23, 2006
概括
南大洋是南方的海洋.
科学领域:
- 海洋学 海洋学 海洋学
- 生物地质化学生物地质化学
- 气候科学 气候科学
背景情况:
- 南大洋的营养和碳循环显著影响全球二氧化碳 (CO2) 水平和生物生产.
- 之前的模型表明,高度地区对于大气二氧化碳调节至关重要,营养利用与二氧化碳水平密切相关.
研究的目的:
- 调查特定的南大洋地区是否对空海二氧化碳平衡和生物出口生产产生不同的影响.
- 在南大洋内确定碳循环和生物出口的独特区域控制.
主要方法:
- 利用海洋一般循环模型来模拟南大洋表面营养物质减少的增加.
- 分析了模型对不同海洋地区营养物质可用性变化的反应.
主要成果:
- 大气中的二氧化碳平衡主要由南极深水形成区域的生物和循环调节.
- 全球生物出口产量主要由南极洲中介和模式水形成区域的生物和循环控制.
结论:
- 南大洋的南极和南极以下地区之间存在生物地质化学分裂.
- 这种分离表明有针对性的气候干预有可能明显地影响碳循环或生物生产.
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