...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Paleoceanography >Physical and biological regulation of the soft tissue carbon pump
【24h】

Physical and biological regulation of the soft tissue carbon pump

机译：软组织碳泵的物理和​​生物调节

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

[ 1] We examine the relationship between aeolian iron deposition, ocean circulation, and atmospheric CO2 in the context of a global ocean circulation and biogeochemistry model with a coupled atmospheric reservoir of CO2. In common with previous models we find only a small reduction of atmospheric pCO(2) in response to an enhanced aeolian iron source consistent with Last Glacial Maximum conditions. We show this to be due to a combination of limiting factors including control of deep ocean iron concentrations by complexation to an organic ligand, regional compensation in changes to export production, and the maintenance of high preformed nutrient concentrations in deep water formation regions. We also demonstrate a significant sensitivity of atmospheric pCO(2) to changes in the residual mean overturning circulation of the Southern Ocean dominated by its regulation of the accumulation of biogenic carbon in the deep ocean. Although it is not enough to explain the full drawdown of pCO(2) to glacial levels, a reduction in overturning can lead to significant reduction in atmospheric pCO(2), providing mechanistic basis for the control by "vertical mixing'' inferred from box models.
机译：[1]我们在全球海洋环流和生物地球化学模型以及大气CO2耦合储层的背景下，研究了风铁沉积，海洋环流和大气CO2之间的关系。与以前的模型相同，我们发现响应于增强的风铁源与上一次冰河最大条件一致，大气中的pCO（2）仅有少量降低。我们证明这是由于多种限制因素的综合作用，包括通过与有机配体络合来控制深海铁浓度，对出口生产变化的区域补偿以及在深水形成区维持较高的预制养分浓度。我们还证明了大气pCO（2）对南部海洋剩余平均翻转循环变化的显着敏感性，该变化主要由其对深海中生物碳的积累的调控所决定。尽管不足以解释pCO（2）完全降到冰川水平，但倾覆的减少可导致大气pCO（2）的显着减少，从而为通过框推断的“垂直混合”提供了控制的机械基础楷模。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号