概括
碳四化物 (CCl(4) 和甲 (CFMs) 在北冰洋深水中进行测量. 由于其长期的输入历史,CCl ((4) 可能是海洋循环和CO ((2) 吸收模型的有价值的追踪器.
科学领域:
- 海洋学 海洋学 海洋学
- 大气化学 大气化学
- 气候科学 气候科学
背景情况:
- 化甲基 (CFMs),甲基化 (CH(3) CCl(3) 和四化碳 (CCl(4) 是已知释放历史的人为化合物.
- 这些非反应性化合物可以作为研究海洋循环模式的短暂标记物.
- CCl(4) 具有很长的输入历史,使其成为海洋学研究的潜在强大工具.
研究的目的:
- 在北冰洋深水中测量CFM,CH3) CCl3) 和CCl4) 度.
- 评估CCl ((4) 作为海洋循环和海洋吸收化石燃料CO ((2) 的暂时标记物的实用性.
- 为了调查北冰洋底层水的年龄和起源.
主要方法:
- 气相色谱用于测量深北极水域中CFM,CH(3) CCl(3) 和CCl(4) 的度.
- 考虑了海洋循环模型来校准海洋吸收短暂的标记物.
- 人为释放的库存被用来解释痕迹数据.
主要成果:
- 在南森盆地底水中发现了可检测的CCl(4) 水位.
- 在相同的水样中,CFM和CH3) CCl3) 无法检测到.
- 这些发现表明,北极的地下水大约有50年的历史,或含有微小的非人类产生的CCl ((4) 成分.
结论:
- 碳四化物 (CCl(4) 是海洋循环研究的一个有前途的标记物,因为它具有很长的输入历史.
- 在北极底层水中存在没有CFM的CCl4) 提供了对水质年龄的洞察力.
- 进一步的研究可能会改进对北冰洋循环和CO2吸收的理解,使用CCl2作为标记物.
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