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南部翻转的循环会使得大西洋的深处迅速酸化
Fiz F Perez1, Marcos Fontela1, Maribel I García-Ibáñez1
1Instituto Investigaciones Marinas (IIM, CSIC), calle Eduardo Cabello, 6, 36208, Vigo, Spain.
Nature
|February 13, 2018
概括
工业二氧化碳 (CO2) 的海洋酸化正在导致北大西洋的和水平迅速下降. 这将在几十年内威胁到深海珊瑚的息地.
科学领域:
- 海洋学
- 海洋化学
- 气候科学
背景情况:
- 北大西洋积累了人为二氧化碳 (CO2),导致海洋酸化.
- 海洋酸化降低了碳酸的度,导致阿拉贡石和地平线变浅,使珊瑚暴露在腐蚀性水中.
研究的目的:
- 分析北大西洋地平线和的速度.
- 确定碳酸离子转移对深海生态系统的影响.
主要方法:
- 对北大西洋海洋学数据的数据库分析.
- 计算阿拉贡石和水平深度的变化.
- 通过大西洋南部翻转循环确定碳酸离子运输.
主要成果:
- 在亚极北大西洋的和地平线可能会在30年内下降1000-1700米.
- 在伊尔明格海,从1991年到2016年,海平线每年下降10到15米.
- 碳酸离子输送到深海比工业化前水平低44%.
结论:
- 海洋的酸性化正在威胁冷水珊瑚的息地.
- 由于二氧化碳增加而减少的碳酸运输可能会危及这些生态系统.
- 通过海洋循环, 酸化水将被运往南方,
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