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在气候变暖的气候中加速内部潮
Yankun Gong1, Zhiwu Chen1, Jiexin Xu1
1State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China.
Science advances
|February 19, 2025
概括
全球变暖正在加速内部潮速度,未来的预测显示会大幅增加. 这种由海洋分层驱动的上升可能会影响海洋生态系统和能源转移.
科学领域:
- 海洋学 海洋学 海洋学
- 气候科学 气候科学
- 潮动力学 潮动力学
背景情况:
- 内部潮对于海洋混合和海洋生态系统至关重要.
- 之前对内部潮的研究范围和持续时间有限.
- 关于内部潮的长期全球数据很少,这阻碍了对气候变化影响的理解.
研究的目的:
- 为了研究内部潮的长期全球行为.
- 评估全球变暖对内部潮速度的影响.
- 确定内部潮动态变化的主要驱动因素.
主要方法:
- 利用了合模型相互比较项目第6阶段 (CMIP6) 的数据.
- 使用高分辨率实证潮 (HRET) 模型进行分析.
- 分析了过去和未来时期全球平均内潮速度的趋势.
主要成果:
- 发现了全球内潮速度显著加速的趋势.
- 历史上每十年的增速为0.4厘米/秒,预计每十年将达到2.0厘米/秒.
- 强化的上层海洋分层是主要的驱动因素,背景电流起着次要的作用.
结论:
- 预计在气候变暖的情况下,内部潮的传播速度会更快.
- 加快的内部潮可能会影响海洋能量级.
- 内部潮的变化可能会对海洋生物生产力产生重大影响.
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