海洋热结构和热带气旋特征之间的竞争调节了黄海和波海的海洋环境反应
Xiuting Wang1, Jiagen Li2, Liang Sun1
1School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, China.
Marine environmental research
|March 14, 2024
概括
热带气旋 (TCs) 影响海洋表面的变化. 在深水中,TC风速驱动冷却,叶绿素增加,而在浅水地区,TC很容易混合水柱的翻译速度很重要.
科学领域:
- 海洋学 海洋学 海洋学
- 气象学 天气学
- 环境科学 环境科学
背景情况:
- 热带气旋 (TCs) 显著影响海洋生态系统.
- 了解大陆架地区海洋对TC的反应,对于预测环境变化至关重要.
研究的目的:
- 调查从2002年到2020年在黄海和博海海域 (YBS) 的TCs的环境反应.
- 分析海洋热结构和TC特征如何相互作用以调节海洋表面变化.
主要方法:
- 混合层深度 (MLD),风力强力 (WPi),海面温度 (SST) 变化和叶绿素 (Chl-a) 变化的计算空间分布.
- 利用线性回归来将TC特征 (风速,转换速度,强迫深度) 与海洋表面变化相关联.
- 分析了MLD和海盆深度对TC诱导的海洋反应的影响.
主要成果:
- 由TC引起的SST冷却和Chl-a增加主要与TC强迫深度超过MLD时的TC风速有关.
- 当TC强迫深度小于MLD时,TC转换速度成为SST和Chl-a变化的主要因素.
- 突破MLD的TC是显著海洋反应的关键条件,在YBS中观察到区域差异.
结论:
- 海洋对TC的反应是由TC特征和海洋的热结构之间的复杂相互作用调节的.
- 混合层的深度和TC的强度是SST冷却程度和Chl-a增加的关键决定因素.
- 在TC经过后,Chl-a (7-8天) 的恢复时间比SST (>15天) 短.
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