海洋分层对溶解的多环芳 (PAH) 的影响:从全球观测到深度学习
Mengyang Liu1,2, Haowen Zheng1, Minggang Cai1
1State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, College of the Environment and Ecology, Xiamen University, Xiamen 361102, P. R. China.
Environmental science & technology
|August 31, 2023
概括
海洋分层显著增加了海水中的多环芳 (PAHs). 这项研究揭示了分层和PAH积累之间的正相关性,突出了气候变化方面的担忧.
科学领域:
- 环境化学环境化学
- 海洋学 海洋学 海洋学
- 生物地质化学生物地质化学
背景情况:
- 海洋分层影响生物地化学过程.
- 层分化的对有机污染物的影响,如多环芳 (PAHs) 尚不清楚.
- 氧化是一种在全球范围内广泛存在的有机污染物.
研究的目的:
- 研究海洋分层与溶解PAHs的分布之间的关系.
- 量化分层对PAH积累在水柱中的影响.
- 使用深度学习模型预测PAH库存.
主要方法:
- 从全球海洋和边缘海洋中溶解的PAHs的分析.
- 与海洋初级生产率和分层指数相关的PAH垂直分布的统计分析.
- 开发和应用深度学习神经网络模型用于PAH库存估计.
主要成果:
- 在分层指数和PAH库存之间发现了显著的正对数关系 (R2 = 0.50,p < 0.05).
- 深度学习模型准确预测了PAH库存,显示了与观察值 (R2 ≥0.92) 的实质一致.
- 强化海洋分层被确定为PAH在水柱中的积累的驱动因素.
结论:
- 海洋分层在多环芳的积累中起着至关重要的作用.
- 由于全球变暖而导致海洋分层的增加可能会导致海洋环境中PAHs度更高.
- 需要进一步关注,以了解在不断变化的海洋条件下有机污染物的环境命运.
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