预测波罗的海西部历史缺氧地区:一种多模型方法
Sarah Piehl1, Jacob Carstensen2, Thomas Neumann3
1Coastal Sea Geography Group, Leibniz Institute for Baltic Sea Research Warnemünde, Rostock 18119, Germany.
Marine pollution bulletin
|July 31, 2025
概括
沿海环氧化导致脱氧,影响海洋健康. 这项研究使用多模型方法量化了波罗的海西部历史的氧气缺乏,揭示了广泛存在的,尽管很少出现缺氧的情况.
科学领域:
- 海洋生态海洋生态学
- 海洋学 海洋学 海洋学
- 环境科学环境科学
背景情况:
- 人类活动增加了对海洋生态系统的压力.
- 沿海环氧化导致脱氧,这是一个重要的环境压力因素.
- 量化历史氧气缺乏对于评估良好环境状况至关重要.
研究的目的:
- 估计1949年至1969年波罗的海西部受氧缺乏影响的历史区域.
- 整合多种建模方法,以获得更可靠的估计.
- 提供数据,以确定氧气缺乏的生态指标的目标.
主要方法:
- 统计学,机械学和机器学习模型的综合方法.
- 估计近底水域的缺氧 (氧气<6 mg/l) 和缺氧 (氧气<2 mg/l).
- 对1949年至1969年的历史数据进行分析.
主要成果:
- 缺氧是罕见的 (<1%到3%的区域).
- 在所有分盆地,氧气缺乏影响了该地区的11% (高置信度) 到37% (低置信度).
- 模型预测有所不同,统计模型预测较小的区域,机械模型预测较大的区域.
结论:
- 多模型方法提高了对估计历史氧气缺乏的信心.
- 从历史上看,波罗的海西部的重要地区经历了氧气缺乏.
- 不确定性仍然存在,特别是由于数据限制,在底部边界层的建模中.
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