使用长期,全球,现场数据库的海洋微塑料密度分布的模式和趋势
Lonneke Goddijn-Murphy1, David Woolf2, Neil A James1
1Environmental Research Institute, University of the Highlands and Islands, Thurso, UK.
Marine pollution bulletin
|January 8, 2025
概括
全球微塑料密度每年翻一番,区域差异很大. 海洋微塑料的含量与降水和气候波动相关,如ENSO和PDO,影响海洋生态系统.
科学领域:
- 环境科学 环境科学
- 海洋学 海洋学 海洋学
- 气候科学 气候科学
背景情况:
- 微塑料污染是一个日益严重的全球问题,影响海洋生态系统.
- 了解微塑料的空间分布和时间趋势对于有效的缓解至关重要.
研究的目的:
- 评估1972年至2022年全球微塑料颗粒密度分布.
- 调查微塑料密度和气候变量之间的相关性.
- 创建全球海洋微塑料密度的空间互插图.
主要方法:
- 使用了NOAA NCEI全球海洋微塑料数据库 (1972-2022).
- 重新采样和格式化微塑料密度数据 (1° × 1°).
- 应用了普通的区块战争,用于空间插值.
- 来自哥白尼号气候变化服务的综合气候数据.
主要成果:
- 全球微塑料颗粒密度每十年大约翻一番.
- 密度与全球降水量和季节性变化有很强的相关性,特别是在北太平洋.
- 北太平洋的微塑料密度与厄尔尼诺南方振荡 (ENSO) 和太平洋十年振荡 (PDO) 指数相关,与北大西洋振荡 (NAO) 相反.
结论:
- 在全球范围内,微塑料污染正在增加,区域差异受气候模式的影响.
- 开发的微塑料密度图可以帮助卫星算法验证和影响评估.
- 研究结果强调需要考虑气候变化对海洋塑料污染的影响.
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