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量化微塑料大小,形状和密度对其运输方式的影响:一个建模方法

Y Huang¹, Z Yang², T Wang¹

¹Pacific Northwest National Laboratory, Coastal Sciences Division, 1100 Dexter Ave. N., Seattle 98109, WA, USA.

Marine pollution bulletin

|May 16, 2024

概括

准确的微塑料 (MP) 分布预测对于海洋健康至关重要. 一个新的模型,FVCOM-MP,准确地模拟了MP运输模式和垂直配置文件,改进了风险评估.

科学领域:

环境科学环境科学
海洋学海洋学海洋学
海洋生物学海洋生物学

背景情况:

微塑料 (MP) 对海洋生态系统和人类健康构成重大风险.
准确预测MP分布对于降低风险至关重要.
现有的数值模型不能充分反映MP特征 (大小,形状,密度),并且缺乏对垂直配置文件的彻底验证.

研究的目的:

在有限体积社区海洋模型 (FVCOM) 框架内开发和验证微塑料运输模型 (FVCOM-MP).
将微塑料的特性纳入模型,以改善运输动态的表现.
提高对水生系统中微塑料动态的理解.

主要方法:

通过将微塑料特性纳入FVCOM框架,开发了FVCOM-MP.
根据实验和分析数据验证模型,重点关注MP运输模式和转换.
引入了相位图来根据粒子特征对MP运输方式进行分类.

主要成果:

在各种运输方式 (床载,表面载,悬浮载,混合载) 中,FVCOM-MP成功地复制了微塑料配置文件.
该模型准确地模拟了MP的垂直配置文件和不同运输方式之间的过渡.
阶段图有效地对各种现实世界微塑料颗粒的运输方式进行分类.

结论:

FVCOM-MP提供了一种经过验证的工具,用于在水生环境中准确预测微塑料的运输.
整合MP特征和相位图,提高了对微塑料动态的理解.
改进的MP建模对于有效的环境风险评估和缓解策略至关重要.

关键词:

水力动力学建模的方法微塑料的特性微塑料的特性微塑料的运输方式微塑料的垂直形状是微塑料的垂直形状定位/上升速度的速度.动荡的混合混合.

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