A Review of Atmospheric Micro/Nanoplastics: Insights into Source and Fate for Modelling Studies

IF 8.1 2区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
Fei Jiang, Chengze Gao, Arthur W. H. Chan, David O. Topping, Hongliang Zhang, Weijun Li, Hugh Coe, Xiaohong Liu, Joseph Ching, Zhonghua Zheng
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Abstract

Purpose of Review

Micro/nanoplastics (MNPs), as emerging pollutants, have attracted increasing attention due to their potential adverse effects on human health, ecosystems, and climate. The rapid, turbulent, and large-scale nature of atmospheric transport facilitates both horizontal and vertical movement of MNPs over long distances within a short time, largely independent of topographical constraints, thereby accelerating their global cycle and exacerbating their impacts. Despite growing interest, our understanding of the atmospheric lifecycle of MNPs remains limited. This review aims to synthesise recent advances in understanding the atmospheric lifecycle of MNPs, including their emission sources, long-range transport characteristics, and driving mechanisms. It also evaluates the key sources of uncertainty—particularly those related to emission flux estimates—and provides corresponding recommendations for future research.

Recent Findings

Current research on the atmospheric processes of MNPs primarily relies on a combination of observational data and numerical modelling. Two major uncertainties in atmospheric micro/nanoplastic (AMNP) emissions persist: the wide variability in marine emission estimates, which span four orders of magnitude, and the unresolved question of whether terrestrial or marine sources are the dominant contributors to AMNP emissions. Furthermore, this review highlights critical factors driving these uncertainties, including limited data availability, inconsistencies in observational methodologies, oversimplified simulations, and gaps in understanding atmospheric cycling mechanisms. Additionally, variations in the particle size ranges targeted by different observational and modelling studies hinder cross-comparisons and model evaluations, representing another important source of uncertainty.

Summary

AMNP research is constrained by multiple uncertainties that hinder a comprehensive understanding of their emissions, transport, and fate. To address these issues, we call for establishing a global network of standardised observations, improving sampling and simulation practices, and incorporating artificial intelligence. These strategies will enhance our understanding of the complete atmospheric cycle of MNPs, paving the way for more effective environmental management and better-informed policy decisions.

大气微/纳米塑料研究综述:模型研究的来源和命运
微/纳米塑料(MNPs)作为一种新兴的污染物,因其对人类健康、生态系统和气候的潜在不利影响而受到越来越多的关注。大气运输的快速、湍流和大尺度性质,在很大程度上不受地形限制,促进了跨国海洋微粒在短时间内长距离的水平和垂直运动,从而加速了它们的全球循环并加剧了它们的影响。尽管人们越来越感兴趣,但我们对MNPs大气生命周期的了解仍然有限。本文综述了MNPs大气生命周期的最新研究进展,包括其排放源、远程传输特性和驱动机制。它还评估了不确定性的主要来源,特别是与排放通量估算有关的不确定性来源,并为今后的研究提供了相应的建议。最近的发现目前对大气过程的研究主要依赖于观测数据和数值模拟的结合。大气微/纳米塑料(AMNP)排放的两个主要不确定性仍然存在:海洋排放估算的差异很大,跨度达四个数量级,以及陆地源还是海洋源是AMNP排放的主要来源这一尚未解决的问题。此外,本综述强调了导致这些不确定性的关键因素,包括有限的数据可用性、观测方法的不一致性、过于简化的模拟以及对大气循环机制的理解差距。此外,不同观测和模拟研究针对的颗粒大小范围的变化阻碍了交叉比较和模式评估,这是另一个重要的不确定性来源。np研究受到多种不确定性的限制,这些不确定性阻碍了对其排放、运输和命运的全面了解。为了解决这些问题,我们呼吁建立一个标准化观测的全球网络,改进采样和模拟实践,并纳入人工智能。这些战略将增进我们对MNPs的完整大气循环的了解,为更有效的环境管理和更明智的决策铺平道路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Current Pollution Reports
Current Pollution Reports Environmental Science-Water Science and Technology
CiteScore
12.10
自引率
1.40%
发文量
31
期刊介绍: Current Pollution Reports provides in-depth review articles contributed by international experts on the most significant developments in the field of environmental pollution.By presenting clear, insightful, balanced reviews that emphasize recently published papers of major importance, the journal elucidates current and emerging approaches to identification, characterization, treatment, management of pollutants and much more.
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