建模全球环境命运并量化短链,中链和长链化抛的全球源-受体关系
Chengkang Chen1,2, Li Li3, Shaoxuan Zhang2
1Department of Physical and Environmental Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto M1C 1A4, Ontario, Canada.
概括
全球甲 (CPs) 排放量已在全球范围内扩散. 这项研究模拟了CP的分散,揭示了欧洲,北美和东亚对北极等偏远地区污染的重大贡献.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 全球污染研究 全球污染研究
背景情况:
- 由于数十年的排放和远程运输,化 (CPs) 是持久的环境污染物.
- 了解短链,中链和长链CP (SCCP,MCCP,LCCP) 的全球分布对于追踪它们在偏远地区的起源至关重要.
研究的目的:
- 通过使用历史排放数据,模拟1930年至2020年CP的全球分散.
- 确定在偏远地区 (如北极,南极和西藏高原) 导致CP污染的主要来源.
主要方法:
- 使用BETR-Global模型模拟CP分散.
- 纳入了从1930年到2020年的历史排放估计.
主要成果:
- 在北极,南极和西藏高原,CP度呈现上升趋势.
- 到2020年,东亚,欧洲和北美是高北极CP污染的主要贡献者.
- 南半球和西藏高原的排放分别对南极和高原产生了重大影响.
结论:
- 欧洲和北美的排放量历来为远程CP污染做出了贡献,目前影响高北极MCCP和LCCP水平.
- 东亚的排放是所有三个研究的偏远地区SCCP和MCCP污染的主要来源.
- 调查结果有助于评估全球和区域CP减排战略的有效性.
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