GYIG OpenIR  > 环境地球化学国家重点实验室
Developing a statistical model to explain the observed decline of atmospheric mercury
Qingru Wu;  Yi Tang;  Shuxiao Wang;  Liang Li;  Ke Deng;  Guigang Tang;  Kaiyun Liu;  Dian Ding;  Hui Zhang
2020
发表期刊Atmospheric Environment
卷号243页码:117868
摘要

Mercury is a ubiquitous environmental toxicant and a cause for global concern due to its persistence and bioaccumulation in the environment. Evaluating the effectiveness of mercury emission control has become a significant issue after the entry into force of the Minamata Convention on Mercury in 2017. Atmospheric mercury concentration is an important indicator for anthropogenic emission control. Although Eulerian models are generally applied to evaluate emission reduction and policy effectiveness, the uncertainty of mercury reaction mechanisms and the insufficient grid accuracy of simulations limit the applications of this method at particular sites. In this study, we applied a statistical approach (the Generalized Additive Model, GAM) to explain the decline of atmospheric mercury concentration in Beijing, China, which followed a trend (Sen's slope) of −0.37 ng m−3 yr−1 (−8.0% yr−1). The statistical model represented 56.5% of the variance in mercury concentration and the adjusted R2 reached 0.547. Reduction of anthropogenic mercury emission, variation in meteorological condition, and change in global background level explained 51.5%, 47.1%, and 1.4% of the decrease of air mercury concentration, respectively. We validated the results using Hg emission inventories, seasonal Hg/CO value, and meteorological data. Considering the limitations of Eulerian models and the simplicity of statistical models, we suggest the application of GAM as an assessment method for long-term variation of atmospheric mercury.

关键词Atmospheric Mercury Concentration Sen's Slope Generalized Additive Model Mercury Emissions Meteorological Condition
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/11206
专题环境地球化学国家重点实验室
作者单位1.School of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Tsinghua University, Beijing, 100084, China
2.State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing, 100084, China
3.China National Environmental Monitoring Center, No. 8 Anwai Dayangfang, Beijing, 100012, China
4.Center for Statistical Science, Tsinghua University, Beijing, 100084, China
5.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Science, 99 Lincheng West Road, Guiyang, 550081, China
推荐引用方式
GB/T 7714
Qingru Wu;Yi Tang;Shuxiao Wang;Liang Li;Ke Deng;Guigang Tang;Kaiyun Liu;Dian Ding;Hui Zhang. Developing a statistical model to explain the observed decline of atmospheric mercury[J]. Atmospheric Environment,2020,243:117868.
APA Qingru Wu;Yi Tang;Shuxiao Wang;Liang Li;Ke Deng;Guigang Tang;Kaiyun Liu;Dian Ding;Hui Zhang.(2020).Developing a statistical model to explain the observed decline of atmospheric mercury.Atmospheric Environment,243,117868.
MLA Qingru Wu;Yi Tang;Shuxiao Wang;Liang Li;Ke Deng;Guigang Tang;Kaiyun Liu;Dian Ding;Hui Zhang."Developing a statistical model to explain the observed decline of atmospheric mercury".Atmospheric Environment 243(2020):117868.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Developing a statist(3313KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Qingru Wu;Yi Tang;Shuxiao Wang;Liang Li;Ke Deng;Guigang Tang;Kaiyun Liu;Dian Ding;Hui Zhang]的文章
百度学术
百度学术中相似的文章
[Qingru Wu;Yi Tang;Shuxiao Wang;Liang Li;Ke Deng;Guigang Tang;Kaiyun Liu;Dian Ding;Hui Zhang]的文章
必应学术
必应学术中相似的文章
[Qingru Wu;Yi Tang;Shuxiao Wang;Liang Li;Ke Deng;Guigang Tang;Kaiyun Liu;Dian Ding;Hui Zhang]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Developing a statistical model to explain the observed decline of_atmospheric mercury.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。