论文摘要
An observation-based approach is used to examine key characteristics of winter haze days in four major polluted regions in China. Major findings in this study are: first, there was no significant trend in the number of winter haze days in most provinces and districts in eastern China from 1973 to 2012, contrary to the 2.5-fold increase in the emissions of particulate matter and its precursors（PM emissions） in the same period of time. Second, meteorological and climate conditions rather than PM emissions are in control of the interannual variabilities and trends of winter haze days. These interannual variabilities（ranging from 24 to 125%） pose a substantial masking effect that must be overcome by any control of PM emissions before its impact becomes statistically detectable. Finally, we find that global warming may have contributed significantly to the trend of winter haze days in eastern China.
论文目录
文章来源
类型: 期刊论文
作者: Lu Mao,Run Liu,Wenhui Liao,Xuemei Wang,Min Shao,Shaw Chen Liu,Yuanhang Zhang
来源: National Science Review 2019年03期
年度: 2019
分类: 基础科学,工程科技Ⅱ辑,工程科技Ⅰ辑
专业: 环境科学与资源利用
单位: State Key Joint Laboratory of Environmental Simulation and Pollution Control, Beijing Innovation Center for Engineering Science and Advanced Technology, College of Environmental Sciences and Engineering, Peking University,Institute for Environmental and Climate Research, Jinan University,Guangdong University of Finance
基金: supported in part by the Major Program of the National Natural Science Foundation of China(916442220),the National Science and Technology Support Program(2014BAC21B01),the National Science Fund for Distinguished Young Scholars(41425020),the Public Welfare Projects for Environmental Protection in China(201509001)
分类号: X513
页码: 515-523
总页数: 9
文件大小: 278K
下载量: 30