Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-4201-2018 |
Climatic factors contributing to long-term variations in surface fine dust concentration in the United States | |
Pu, Bing1,2; Ginoux, Paul2 | |
2018-03-27 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:6页码:4201-4215 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | High concentrations of dust particles can cause respiratory problems and increase non-accidental mortality. Studies found fine dust (with an aerodynamic diameter of less than 2.5 mu m) is an important component of the total PM2.5 mass in the western and central US in spring and summer and has positive trends. This work examines climatic factors influencing long-term variations in surface fine dust concentration in the US using station data from the Interagency Monitoring Protected Visual Environments (IMPROVE) network during 1990-2015. The variations in the fine dust concentration can be largely explained by the variations in precipitation, surface bareness, and 10 m wind speed. Moreover, including convective parameters such as convective inhibition (CIN) and convective available potential energy (CAPE) that reveal the stability of the atmosphere better explains the variations and trends over the Great Plains from spring to fall. While the positive trend of fine dust concentration in the southwestern US in spring is associated with precipitation deficit, the increase in fine dust over the central Great Plains in summer is largely associated with enhanced CIN and weakened CAPE, which are caused by increased atmospheric stability due to surface drying and lower-troposphere warming. The strengthening of the Great Plains low-level jet also contributes to the increase in fine dust concentration in the central Great Plains in summer via its positive correlation with surface winds and negative correlation with CIN. Summer dusty days in the central Great Plains are usually associated with a westward extension of the North Atlantic subtropical high that intensifies the Great Plains low-level jet and also results in a stable atmosphere with subsidence and reduced precipitation. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428467700003 |
WOS关键词 | AMERICAN REGIONAL REANALYSIS ; LOW-LEVEL JET ; AFRICAN DUST ; CONVECTIVE INHIBITION ; SUBTROPICAL HIGHS ; RANGE TRANSPORT ; NORTH-AMERICA ; MINERAL DUST ; AIR-QUALITY ; PART I |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/30619 |
专题 | 地球科学 |
作者单位 | 1.Princeton Univ, Atmospher & Ocean Sci Program, Princeton, NJ 08544 USA; 2.NOAA, Geophys Fluid Dynam Lab, Princeton, NJ 08540 USA |
推荐引用方式 GB/T 7714 | Pu, Bing,Ginoux, Paul. Climatic factors contributing to long-term variations in surface fine dust concentration in the United States[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(6):4201-4215. |
APA | Pu, Bing,&Ginoux, Paul.(2018).Climatic factors contributing to long-term variations in surface fine dust concentration in the United States.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(6),4201-4215. |
MLA | Pu, Bing,et al."Climatic factors contributing to long-term variations in surface fine dust concentration in the United States".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.6(2018):4201-4215. |
条目包含的文件 | 条目无相关文件。 |
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 |
[Pu, Bing]的文章 |
[Ginoux, Paul]的文章 |
百度学术 |
百度学术中相似的文章 |
[Pu, Bing]的文章 |
[Ginoux, Paul]的文章 |
必应学术 |
必应学术中相似的文章 |
[Pu, Bing]的文章 |
[Ginoux, Paul]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
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。
修改评论