Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-7793-2017 |
Air stagnation in China (1985-2014): climatological mean features and trends | |
Huang, Qianqian; Cai, Xuhui; Song, Yu; Zhu, Tong | |
2017-06-28 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Air stagnation is an important meteorological measure of unfavorable air pollution conditions, but little is known about it in China. We conducted a comprehensive investigation of air stagnation in China from January 1985 to December 2014 based on sounding and surface observations from 81 stations. The stagnation criteria were revised to account for the large topographical diversity in the country. It is found that the annual mean of air stagnation occurrences is closely related to general topography and climate features. Two basins in the northwest and southwest of China, the Tarim and Sichuan basins, exhibit the most frequent stagnation occurrence (50% of days per year), whereas two plateaus (the Qinghai-Tibet Plateau and the Inner Mongolian plateau) and the eastern coastal areas experience the least (20% of days per year). Over the whole country, air stagnation is at a maximum in summer and a minimum in winter, except for Urumchi, a major city in northwestern China where stagnation maintains a rather constant value year round with a minimum in spring. There is a nationwide positive trend in stagnation occurrence during 1985-2014, with the strongest increasing centers over Shandong Peninsula in eastern China and southern Shaanxi in central China. Changes in air stagnation occurrences are dependent on three components (upper-and lower-air winds and precipitationfree days). This shows that the behavior of upper-air wind speeds is the main driver of the spatial distribution and trends in air stagnation, followed by near-surface winds and dry days, which contribute the least. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404681400005 |
WOS关键词 | UNITED-STATES ; PRECIPITATION CHANGES ; POLLUTION ; AEROSOLS ; OZONE ; HAZE ; SENSITIVITY ; QUALITY ; PM2.5 |
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/24988 |
专题 | 地球科学 |
作者单位 | Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China |
推荐引用方式 GB/T 7714 | Huang, Qianqian,Cai, Xuhui,Song, Yu,et al. Air stagnation in China (1985-2014): climatological mean features and trends[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(12). |
APA | Huang, Qianqian,Cai, Xuhui,Song, Yu,&Zhu, Tong.(2017).Air stagnation in China (1985-2014): climatological mean features and trends.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(12). |
MLA | Huang, Qianqian,et al."Air stagnation in China (1985-2014): climatological mean features and trends".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.12(2017). |
条目包含的文件 | 条目无相关文件。 |
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