Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2019.01.007 |
Barrier effect of terrain on cold air and return flow of dust air masses | |
Sun Zhao-bin1; Wang Hua2; Guo Chunwei1,3; Wu Jin3; Cheng Tiantao4; Li Zi-ming3 | |
2019-05-15 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2019 |
卷号 | 220页码:81-91 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The occurrence and development of dusty weather are closely related to cold air and geographical conditions. This study employed regular and special weather and aerosol observation data and the simulation results of the Weather Research and Forecasting model to assess dusty weather processes that occurred during March 2018 in Beijing, China. Specifically, the vertical structures of the aerosol, temperature, pressure, and wind fields and the causes of the abnormalities in the movement paths of dust air masses were analyzed. The results indicated that the mountainous terrain, atmospheric stratification, and basic flow in the region were key factors that affected the thermodynamic properties and vertical structures of airflow over the mountains. The air retention zone resulted in a vertical structure, with anthropogenic aerosols in the lower layer of the atmosphere and foreign dust aerosols in the upper layer of the atmosphere during the early stage of the dust storm. The warming effect of subsidence prevented cold air masses carrying dust aerosols from further permeating the lower atmosphere, and the dust air mass was inhibited from directly moving into the plains region through the regular northward path. When the orthogonal component of the basic flow and mountains was relatively small, the dust air mass could not directly cross the mountains. Instead, the dust air mass moved eastward, reaching the downstream region with a lower terrain, where the air mass formed a bypass easterly wind flow under the force of the stronger pressure gradient of the near-surface layer. Finally, the dust air mass that had moved away from Beijing reversed and traveled back toward the plains region of Beijing, forming sandy and dusty weather and leading to significant increases in near-surface PM10 concentrations. |
英文关键词 | Sand and dust storms Cold air Warming Terrain Airflow |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000459364100008 |
WOS关键词 | SEVERE WINTER HAZE ; NORTHERN CHINA ; STORMS ; QUALITY ; EVENTS ; PM2.5 ; CLIMATE ; WIND ; ASIA |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/183205 |
专题 | 地球科学 |
作者单位 | 1.China Meteorol Adm, Inst Urban Meteorol, Beijing 100089, Peoples R China; 2.Beijing Meteorol Serv, Beijing 100089, Peoples R China; 3.Environm Meteorol Forecast Ctr Beijing Tianjin He, Beijing 100089, Peoples R China; 4.Fudan Univ, Dept Atmospher & Ocean Sci, Shanghai 200438, Peoples R China |
推荐引用方式 GB/T 7714 | Sun Zhao-bin,Wang Hua,Guo Chunwei,et al. Barrier effect of terrain on cold air and return flow of dust air masses[J]. ATMOSPHERIC RESEARCH,2019,220:81-91. |
APA | Sun Zhao-bin,Wang Hua,Guo Chunwei,Wu Jin,Cheng Tiantao,&Li Zi-ming.(2019).Barrier effect of terrain on cold air and return flow of dust air masses.ATMOSPHERIC RESEARCH,220,81-91. |
MLA | Sun Zhao-bin,et al."Barrier effect of terrain on cold air and return flow of dust air masses".ATMOSPHERIC RESEARCH 220(2019):81-91. |
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