Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2017.04.020 |
The role of fog in haze episode in Tianjin, China: A case study for November 2015 | |
Hao, Tianyi1; Han, Suqin1; Chen, Shucheng2; Shan, Xiaolin3; Zai, Ziying4; Qiu, Xiaobin1; Yao, Qing4; Liu, Jingle1; Chen, Jing1; Meng, Lihong1 | |
2017-09-15 | |
发表期刊 | ATMOSPHERIC RESEARCH
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ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2017 |
卷号 | 194 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | A severe haze episode that heavy fog appeared in its later stage emerged in Tianjin, east-central China, from November 27 to December 2, 2015. With meteorological data and pollutants monitoring data, the characteristics of this event and the role of fog in haze were investigated. During this process, the visibility was less than 600 m, especially in the haze and fog coexisting period (below 100 m). The peak value of PM2.5 mass concentration appeared in the haze only period was 446 mu g/m(3). The fog played a role in scavenging and removing PM2.5 during haze and fog coexisting period. The surface high humidity province can match well with the high PM2.5 concentration region in pollutants removal period. The fog top height was reduced to about 200 m by cold air. Although the cold air has arrived in Tianjin high altitude, the saturated layer below 200 m maintained for nearly 12 h. The heavy fog prevented the momentum in upper atmosphere from transmitting downward and caused the high altitude cold air difficult to reach the ground. The latent heat flux was transmitted upward ahead of sensible heat flux in pollutants removal period, indicating the increasing tendency of mechanical turbulence after fog dissipation. Turbulent kinetic energy (E-tk,E-) and the surface mean kinetic energy (E) also enhanced after fog dissipation. It demonstrates that the termination of haze was delayed by heavy fog. |
英文关键词 | Tianjin Haze Fog Turbulence Dissipation mechanism |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000405043700020 |
WOS关键词 | AEROSOL OPTICAL-PROPERTIES ; CONDENSATION NUCLEI ; VISIBILITY ; PLAIN ; TRENDS ; AREA |
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/38088 |
专题 | 地球科学 |
作者单位 | 1.Tianjin Inst Meteorol Sci, 100 Qi Xiang Tai Rd, Tianjin 300074, Peoples R China; 2.Tianjin Meteorol Observat Ctr, 62 Friendship Rd, Tianjin 300061, Peoples R China; 3.Tianjin Binhai New Area Meteorol Bur, 26 Tai Xiang Rd, Tianjin 300457, Peoples R China; 4.Tianjin Environm Meteorol Ctr, 100 Qi Xiang Tai Rd, Tianjin 300074, Peoples R China |
推荐引用方式 GB/T 7714 | Hao, Tianyi,Han, Suqin,Chen, Shucheng,et al. The role of fog in haze episode in Tianjin, China: A case study for November 2015[J]. ATMOSPHERIC RESEARCH,2017,194. |
APA | Hao, Tianyi.,Han, Suqin.,Chen, Shucheng.,Shan, Xiaolin.,Zai, Ziying.,...&Meng, Lihong.(2017).The role of fog in haze episode in Tianjin, China: A case study for November 2015.ATMOSPHERIC RESEARCH,194. |
MLA | Hao, Tianyi,et al."The role of fog in haze episode in Tianjin, China: A case study for November 2015".ATMOSPHERIC RESEARCH 194(2017). |
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