Spatiotemporal variations and source on black carbon over Chongqing, China: Long-term changes and observational experiments
文献类型：期刊论文
| 作者 | Zhang, Yurong2; Han, Yong2; Dong, Li2; Deng, Ximing2; Ye, Dan2; Shao, Shiyong1
|
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2024-10-10 |
| 卷号 | 946 |
| 关键词 | Black carbon Chongqing Spatial and temporal variability Source apportionment Regional transport |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2024.174127 |
| 通讯作者 | Han, Yong(hany66@mail.sysu.edu.cn) |
| 英文摘要 | Black carbon (BC), as a critical light-absorbing constituent within aerosols, exerts profound effects on atmospheric radiation balance, climate, air quality and human health, etc. And it is also a long-standing focus in rapidly developing megacities. So, this study primarily focuses on investigating the variation characteristics and underlying causes of BC in Chongqing (31,914,300 population), which is one of the municipalities directly under the central government of China, serving as a pivotal economic hub in southwest China. Utilizing MERRA-2 reanalysis data, we examined the long-term changes of atmospheric BC over Chongqing 20 years (from 2002 to 2021). Moreover, BC mass concentration observations were conducted using an Aethalometer (AE-33) from March 15 to June 14, 2021 in Liangping District, Chongqing. The statistical analysis over the last 20 years reveals an annual mean BC concentration in Chongqing of 3.42 +/- 0.20 mu g/m3, exhibiting growth from 2002 to 2008, followed by a decline from 2008 to 2021. Monthly concentration displays a "U-shaped" trend, with the lowest values occurring in summer and the highest in winter. Due to topographical and meteorological influences, local emissions primarily contribute to BC pollution, characterized by a spatial distribution pattern of high in the west and low in the east. Ground observation indicates a distinct dual-peaked pattern in the diurnal variation of BC, with peak concentrations aligning with periods of high traffic emissions. The variation in BC is significantly influenced by meteorological conditions (wind, temperature, atmospheric boundary layer) and local pollution sources (predominantly traffic). Furthermore, extreme events analysis suggests that local emissions and regional transport (with higher contributions from Chongqing and the Sichuan Basin) predominantly contributed to BC |
| WOS关键词 | SOURCE APPORTIONMENT ; AIR-POLLUTION ; LIGHT-ABSORPTION ; SICHUAN BASIN ; METEOROLOGICAL CONDITIONS ; REGIONAL TRANSPORT ; PARTICULATE MATTER ; RELATIVE-HUMIDITY ; POTENTIAL SOURCES ; BOUNDARY-LAYER |
| 资助项目 | National Natural Science Foundation of China[42027804] ; National Natural Science Foundation of China[41775026] ; National Natural Science Foundation of China[41075012] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001262680200001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/136738]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Han, Yong |
| 作者单位 | 1.Chinese Acad Sci, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 2.Sun Yat Sen Univ, Sch Atmospher Sci, Adv Sci & Technol Space & Atmospher Phys Grp ASAG, Zhuhai 519082, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yurong,Han, Yong,Dong, Li,et al. Spatiotemporal variations and source on black carbon over Chongqing, China: Long-term changes and observational experiments[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,946. |
| APA | Zhang, Yurong,Han, Yong,Dong, Li,Deng, Ximing,Ye, Dan,&Shao, Shiyong.(2024).Spatiotemporal variations and source on black carbon over Chongqing, China: Long-term changes and observational experiments.SCIENCE OF THE TOTAL ENVIRONMENT,946. |
| MLA | Zhang, Yurong,et al."Spatiotemporal variations and source on black carbon over Chongqing, China: Long-term changes and observational experiments".SCIENCE OF THE TOTAL ENVIRONMENT 946(2024). |
入库方式： OAI收割
来源：合肥物质科学研究院
浏览0
下载0
收藏0
其他版本
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。