Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-15-0593.1 |
Impact of Chinese Urbanization and Aerosol Emissions on the East Asian Summer Monsoon | |
Jiang, Zhihong1,2; Huo, Fei1,2; Ma, Hongyun1,2; Song, Jie3; Dai, Aiguo4,5 | |
2017-02-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Impacts of urbanization and anthropogenic aerosols in China on the East Asian summer monsoon (EASM) are investigated using version 5.1 of the Community Atmosphere Model (CAM5.1) by comparing simulations with and without incorporating urban land cover and/or anthropogenic aerosol emissions. Results show that the increase of urban land cover causes large surface warming and an urban frictional drag, both leading to a northeasterly wind anomaly in the lower troposphere over eastern China (EC). This weakens the southerly winds associated with the EASM and causes a convergence anomaly in southern China (SC) with increased ascent, latent heating, and cloudiness. The enhanced latent heating reinforces surface convergence and upper-level divergence over SC, leading to more northward advection in the upper level into northern China (NC) and descending between 30 degrees and 50 degrees N over East Asia. Cloudiness reduction, adiabatic heating, and warm advection over NC all enhance the urban heating there, together causing anomalous tropospheric warming at those latitudes over East Asia. Anthropogenic aerosols cause widespread cooling at the surface and in the troposphere over EC, which decreases the summer land-ocean thermal contrast, leading to a weakened EASM circulation with reduced moisture transport to NC. This results in wetter and drier conditions over SC and NC, respectively. When both the urbanization and anthropogenic aerosols are included in the model, aerosols' cooling is partially offset by the urban heating, and their joint effect on the circulation is dominated by the aerosols' effect with a reduced magnitude. In the combined experiment, surface and tropospheric temperatures are also altered by the decrease (increase) in cloudiness over NC (SC) with most of the cooling confined to SC, which further weakens the EASM circulation. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000395512300012 |
WOS关键词 | LAND-COVER CHANGE ; DECADAL VARIATION ; CLIMATE ; PRECIPITATION ; RAINFALL ; PARAMETERIZATION ; SENSITIVITY ; CLOUDS ; MODEL ; MICROPHYSICS |
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/19609 |
专题 | 气候变化 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Minist Educ, Key Lab Meteorol Disaster, Nanjing, Jiangsu, Peoples R China; 2.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Joint Int Res Lab Climate & Environm Change, Nanjing, Jiangsu, Peoples R China; 3.Northern Illinois Univ, Dept Geog, De Kalb, IL USA; 4.SUNY Albany, Dept Atmospher & Environm Sci, Albany, NY 12222 USA; 5.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA |
推荐引用方式 GB/T 7714 | Jiang, Zhihong,Huo, Fei,Ma, Hongyun,et al. Impact of Chinese Urbanization and Aerosol Emissions on the East Asian Summer Monsoon[J]. JOURNAL OF CLIMATE,2017,30(3). |
APA | Jiang, Zhihong,Huo, Fei,Ma, Hongyun,Song, Jie,&Dai, Aiguo.(2017).Impact of Chinese Urbanization and Aerosol Emissions on the East Asian Summer Monsoon.JOURNAL OF CLIMATE,30(3). |
MLA | Jiang, Zhihong,et al."Impact of Chinese Urbanization and Aerosol Emissions on the East Asian Summer Monsoon".JOURNAL OF CLIMATE 30.3(2017). |
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