Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-12709-2019 |
Trans-Pacific transport and evolution of aerosols: spatiotemporal characteristics and source contributions | |
Hu, Zhiyuan1; Huang, Jianping1; Zhao, Chun2; Ma, Yuanyuan3; Jin, Qinjian4; Qian, Yun5; Leung, L. Ruby5; Bi, Jianrong1; Ma, Jianmin1 | |
2019-10-10 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:19页码:12709-12730 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Aerosols in the middle and upper troposphere have a long enough lifetime for trans-Pacific transport from East Asia to North America to influence air quality on the west coast of the United States (US). Here, we conduct quasi-global simulations (180 degrees W-180 degrees E and 70 degrees S-75 degrees N) from 2010 to 2014 using an updated version of WRF-Chem (Weather Research and Forecasting model fully coupled with chemistry) to analyze the spatiotemporal characteristics and source contributions of trans-Pacific aerosol transport. We find that trans-Pacific total aerosols have a maximum mass concentration (about 15 mu g m(-3)) in the boreal spring with a peak between 3 and 4 km above the surface around 40 degrees N. Sea salt and dust dominate the total aerosol mass concentration below 1 km and above 4 km, respectively. About 80.8 Tg of total aerosols (48.7 Tg of dust) are exported annually from East Asia, of which 26.7 Tg of aerosols (13.4 Tg of dust) reach the west coast of the US. Dust contributions from four desert regions in the Northern Hemisphere are analyzed using a tracer-tagging technique. About 4.9, 3.9, and 4.5 Tg year(-1) of dust aerosol emitted from north Africa, the Middle East and central Asia, and East Asia, respectively, can be transported to the west coast of the US. The trans-Pacific aerosols dominate the column-integrated aerosol mass (similar to 65.5 %) and number concentration (similar to 80 %) over western North America. Radiation budget analysis shows that the inflow aerosols could contribute about 86.4 % (-2.91 W m(-2)) at the surface, 85.5 % (+1.36 W m(-2)) in the atmosphere, and 87.1 % (-1.55 W m(-2)) at the top of atmosphere to total aerosol radiative effect over western North America. However, near the surface in central and eastern North America, aerosols are mainly derived from local emissions, and the radiative effect of imported aerosols decreases rapidly. This study motivates further investigations of the potential impacts of trans-Pacific aerosols from East Asia on regional air quality and the hydrological cycle in North America. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000489869600001 |
WOS关键词 | INDIAN-SUMMER MONSOON ; LONG-RANGE TRANSPORT ; AIR-POLLUTION ; MINERAL DUST ; INTERCONTINENTAL TRANSPORT ; MIDDLE-EAST ; RADIATIVE IMPACT ; DESERT DUST ; ACID-RAIN ; ASIA |
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/187611 |
专题 | 地球科学 |
作者单位 | 1.Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou, Gansu, Peoples R China; 2.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei, Anhui, Peoples R China; 3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou, Gansu, Peoples R China; 4.Univ Kansas, Dept Geog & Atmospher Sci, Lawrence, KS 66045 USA; 5.Pacific Northwest Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA |
推荐引用方式 GB/T 7714 | Hu, Zhiyuan,Huang, Jianping,Zhao, Chun,et al. Trans-Pacific transport and evolution of aerosols: spatiotemporal characteristics and source contributions[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(19):12709-12730. |
APA | Hu, Zhiyuan.,Huang, Jianping.,Zhao, Chun.,Ma, Yuanyuan.,Jin, Qinjian.,...&Ma, Jianmin.(2019).Trans-Pacific transport and evolution of aerosols: spatiotemporal characteristics and source contributions.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(19),12709-12730. |
MLA | Hu, Zhiyuan,et al."Trans-Pacific transport and evolution of aerosols: spatiotemporal characteristics and source contributions".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.19(2019):12709-12730. |
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