globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.50821
论文题名:
Spatial and temporal variations of new particle formation in East Asia using an NPF-explicit WRF-chem model: North-south contrast in new particle formation frequency
作者: Matsui H.; Koike M.; Takegawa N.; Kondo Y.; Takami A.; Takamura T.; Yoon S.; Kim S.-W.; Lim H.-C.; Fast J.D.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:20
起始页码: 11647
结束页码: 11663
语种: 英语
英文关键词: aerosol ; condensation nuclei ; East Asia ; new particle formation ; regional model ; WRF-chem
Scopus关键词: Aerosols ; Condensation ; Nucleation ; Sulfur dioxide ; Surface measurement ; Weather forecasting ; Condensation nuclei ; East Asia ; New particle formation ; Regional model ; WRF-chem ; Frequency estimation ; aerosol formation ; atmospheric modeling ; boundary layer ; cloud condensation nucleus ; latitude ; nucleation ; particle size ; regional climate ; spatial variation ; temporal variation ; weather forecasting ; China ; Far East ; Japan ; Korea
英文摘要: A recently developed new particle formation (NPF)-explicit version of the Weather Research and Forecasting Chemistry (WRF-chem) model can explicitly calculate the growth and sink of nucleated clusters with 20 aerosol size bins from 1 nm to 10 μm in diameter. In this study, the model was used to investigate spatial and temporal variations in NPF event frequency and the concentrations of aerosols (condensation nuclei, CN) and cloud condensation nuclei (CCN) within the boundary layer in East Asia in spring 2009. We found a distinct north-south contrast in the NPF frequency and mechanism in East Asia. NPF occurred mainly during limited periods over certain regions between 30° and 45°N (northeast China, Korea, and Japan, including regions around the active volcanoes Miyakejima and Sakurajima). In these latitudes, NPF was suppressed by high concentrations of preexisting particles under stagnant air conditions associated with high-pressure systems, although nucleation occurred more extensively during most of the simulation period. In contrast, south of 30°N, nucleation and NPF were both infrequent because of low SO2 emissions and H2SO4 concentrations. The period-averaged NPF frequency at 30°-45°N was three times that at 20°-30°N. This north-south contrast in NPF frequency was validated by surface measurements in outflow regions of East Asia. The simulated period- and domain-averaged contribution of secondary particles was estimated to be 44% for CN (>10 nm) and 26% for CCN at a supersaturation of 1.0%, though the contribution was highly sensitive to the amount and size distribution of primary aerosol emissions and the rate coefficient of the nucleation parameterization. Key Points Simulation of NPF, CN, and CCN in East Asia using the NPF-explicit WRF-chem Distinct north-south contrast in the frequency and mechanism of NPF in East Asia Estimation of the contribution of primary and secondary particles to CN and CCN ©2013. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63228
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo, Tokyo, Japan; Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, 3173-25, Showa-machi, Kanazawa-ku, Yokohama, Kanagawa, 236-0001, Japan; Research Center for Advanced Science and Technology, University of Tokyo, Tokyo, Japan; National Institute for Environmental Studies, Tsukuba, Japan; Center for Environmental Remote Sensing, Chiba University, Chiba, Japan; School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea; Korea Global Atmospheric Watch Center, Climate Science Bureau, Korea Meteorological Administration, Taean-gun, South Korea; Atmospheric Science and Global Change Division, Pacific Northwest National Laboratory, Richland WA, United States

Recommended Citation:
Matsui H.,Koike M.,Takegawa N.,et al. Spatial and temporal variations of new particle formation in East Asia using an NPF-explicit WRF-chem model: North-south contrast in new particle formation frequency[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(20)
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