DOI: 10.1029/2012JD017947
论文题名: Changes in the variability of the North Pacific sea surface temperature caused by direct sulfate aerosol forcing in China in a coupled general circulation model
作者: Yeh S.-W. ; Kim W.-M. ; Kim Y.H. ; Moon B.-K. ; Park R.J. ; Song C.-K.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 3 起始页码: 1261
结束页码: 1270
语种: 英语
英文关键词: China
; Pacific Decadal Oscillation
; sulfate aerosols
Scopus关键词: Aerosols
; Atmospheric temperature
; Climatology
; Ocean currents
; Atmospheric circulation
; China
; Coupled general circulation models
; Long term simulation
; Pacific decadal oscillation
; Sea surface temperature (SST)
; Sulfate aerosols
; Temperature structure
; Sulfur compounds
; aerosol
; climate effect
; concentration (composition)
; general circulation model
; sea surface temperature
; seasonal variation
; simulation
; sulfate
; temporal analysis
; timescale
; China
; Pacific Ocean
; Pacific Ocean (North)
英文摘要: We examine the direct effect of anthropogenic sulfate aerosol from China on the sea surface temperature (SST) variability in the North Pacific, especially focusing on the Pacific Decadal Oscillation (PDO) using a coupled general circulation model (CGCM). We conduct two long-term simulations, i.e., the Exp-Asia and the Exp-Asia-2x. Anthropogenic sulfate aerosols are prescribed in China only in the Exp-Asia. The conditions for the Exp-Asia-2x simulation are the same as in the Exp-Asia simulation, except the concentration of the anthropogenic sulfate aerosols in China is two times higher than that of the Exp-Asia simulation. It is found that the spatial structure of the PDO changes slightly despite an increase in the anthropogenic sulfate aerosol in China. In contrast, the temporal structure of the PDO is significantly altered between the two simulations. The variance in the PDO index in the boreal winter (December-January-February) and spring (March-April-May) is enhanced for the Exp-Asia-2x on low-frequency timescales (>10 years) compared to that of the Exp-Asia simulation. Upon further analysis, the results of our study indicate that the change in the PDO index from the Exp-Asia to the Exp-Asia-2x is associated with the change in the mean SST in the Kuroshio-Oyashio Extension (KOE) region through the modification of atmospheric circulation. The change in SST in the KOE region is primarily associated with a wave-like temperature structure forced by the diabatic cooling in the low-level atmosphere in China through the modification of atmospheric circulation, which is caused by an increase in the anthropogenic sulfate aerosols. Therefore, it is possible for the temporal structure of the North Pacific SST variability (i.e., PDO) to be altered through the mean SST change in the North Pacific Ocean caused by an increase in regional sulfate aerosols in China. © 2012. American Geophysical Union. All Rights Reserved. 资助项目: NRF-2009-C1AAA001-2009-0093042
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63954
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 Marine Sciences and Convergent Technology, Hanyang University, ERICA, South Korea; Korea Institute of Ocean Science and Technology, Ansan, South Korea; Division of Science Education, Institute of Fusion Science, Chonbuk National University, Jeonju, South Korea; School of Earth and Environment Sciences, Seoul National University, Seoul, South Korea; Global Environment Research Center, National Institute of Environmental Research, Incheon, South Korea
Recommended Citation:
Yeh S.-W.,Kim W.-M.,Kim Y.H.,et al. Changes in the variability of the North Pacific sea surface temperature caused by direct sulfate aerosol forcing in China in a coupled general circulation model[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(3)