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DOI	10.1016/j.atmosres.2016.05.003
	Investigation of mineral aerosols radiative effects over High Mountain Asia in 1990-2009 using a regional climate model
	Ji, Zhenming; Kang, Shichang; Zhang, Qianggong; Cong, Zhiyuan; Chen, Pengfei; Sillanpaa, Mika
发表日期	2016
ISSN	0169-8095
EISSN	1873-2895
卷号	178
英文摘要	Mineral aerosols scatter and absorb incident solar radiation in the atmosphere, and play an important role in the regional climate of High Mountain Asia (the domain includes the Himalayas, Tibetan Plateau, Pamir, Hindu-kush, Karakorum and Tienshan Mountains). Dust deposition on snow/ice can also change the surface albedo, resulting in perturbations in the surface radiation balance. However, most studies that have made quantitative assessments of the climatic effect of mineral aerosols over the High Mountain Asia region did not consider the impact of dust on snow/ice at the surface. In this study, a regional climate model coupled with an aerosol-snow/ice feedback module was used to investigate the emission, distribution, and deposition of dust and the climatic effects of aerosols over High Mountain Asia. Two sets of simulations driven by a reanalysis boundary condition were performed, i.e., with and without dust-climate feedback. Results indicated that the model captured the spatial and temporal features of the climatology and aerosol optical depth (ADD). High dust emission fluxes were simulated in the interior of the Tibetan Plateau (TP) and the Yarlung Tsangpo Valley in March-April-May (MAM), with a decreasing trend during 1990-2009. Dry deposition was controlled by the topography, and its spatial and seasonal features agreed well with the dust emission fluxes. The maximum wet deposition occurred in the western (southern and central) TP in MAM (JJA). A positive surface radiative forcing was induced by dust, including aerosol-snow/ice feedback, resulting in 2-m temperature increases of 0.1-0.5 degrees C over the western TP and Kunlun Mountains in MAM. Mineral dust also caused a decrease of 5-25 mm in the snow water equivalent (SWE) over the western TP, Himalayas, and Pamir Mountains in DJF and MAM. The long-term regional mean radiative forcing via dust deposition on snow showed an rising trend during 1990-2009, which suggested the contribution of aerosols surface radiative effects induced by snow darkening was increased since 1990. (C) 2016 Elsevier B.V. All rights reserved.
关键词	Mineral aerosols High Mountain Asia Climatic effects Aerosol snow/ice feedback Regional climate model
学科领域	Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
来源期刊	ATMOSPHERIC RESEARCH
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111833
作者单位	Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Ji, Zhenming,Kang, Shichang,Zhang, Qianggong,et al. Investigation of mineral aerosols radiative effects over High Mountain Asia in 1990-2009 using a regional climate model[J]. 中国科学院西北生态环境资源研究院,2016,178.
APA	Ji, Zhenming,Kang, Shichang,Zhang, Qianggong,Cong, Zhiyuan,Chen, Pengfei,&Sillanpaa, Mika.(2016).Investigation of mineral aerosols radiative effects over High Mountain Asia in 1990-2009 using a regional climate model.ATMOSPHERIC RESEARCH,178.
MLA	Ji, Zhenming,et al."Investigation of mineral aerosols radiative effects over High Mountain Asia in 1990-2009 using a regional climate model".ATMOSPHERIC RESEARCH 178(2016).