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学科主题: 地理学::自然地理学
题名: Investigation of mineral aerosols radiative effects over High Mountain Asia in 1990-2009 using a regional climate model
作者: Ji, ZM (Ji, Zhenming)1; Kang, SC (Kang, Shichang)2, 3; Zhang, QG (Zhang, Qianggong)1, 3; Cong, ZY (Cong, Zhiyuan)1, 3; Chen, PF (Chen, Pengfei)2; Sillanpaa, M (Sillanpaa, Mika)4
通讯作者: Ji, ZM
关键词: HIGH-ALTITUDE SITE ; TIBETAN PLATEAU ; SNOW COVER ; CARBONACEOUS AEROSOLS ; SPATIAL-PATTERNS ; RCP SCENARIOS ; BLACK-CARBON ; DUST ; GLACIERS ; CHINA
刊名: ATMOSPHERIC RESEARCH
发表日期: 2016
DOI: 10.1016/j.atmosres.2016.05.003
卷: 178, 期:0, 页:484-496
收录类别: SCI
合作性质: 国际
文章类型: Article
部门归属: 环境
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.
语种: 英语
WOS记录号: WOS:000378360700041
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7619
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China
2.Chinese Acad Sci, State Key Lab Cryospher Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
4.Lappeenranta Univ Technol, Lab Green Chem, Sammonkatu 12, FI-50130 Mikkeli, Finland

Recommended Citation:
Ji, ZM ,Kang, SC ,Zhang, QG ,et al. Investigation of mineral aerosols radiative effects over High Mountain Asia in 1990-2009 using a regional climate model[J]. ATMOSPHERIC RESEARCH,2016,178(0):484-496.
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