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DOI	10.5194/acp-20-2533-2020
	The impacts of biomass burning activities on convective systems over the Maritime Continent
	Lee H.-H.; Wang C.
发表日期	2020
ISSN	1680-7316
起始页码	2533
结束页码	2548
卷号	20 期号:4
英文摘要	Convective precipitation associated with Sumatra squall lines and diurnal rainfall over Borneo is an important weather feature of the Maritime Continent in Southeast Asia. Over the past few decades, biomass burning activities have been widespread during summertime over this region, producing massive fire aerosols. These additional aerosols, when brought into the atmosphere, besides influencing the local radiation budget through directly scattering and absorbing sunlight, can also act as cloud condensation nuclei or ice nuclei to alter convective clouds and precipitation over the Maritime Continent via so-called aerosol indirect effects. Based on 4-month simulations with or without biomass burning aerosols, conducted using the Weather Research and Forecasting model coupled with a chemistry module (WRF-Chem), we have investigated the aerosol-cloud interactions associated with biomass burning aerosols over the Maritime Continent. Results from selected cases of convective events have specifically shown the significant impact of fire aerosols on weak convections by their increasing of the quantities of hydrometeors and rainfall in both the Sumatra and Borneo regions. Statistical analysis over the fire season also suggests that fire aerosols have impacts on the nocturnal convections associated with the local anticyclonic circulation in western Borneo and weaken nocturnal rainfall intensity by about 9 %. Such an effect is likely to have come from the near-surface heating due to absorbing aerosols emitted from fires, which could weaken land breezes and thus the convergence of anticyclonic circulation. © Author(s) 2020.
语种	英语
scopus关键词	aerosol; atmospheric chemistry; atmospheric convection; biomass burning; concentration (composition); diurnal variation; precipitation (climatology); precipitation intensity; Borneo; Greater Sunda Islands; Sumatra; Sunda Isles
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247948
作者单位	Center for Environmental Sensing and Modeling, Singapore-MIT Alliance for Research and Technology, Singapore; Center for Global Change Science, Massachusetts Institute of Technology, Cambridge, MA, United States; Atmospheric, Earth, and Energy Division, Lawrence Livermore National Laboratory, Livermore, CA, United States; Laboratoire d'Aerologie, CNRS, University of Toulouse, Toulouse, France
推荐引用方式 GB/T 7714	Lee H.-H.,Wang C.. The impacts of biomass burning activities on convective systems over the Maritime Continent[J],2020,20(4).
APA	Lee H.-H.,&Wang C..(2020).The impacts of biomass burning activities on convective systems over the Maritime Continent.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(4).
MLA	Lee H.-H.,et al."The impacts of biomass burning activities on convective systems over the Maritime Continent".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.4(2020).