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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 | 16807316 |
| 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. |
| 关键词 | aerosolatmospheric chemistryatmospheric convectionbiomass burningconcentration (composition)diurnal variationprecipitation (climatology)precipitation intensityBorneoGreater Sunda IslandsSumatraSunda Isles |
| 语种 | 英语 |
| 来源机构 | Atmospheric Chemistry and Physics |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/132201 |
| 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]. Atmospheric Chemistry and Physics,2020,20(4). |
| APA | Lee H.-H.,&Wang C..(2020).The impacts of biomass burning activities on convective systems over the Maritime Continent.,20(4). |
| MLA | Lee H.-H.,et al."The impacts of biomass burning activities on convective systems over the Maritime Continent".20.4(2020). |
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