Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD027521 |
Impact of Biomass Burning Aerosols on the Diurnal Cycle of Convective Clouds and Precipitation Over a Tropical Island | |
Hodzic, Alma1; Duvel, Jean Philippe2 | |
2018-01-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:2页码:1017-1036 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; France |
英文摘要 | A coupled weather-aerosol model is used to study the effect of biomass burning aerosols on deep convection over the Borneo Island and surrounding oceans. Simulations are performed at the convection-permitting scale (4km) for 40days during the boreal summer and include interactive fire emissions and the aerosol effect on radiative and microphysical processes. Intense burning occurs daily in the southern part of the island, and smoke propagates northward to regions of deep convection. The model captures well the observed diurnal cycle of precipitation and high cloud cover. Cloud microphysics and radiative aerosol impacts are considered separately. Modifications of the cloud microphysics by smoke aerosols reinforce deep convection near the central Borneo mountainous region. This reinforced convection is due to reduced shallow precipitation in the afternoon that leads to a warm planetary boundary layer anomaly at sunset enhancing deep convection at night. Aerosol absorptive properties strongly affect local and synoptic atmospheric responses. The radiative processes of moderately absorbing aerosols tend to reduce deep convection over most regions due to local surface cooling and atmosphere warming that increase the static stability. For more absorbing aerosols, however, the impact is reversed with increased nighttime convection over most regions. This is partly related to changes in the vertical water vapor divergence profiles that decrease the convergence toward Borneo for moderately absorbing aerosols and increase it for more absorbing ones. These changes in the synoptic circulation due to large-scale aerosol perturbations are as important as local processes to explain the observed rainfall perturbation patterns. |
英文关键词 | biomass burning aerosols deep convection absorbing aerosols tropical island diurnal cycle convection-permitting grid resolution |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425520200024 |
WOS关键词 | RADIATIVE IMPACT ; EMISSION FACTORS ; SMOKE TRANSPORT ; ENERGY BUDGET ; PARAMETERIZATION ; FIRES ; MODEL ; MICROPHYSICS ; POLLUTION ; CLIMATE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/33778 |
专题 | 气候变化 |
作者单位 | 1.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 2.CNRS, LMD, Paris, France |
推荐引用方式 GB/T 7714 | Hodzic, Alma,Duvel, Jean Philippe. Impact of Biomass Burning Aerosols on the Diurnal Cycle of Convective Clouds and Precipitation Over a Tropical Island[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(2):1017-1036. |
APA | Hodzic, Alma,&Duvel, Jean Philippe.(2018).Impact of Biomass Burning Aerosols on the Diurnal Cycle of Convective Clouds and Precipitation Over a Tropical Island.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(2),1017-1036. |
MLA | Hodzic, Alma,et al."Impact of Biomass Burning Aerosols on the Diurnal Cycle of Convective Clouds and Precipitation Over a Tropical Island".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.2(2018):1017-1036. |
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