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DOI | 10.1175/JAS-D-19-0125.1 |
Multimoment Ice Bulk Microphysics Scheme with Consideration for Particle Shape and Apparent Density. Part I: Methodology and Idealized Simulation | |
Tsai, Tzu-Chin1; Chen, Jen-Ping1,2 | |
2020-05-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2020 |
卷号 | 77期号:5页码:1821-1850 |
文章类型 | Article |
语种 | 英语 |
国家 | Taiwan |
英文摘要 | To improve the parameterization of ice-phase microphysics in regional meteorological models, this study developed a triple-moment bulk scheme, which also tracks the variations in the shape and density of several hydrometeors. Solid-phase hydrometeors are classified into pristine ice, snow aggregates, rimed ice, and hailstones based on their physical mechanisms. The new scheme has been incorporated into the Weather Research and Forecasting Model and tested with an idealized two-dimensional simulation of a squall-line system. The simulation successfully revealed the smooth transition from the convective core to the stratiform anvil as well as the alternating pattern in the hydrometeor vertical distributions, as was similarly demonstrated in other similar studies. A few sensitivity tests were performed to reveal the importance of including shape and density variations, which strongly affect the mean particle size by up to 50% and fall speed by as much as 100% for individual hydrometeor categories. Furthermore, the inclusion of a third moment could enhance the diffusional growth rate of small crystals and reduce the ventilation effect of large particles compared with the conventional double-moment approach. These factors have a significant influence on cloud structure and precipitation amounts. |
英文关键词 | Cloud microphysics Convective storms Ice particles Cloud parameterizations Cloud resolving models |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000535703800016 |
WOS关键词 | GENERAL HYDRODYNAMIC THEORY ; ADAPTIVE HABIT PREDICTION ; MIXED-PHASE CLOUDS ; CONVECTIVE STORMS ; SQUALL LINE ; SNOWFLAKE AGGREGATION ; TERMINAL VELOCITIES ; EXPLICIT FORECASTS ; CONICAL GRAUPEL ; ASPECT RATIO |
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/280345 |
专题 | 地球科学 |
作者单位 | 1.Natl Taiwan Univ, Dept Atmospher Sci, Taipei, Taiwan; 2.Natl Taiwan Univ, Int Degree Program Climate Change & Sustainable D, Taipei, Taiwan |
推荐引用方式 GB/T 7714 | Tsai, Tzu-Chin,Chen, Jen-Ping. Multimoment Ice Bulk Microphysics Scheme with Consideration for Particle Shape and Apparent Density. Part I: Methodology and Idealized Simulation[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2020,77(5):1821-1850. |
APA | Tsai, Tzu-Chin,&Chen, Jen-Ping.(2020).Multimoment Ice Bulk Microphysics Scheme with Consideration for Particle Shape and Apparent Density. Part I: Methodology and Idealized Simulation.JOURNAL OF THE ATMOSPHERIC SCIENCES,77(5),1821-1850. |
MLA | Tsai, Tzu-Chin,et al."Multimoment Ice Bulk Microphysics Scheme with Consideration for Particle Shape and Apparent Density. Part I: Methodology and Idealized Simulation".JOURNAL OF THE ATMOSPHERIC SCIENCES 77.5(2020):1821-1850. |
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