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DOI | 10.1002/2016JD025904 |
Examination of an improved quasi-stochastic model for the collisional growth of drops | |
Lkhamjav, Jambajamts; Lee, Hyunho; Jeon, Ye-Lim; Baik, Jong-Jin | |
2017-02-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea |
英文摘要 | The evolution of cloud drop size distribution due to the collision-coalescence process is generally described by a quasi-stochastic model that solves the stochastic collection equation in a deterministic way. In this study, an improved quasi-stochastic (IQS) model, which is derived by rigorously considering a finite model time step, is examined in the context of comparison with the normal quasi-stochastic (NQS) model. The IQS model allows a large collector drop to collide with a small collected drop more than one time in a model time step even if the collision probability is small. The number distribution of collector drops then follows the Poisson distribution with respect to the number of collisions. Using a box model that takes turbulence-induced collision enhancement into account, it is found that large drops in the IQS model tend to have larger sizes than those in the NQS model and that the IQS model accelerates large-drop formation by a few minutes compared to the NQS model. The effects of the IQS model depend on the model time step and the shape of initial drop size distribution. The IQS model is incorporated into a detailed bin microphysics scheme that is coupled with the Weather Research and Forecasting model, and a single warm cloud is simulated under idealized environmental conditions. It is found that the onset of surface precipitation is accelerated in the IQS model. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000396119200019 |
WOS关键词 | NUMERICAL-SOLUTION ; CLOUD DROPLETS ; WARM-RAIN ; COLLECTION EQUATION ; FLUX METHOD ; COALESCENCE ; EVOLUTION ; PRECIPITATION ; TURBULENCE ; SPECTRA |
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/32730 |
专题 | 气候变化 |
作者单位 | Seoul Natl Univ, Sch Earth & Environm Sci, Seoul, South Korea |
推荐引用方式 GB/T 7714 | Lkhamjav, Jambajamts,Lee, Hyunho,Jeon, Ye-Lim,et al. Examination of an improved quasi-stochastic model for the collisional growth of drops[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(3). |
APA | Lkhamjav, Jambajamts,Lee, Hyunho,Jeon, Ye-Lim,&Baik, Jong-Jin.(2017).Examination of an improved quasi-stochastic model for the collisional growth of drops.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(3). |
MLA | Lkhamjav, Jambajamts,et al."Examination of an improved quasi-stochastic model for the collisional growth of drops".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.3(2017). |
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