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DOI | 10.1175/JAS-D-18-0080.1 |
A Cloud Microphysics Parameterization for Shallow Cumulus Clouds Based on Lagrangian Cloud Model Simulations | |
Noh, Yign1; Oh, Donggun1; Hoffmann, Fabian2,3,4; Raasch, Siegfried2 | |
2018-11-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES
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ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2018 |
卷号 | 75期号:11页码:4031-4047 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea; Germany; USA |
英文摘要 | Cloud microphysics parameterizations for shallow cumulus clouds are analyzed based on Lagrangian cloud model (LCM) data, focusing on autoconversion and accretion. The autoconversion and accretion rates, A and C, respectively, are calculated directly by capturing the moment of the conversion of individual Lagrangian droplets from cloud droplets to raindrops, and it results in the reproduction of the formulas of A and C for the first time. Comparison with various parameterizations reveals the closest agreement with Tripoli and Cotton, such as A = alpha N(c)(-1/3)q(c)(7/3) H(R - R-T) and C = beta q(c)q(r), where q(c) and N-c are the mixing ratio and the number concentration of cloud droplets, q(r) is the mixing ratio of raindrops, R-T is the threshold volume radius, andHis the Heaviside function. Furthermore, it is found that a increases linearly with the dissipation rate epsilon and the standard deviation of radius sigma and that R-T decreases rapidly with sigma while disappearing at sigma > 3.5 mu m. The LCMalso reveals that sigma and epsilon increase with time during the period of autoconversion, which helps to suppress the early precipitation by reducing A with smaller alpha and larger R-T in the initial stage. Finally, beta is found to be affected by the accumulated collisional growth, which determines the drop size distribution. |
英文关键词 | Turbulence Cloud microphysics Cloud parameterizations Large eddy simulations |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000448772800002 |
WOS关键词 | RAINDROP SIZE DISTRIBUTIONS ; PART II ; TURBULENCE ; AUTOCONVERSION ; PRECIPITATION ; VARIABILITY ; FORMULATION ; COLLECTION ; CONVECTION ; AEROSOL |
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/29535 |
专题 | 地球科学 |
作者单位 | 1.Yonsei Univ, Dept Atmospher Sci, Seoul, South Korea; 2.Leibniz Univ Hannover, Inst Meteorol & Climatol, Hannover, Germany; 3.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA; 4.NOAA, Earth Syst Res Lab, Chem Sci Div, Boulder, CO USA |
推荐引用方式 GB/T 7714 | Noh, Yign,Oh, Donggun,Hoffmann, Fabian,et al. A Cloud Microphysics Parameterization for Shallow Cumulus Clouds Based on Lagrangian Cloud Model Simulations[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2018,75(11):4031-4047. |
APA | Noh, Yign,Oh, Donggun,Hoffmann, Fabian,&Raasch, Siegfried.(2018).A Cloud Microphysics Parameterization for Shallow Cumulus Clouds Based on Lagrangian Cloud Model Simulations.JOURNAL OF THE ATMOSPHERIC SCIENCES,75(11),4031-4047. |
MLA | Noh, Yign,et al."A Cloud Microphysics Parameterization for Shallow Cumulus Clouds Based on Lagrangian Cloud Model Simulations".JOURNAL OF THE ATMOSPHERIC SCIENCES 75.11(2018):4031-4047. |
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