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Volume 8 Issue 2

Mar.  1991

Article Contents

Numerical Simulation of the Scavenging Rates of Ice Crystals of Various Microphysical Characteristics


doi: 10.1007/BF02658093

  • Numerical models of trajectories of small aerosol spheres relative to oblate spheroids were used to determine ice crystal scavenging efficiencies. The models included the effects of aerodynamic flow about the ice particle, gravity, aerosol particle inertia and drag and electrostatic effects. Two electric configurations of the ice particle were investi-gated in detail. The first applied a net charge to the ice particle, of magnitude equal to the mean thunderstorm charge distribution, while the second applied a charge distribution, with no net charge, to the ice particle to model the electric multipole charge distribution. The results show that growing ice crystals with electric multipoles are better scavengers than single ice crystals with net thunderstorm charges, especially in the Greenfield gap (0.1 to 1.0 μm), and that larger single crystals are better scavengers than smaller single crystals. The results also show that the low density ice crystals are more effective scavengers with net charges than they are with charge distribution.
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    [2] Wang Angsheng, N. Fukuta, 1985: A QUANTITATIVE STUDY ON THE GROWTH LAW OF ICE CRYSTALS, ADVANCES IN ATMOSPHERIC SCIENCES, 2, 45-53.  doi: 10.1007/BF03179736
    [3] Huang Shihong, Qian Changguo, Wang Weimin, Li Ruxiang, 1994: On Mechanisms of Nucleation of Ice Crystals by Aerodynamic Cooling, ADVANCES IN ATMOSPHERIC SCIENCES, 11, 57-64.  doi: 10.1007/BF02656994
    [4] Wang Angsheng, 1987: THE QUANTITATIVE GROWTH LAW OF ICE CRYSTALS AND ITS NEW MODEL, ADVANCES IN ATMOSPHERIC SCIENCES, 4, 414-431.  doi: 10.1007/BF02656742
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    [6] Chen Yuxiang, Ji Liren, Shen Rujin, 1985: THE NUMERICAL EXPERIMENTS ON DYNAMIC FORCING BY THE TIBETAN PLATEAU FOR VARIOUS ZONAL FLOWS, ADVANCES IN ATMOSPHERIC SCIENCES, 2, 189-199.  doi: 10.1007/BF03179751
    [7] ZHAO Lijuan, NIU Shengjie, ZHANG Yu, and XU Feng, 2013: Microphysical characteristics of sea fog over the east coast of Leizhou Peninsula, China, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 1154-1172.  doi: 10.1007/s00376-012-1266-x
    [8] Hyo-Eun JI, Soon-Hwan LEE, Hwa-Woon LEE, 2013: Characteristics of Sea Breeze Front Development with Various Synoptic Conditions and Its Impact on Lower Troposphere Ozone Formation, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 1461-1478.  doi: 10.1007/s00376-013-2256-3
    [9] Lin DENG, Wenhua GAO, Yihong DUAN, Yuqing WANG, 2019: Microphysical Properties of Rainwater in Typhoon Usagi (2013): A Numerical Modeling Study, ADVANCES IN ATMOSPHERIC SCIENCES, 36, 510-526.  doi: 10.1007/s00376-019-8170-6
    [10] Li Chongying, 1985: A NUMERICAL SIMULATION OF TYPHOON GENERATION, ADVANCES IN ATMOSPHERIC SCIENCES, 2, 72-80.  doi: 10.1007/BF03179739
    [11] Xingbao WANG, M. K. YAU, B. NAGARAJAN, Luc FILLION, 2010: The Impact of Assimilating Radar-estimated Rain Rates on Simulation of Precipitation in the 17--18 July 1996 Chicago Floods, ADVANCES IN ATMOSPHERIC SCIENCES, 27, 195-210.  doi: 10.1007/s00376-009-8212-6
    [12] SHEN Xinyong, LIU Jia, Xiaofan LI, 2012: Torrential Rainfall Responses to Ice Microphysical Processes during Pre-Summer Heavy Rainfall over Southern China, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 493-500.  doi: 10.1007/s00376-011-1122-4
    [13] YUE Yanyu, NIU Shengjie, ZHAO Lijuan, ZHANG Yu, XU Feng, 2014: The Influences of Macro- and Microphysical Characteristics of Sea-Fog on Fog-Water Chemical Composition, ADVANCES IN ATMOSPHERIC SCIENCES, 31, 624-636.  doi: 10.1007/s00376-013-3059-2
    [14] Qingwei ZENG, Yun ZHANG, Hengchi LEI, Yanqiong XIE, Taichang GAO, Lifeng ZHANG, Chunming WANG, Yanbin HUANG, 2019: Microphysical Characteristics of Precipitation during Pre-monsoon, Monsoon, and Post-monsoon Periods over the South China Sea, ADVANCES IN ATMOSPHERIC SCIENCES, 36, 1103-1120.  doi: 10.1007/s00376-019-8225-8
    [15] LIU Huizhi, Sang Jianguo, 2011: Numerical Simulation of Roll Vortices in the Convective Boundary Layer, ADVANCES IN ATMOSPHERIC SCIENCES, 28, 477-482.  doi: 10.1007/s00376-010-9229-6
    [16] Chen Panqin, 1985: NUMERICAL SIMULATION FOR THE EFFECTS OF PBL AND THE SURFACE ON POLLUTANT CONCENTRATIONS, ADVANCES IN ATMOSPHERIC SCIENCES, 2, 251-259.  doi: 10.1007/BF03179757
    [17] LIU Xiying, ZHANG Xuehong, YU Yongqiang, YU Rucong, 2004: Mean Climatic Characteristics in High Northern Latitudes in an Ocean-Sea Ice-Atmosphere Coupled Model, ADVANCES IN ATMOSPHERIC SCIENCES, 21, 236-244.  doi: 10.1007/BF02915710
    [18] JIANG Hui, YIN Yan, YANG Lei, YANG Shaozhong, SU Hang, CHEN Kui, 2014: The Characteristics of Atmospheric Ice Nuclei Measured at Different Altitudes in the Huangshan Mountains in Southeast China, ADVANCES IN ATMOSPHERIC SCIENCES, 31, 396-406.  doi: 10.1007/s00376-013-3048-5
    [19] XU Shiming, SONG Mirong, LIU Jiping, WANG Bin, LI Lijuan, HUANG Wenyu, LIU Li, XIA Kun, XUE Wei, PU Ye, DONG Li, SHEN Si, HU Ning, LIU Mimi, and SUN Wenqi, 2013: Simulation of Sea Ice in FGOALS-g2: Climatology and Late 20th Century Changes, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 658-673.  doi: 10.1007/s00376-013-2158-4
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Manuscript History

Manuscript received: 10 March 1991
Manuscript revised: 10 March 1991
通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Numerical Simulation of the Scavenging Rates of Ice Crystals of Various Microphysical Characteristics

  • 1. Atmospheric Sciences Center, Desert Research Institute, University of Nevada System, Reno, Nevada 89506 U. S. A.,Atmospheric Sciences Center, Desert Research Institute, University of Nevada System, Reno, Nevada 89506 U. S. A.

Abstract: Numerical models of trajectories of small aerosol spheres relative to oblate spheroids were used to determine ice crystal scavenging efficiencies. The models included the effects of aerodynamic flow about the ice particle, gravity, aerosol particle inertia and drag and electrostatic effects. Two electric configurations of the ice particle were investi-gated in detail. The first applied a net charge to the ice particle, of magnitude equal to the mean thunderstorm charge distribution, while the second applied a charge distribution, with no net charge, to the ice particle to model the electric multipole charge distribution. The results show that growing ice crystals with electric multipoles are better scavengers than single ice crystals with net thunderstorm charges, especially in the Greenfield gap (0.1 to 1.0 μm), and that larger single crystals are better scavengers than smaller single crystals. The results also show that the low density ice crystals are more effective scavengers with net charges than they are with charge distribution.

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