| 层状云清除气溶胶的数值模拟 |
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| 引用本文： | 刘奇俊,胡志晋,丁国安,苏维瀚.层状云清除气溶胶的数值模拟[J].环境科学学报,1992,12(3):288-296. |
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| 作者姓名： | 刘奇俊 胡志晋 丁国安 苏维瀚 |
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| 作者单位： | 国家气象局气象科学研究院 北京100081
(刘奇俊，胡志晋，丁国安)，中国科学院生态环境研究中心 北京100085(苏维瀚) |
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| 摘 要： | 建立了一个一维层状云系的气溶胶清除模式,模式旨在模拟云发展过程中云、雨水中气溶胶浓度的时空演变规律,研究气溶胶粒子的云内清除和云下清除的相对贡献大小及其湿沉降速率等.模拟结果在一定程度上与实测结果相符.
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| 关 键 词： | 气溶胶 清除 云内雨洗 湿沉降速率 |
| 收稿时间： | 1990/11/19 0:00:00 |
NUMERICAL SIMULATION ON THE AEROSOL SCAVENGING OF STRATIFORM CLOUDS |
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| Liu Qijun,Hu Zhijin,Ding Guoan and Su Weihan.NUMERICAL SIMULATION ON THE AEROSOL SCAVENGING OF STRATIFORM CLOUDS[J].Acta Scientiae Circumstantiae,1992,12(3):288-296. |
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| Authors: | Liu Qijun Hu Zhijin Ding Guoan and Su Weihan |
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| Institution: | Academy of Meteorological Sciences, Beijing, 100081,Academy of Meteorological Sciences, Beijing, 100081,Academy of Meteorological Sciences, Beijing, 100081 and Research Center for Eco-environmental Sciences, Eheaese Academy of Sciences |
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| Abstract: | A one-dimensional time-dependent aerosol scavenging model of stratiform clouds is formulated in term of continuity equations for aerosol particles in the air and in the cloud droplets or raindrops in-cloud as well as below-cloud. The model is used to investigate (i) the temporal and spatial evolution of cloudwa-ter aerosol concentration and rainwater aerosol concentration, (ii) the relative importance of the rainout and washout of aerosol particles and the wet deposition velocity. In order to evaluate the effects of nucleation scavenging, two sensitivity tests with and without nucleation were run. The modelling results indicate that the nucleation scavenging is the most efficient in-cloud aerosol scavenging process. The calculated results from the model are in general in accord with observations. |
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| Keywords: | aerosol scavenging rainout washout wet deposition |
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