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DOI | 10.5194/acp-18-2431-2018 |
A simple model for the time evolution of the condensation sink in the atmosphere for intermediate Knudsen numbers | |
Ezhova, Ekaterina1; Kerminen, Veli-Matti1; Lehtinen, Kari E. J.2; Kulmala, Markku1 | |
2018-02-19 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:4页码:2431-2442 |
文章类型 | Article |
语种 | 英语 |
国家 | Finland |
英文摘要 | Transformation of the mass flux towards the particle from the kinetic regime to the continuum regime is often described by the Fuchs-Sutugin coefficient. Kinetic regime can be obtained as a limiting case when only one term of the expansion of the Fuchs-Sutugin coefficient at small 1/Kn is considered. Here we take the two first terms into account, and get a mass flux which agrees well with the full mass flux down to Kn similar to 0.5. This procedure allows an analytical solution of the condensation equation valid for the range of intermediate Knudsen numbers to be obtained. The expansion is further applied to analytically calculate the condensation sink. The formula for the condensation sink is tested against field observations. The relative contribution of different aerosol modes to the condensation sink is discussed. Furthermore, we present a simple model describing the coupled dynamics of the condensing vapour and the condensation sink. The model gives reasonable predictions of condensation sink dynamics during the periods of the aerosol modes' growth by condensation in the atmosphere. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425505500005 |
WOS关键词 | BOREAL FOREST SITE ; PARTICLE FORMATION ; CLIMATE MODEL ; GROWTH-RATES ; LONG-TERM ; SMEAR-II ; AEROSOL ; SIZE ; HYYTIALA ; FINLAND |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/24972 |
专题 | 地球科学 |
作者单位 | 1.Univ Helsinki, P Box 64, FIN-00014 Helsinki, Finland; 2.Univ Eastern Finland, Dept Appl Phys, POB 1627, Kuopio 70211, Finland |
推荐引用方式 GB/T 7714 | Ezhova, Ekaterina,Kerminen, Veli-Matti,Lehtinen, Kari E. J.,et al. A simple model for the time evolution of the condensation sink in the atmosphere for intermediate Knudsen numbers[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(4):2431-2442. |
APA | Ezhova, Ekaterina,Kerminen, Veli-Matti,Lehtinen, Kari E. J.,&Kulmala, Markku.(2018).A simple model for the time evolution of the condensation sink in the atmosphere for intermediate Knudsen numbers.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(4),2431-2442. |
MLA | Ezhova, Ekaterina,et al."A simple model for the time evolution of the condensation sink in the atmosphere for intermediate Knudsen numbers".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.4(2018):2431-2442. |
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