GSTDTAP  > 地球科学
DOI10.5194/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
ISSN1680-7316
EISSN1680-7324
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
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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
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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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