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http://dx.doi.org/10.5322/JES.2003.12.4.393

The Characteristics of the Dry Deposition Velocity for O3 regarding Surface Wetness  

이화운 (부산대학교 대기과학과)
김유근 (부산대학교 대기과학과)
문난경 (부산대학교 대기과학과)
Publication Information
Journal of Environmental Science International / v.12, no.4, 2003 , pp. 393-397 More about this Journal
Abstract
It has been researched the relationship between deposition velocity and factors which could affect the deposition phenomena and deposition velocity also has been estimated fer several land-use types. The typical deposition velocities are complex functions of surface types, atmospheric stabilities, friction velocities, air pollutants and so on. The canopy resistance is major contribution to the model's total resistance for O₃. Canopy wetness is also an important factor to calculate deposition velocity. We considered the canopy wetness as canopy water content(CWC) in our Model. But, it is not easy to observe CWC over each land-use types. In this study, we use CWC observed by EMEFS(CANADA Environment Service, 1988) to examine the influence of CWC in estimation of 03 dry deposition velocity(V/sub d/) in summertime. The value of O₃ V/sub d/ range 0.2 ∼ 0.7 cm s/sup -1/ on dry surface and 0.01 ∼ 0.35 cm s/sup -1/ on wet surface in daytime.
Keywords
CWC; Canopy wetness; Dry deposition velocity; O$_3$;
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