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http://dx.doi.org/10.5467/JKESS.2017.38.6.395

The Influence of Evaporation from a Stream on Fog Events in the Middle Nakdong River  

Park, Jun Sang (Applied Meteorology Research Division, National Institute of Meteorological Sciences)
Kim, Kyu Rang (Applied Meteorology Research Division, National Institute of Meteorological Sciences)
Kang, Misun (Applied Meteorology Research Division, National Institute of Meteorological Sciences)
Kim, Baek-Jo (Applied Meteorology Research Division, National Institute of Meteorological Sciences)
Publication Information
Journal of the Korean earth science society / v.38, no.6, 2017 , pp. 395-404 More about this Journal
Abstract
In this study, we classified observed fog events in the Middle Nakdong River near Gumi and analyzed the meteorological characteristics before and after the fog formation. The observation was performed from 2013 to 2015 using visibility meter. A total of 74 fog events were observed and most of them were classified as steam fog. The duration of observed steam fogs was longer than that of typical inland fogs because the nocturnal evaporation from the water surface was enhanced by the topographical characteristics. In order to analyze the effect of evaporation from the stream on the fog duration, the evaporation was estimated using the Penman-Monteith and the Bulk aerodynamic methods. The estimated evaporation by the Bulk method was similar to the actual evaporation from the water surface. Therefore, the Bulk method is suitable for estimating the evaporation from water surface. The evaporation amount, estimated by using the Bulk method was higher on fog days than non-fog days at 06 LST and 07 LST. The added evaporation of fog days released latent heat to the atmosphere and provided energy to maintain the turbulence in the fog. This phenomenon was confirmed by the increase of wind speed, temperature and turbulent kinetic energy within the fog.
Keywords
fog; evaporation; Penman-Monteith; Bulk aerodynamic; turbulent kinetic energy;
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Times Cited By KSCI : 7  (Citation Analysis)
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