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The Influence of Opposing Flow and Its Separation of SBF over Masan on Southeast Coast of the Korea
지효은,이화운,이귀옥,이순환,박순영,전원배 한국대기환경학회 2011 Asian Journal of Atmospheric Environment (AJAE) Vol.5 No.4
A Sea breeze front (SBF) appears clear particularly if there is opposing wind, and the convergence zone along a SBF affects air quality in coastal areas. This study analyzes features of SBF separation in the presence of an opposing flow in the southeastern coastal area of Korea Peninsula. Using a Regional Atmospheric Modeling System (RAMS) numerical simulation and an opposing flow, two types of SBF were observed at Masan coastal area of Korea. In one,the SBF penetrated inland despite of the opposing flow at Jinhae (1100 LST), Wondong (1700 LST),Saenglim (1700 LST), and Miryang (1700 LST). In the other, the SBF remained on the coastline along with Jinhae (1100 LST), Masan (1400 LST), Jinbuk (1400 LST), and Gaecheon (1700 LST), because the inflow of the sea breeze was not sufficient to penetrate inland against the opposing flow. This study shows that SBFs are affected by the formation of an opposing flow, as well as the inflows of a sea breeze and the opposing flow.
한국 남동연안의 냉수대 영향에 의한 해풍순환과 오존농도의 사례 연구
지효은 ( Hyo Eun Ji ),이순환 ( Soon Hwan Lee ),박창현 ( Changhyoun Park ),이화운 ( Hwa Woon Lee ) 한국환경과학회 2014 한국환경과학회지 Vol.23 No.2
This work investigates the relationship between the sea breeze circulation and ozone concentrations during cold water events in the southeastern coastal area of the Korean Peninsula, where coastal upwelling frequently occur. This analysis was performed based on the classification of two categories, such as cold water and non-cold water events, over the period of 2000-2009. The low air temperature (0.5℃), low SST (5℃) and the wind direction(southerly) are the features of the cold water events in the Southeastern coastal area. Moreover, ozone concentrations in the cases of the sea breeze circulation and cold water events were significantly lower (below 30 ppb) than those (70∼100 ppb) in the non-clod water events, because of the low air temperature (10∼20℃) and high wind speed (3∼5 m/s) around the southeastern coastal area.