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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.
해안지형의 복잡성에 따른 해풍침투 변화가 대기경계층에 미치는 영향 분석
박순영 ( Soon Young Park ),이화운 ( Hwa Woon Lee ),이순환 ( Soon Hwan Lee ),이귀옥 ( Kwi Ok Lee ),지효은 ( Hyo Eun Ji ) 한국환경과학회 2011 한국환경과학회지 Vol.20 No.2
In order to clarify the relation between sea breeze penetration and Planetary Boundary Layer development in southeastern part of the Korean Peninsula, several numerical assessments were carried out using atmospheric numerical model WRF(Weather Research and Forecasting). Compared with onset time of sea breeze at eastern coast area(Uljin), the time at southern coast region(Masan) with complex costal line tend to delay for several hours. The penetration patterns of sea breeze between two coastal regions are some different due to the shape of their coastal line and back ground topography. Intensified valley wind due to high topography of lee side of Uljin can help penetration of sea breeze at early time. So penetration of sea breeze at early time often prevent PBL to develop at Uljin and lower PBL height last for a day time. But because of late penetration of sea breeze at Masna, PBL Height dramatically decrease after 1500LST. The distribution of front genesis function based on the heat and momentum variation are explained obviously the sea breeze penetration patterns and agreed well with the PBL height distribution.