지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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This study analyzed atmospheric conditions for the convergent cloud band (Cu-Cb line) in developing stage and its neighbouring convections formed over the East Sea on 1 February 2012, by using synoptic, satellites data, and WRF numerical simulation output of high resolution. In both satellite images and the WRF numerical simulation outputs, the Cu-Cb line that stretched out toward northwest-southeast was shown in the East Sea, and cloud lines of the L mode were aligned in accordance with the prevailing surface wind direction. However, those of the T mode were aligned in the direction of NE-SW, which was nearly perpendicular direction to the surface winds. The directions of the wind shear vectors connecting top winds and bottom winds of the moist layers of the L mode and the T mode were identical with those of the cloud lines of L mode and T mode, respectively. From the WRF simulation convection circulations with a convergence in the lower layer of atmosphere and a divergence above 1.5 km ASL (Above Sea Level) were identified in the Cu-Cb line. A series of small sized vortexes (maximum vortex: 320 × 10<SUP>?5</SUP> s<SUP>?1</SUP>) of meso-γ-scale formed by convergences was found along the Cu-Cb lines, suggesting that Cu-Cb lines, consisting of numerous convective clouds, were closely associated with a series of the small vortexes. There was an absolute unstable layer (∂θ/∂z < 0) between sfc and ~0.3 km ASL, and a stable layer (∂θ/∂z > 0) above ~2 km ASL over the Cu-Cb line and cloud zones. Not only convectively unstable layers (∂θ<SUB>e</SUB>/∂z < 0) but also neutral layers (∂θ<SUB>e</SUB>/∂z ? 0) in the lower atmosphere (sfc~1.5 km ASL) were scattered around over the cloud zones. Particularly, for the Cu-Cb line there were convectively unstable layers in the surface layer, and neutral layers (∂θ<SUB>e</SUB>/∂z ? 0) between 0.2 and ~1.5 km ASL over near the center of the Cu-Cb line, and the neutralization of unstable layers came from the release of convective instability.
목차
Abstract
1. 서론
2. 자료 및 방법
3. WRF 수치모델 설정
4. 사례에 대한 종관 및 비종관 분석
5. 수치모의 결과 분석
6. 요약 및 결론
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UCI(KEPA) : I410-ECN-0101-2015-450-001357321