CAJ | 학술논문

应用MM5模式对2000年7月5日河北省中南部的暴雨个例进行数值模拟及诊断分析,探讨了太行山脉对于河北省暴雨的影响.结果表明:降水分布在太行山东部迎风坡上,且强降水中心与喇叭口地形相对应,地形雨特征明显.在高分辨率模式模拟中,地形资料越精细,对迎风坡地形暴雨特征模拟能力越好.本次个例中低层东风越大,造成的迎风坡降水越强.近地面层受地形影响,气流表现为局地环流特征,随山脉的起伏,各物理场均有波动的特征.
응용MM5모식대2000년7월5일하북성중남부적폭우개례진행수치모의급진단분석,탐토료태행산맥대우하북성폭우적영향.결과표명:강수분포재태행산동부영풍파상,차강강수중심여나팔구지형상대응,지형우특정명현.재고분변솔모식모의중,지형자료월정세,대영풍파지형폭우특정모의능력월호.본차개례중저층동풍월대,조성적영풍파강수월강.근지면층수지형영향,기류표현위국지배류특정,수산맥적기복,각물리장균유파동적특정.
The numerical simulations using MM5 model and diagnostic analysis are conducted for a heavy rainstorm event occurred on July 5-6, 2000 in Hebei province. The impacts of Taihang mountain on rainfall in Hebei province are discussed. The results show that the rainfall occurs at the eastern upwind direction of the Taihang mountain with obvious character of topography-induced heavy rainfall. The rainfall centers are consistent with the bell-mouthed topography. The finer terrain in the high resolving simulation is, the better the topography-induced heavy rainfall model forecast will be, the bigger the low-level eastern wind, and the more obvious precipitaion on upwind direction of the Taihang mountain. The flow shows local circumfluence character and all of the physical factors present wavy character along the terrain.