CAJ | 학술논문

采用高分辨率TRMM、AIRS卫星实测资料,从气候态的降水微物理过程角度分析了亚洲夏季风期间中尺度山脉对不同性质降水垂直结构和水平分布的影响.研究表明,中尺度山脉迎风、背风坡均以层云降水为主,层云降水强度在迎风坡强于背风坡;对流降水在迎风坡主要为浅对流,背风坡主要为深对流,对流降水强度在背风坡强于迎风坡.沿两南季风推进方向依次经过的中尺度山脉,其两侧发生降水像素个数、降水微物理特征等差异逐渐减小,其中,对流降水迎风坡向背风坡转变明显,而层云降水背风坡向迎风坡转变明显.大气稳定度与对流降水在迎风、背风坡的分布相一致.另外,对中尺度地形降水的研究为区域气候模式模拟高精度地形降水分布提供了实测依据.
채용고분변솔TRMM、AIRS위성실측자료,종기후태적강수미물리과정각도분석료아주하계풍기간중척도산맥대불동성질강수수직결구화수평분포적영향.연구표명,중척도산맥영풍、배풍파균이층운강수위주,층운강수강도재영풍파강우배풍파;대류강수재영풍파주요위천대류,배풍파주요위심대류,대류강수강도재배풍파강우영풍파.연량남계풍추진방향의차경과적중척도산맥,기량측발생강수상소개수、강수미물리특정등차이축점감소,기중,대류강수영풍파향배풍파전변명현,이층운강수배풍파향영풍파전변명현.대기은정도여대류강수재영풍、배풍파적분포상일치.령외,대중척도지형강수적연구위구역기후모식모의고정도지형강수분포제공료실측의거.
High-resolution satellite observation data TRMM and AIRS are used to analyze the effect of mesoscale mountains on vertical structure and horizontal distribution of different types of rainfall during the Asian summer monsoon region from the perspective of climatological rainfall microphysical processes.It was found that the stratiform precipitation is the predominant rainfall type on both the windward and leeward sides of mesoscale mountains,and the rainfall on the windward side is stronger than that on the other side.In the meanwhile,the convective precipitation is mainly shallow convective precipitation on the windward side and deep convective precipitation on the leeward side,and the leeward rainfall is stronger.The results also demonstrate that along the direction followed by the southwest monsoon,the discrepancies of rainfall pixel numbers and microphysical processes between both the sides of mesoscale mountains reduce gradually.During the whole process,the convective precipitation changes from the windward side to the leeward side distincty,the stratiform precipitation is just the opposite.Also,atmospheric stability corresponds well to the convective precipitation on both the sides.In addition,this research on mesoscale orographic precipitation can provide a robust basis for the simulation of high-resolution terrain rainfall in regional climate models.