CAJ | 학술논문

利用ARPS模式对2007年3月3-4日河南一次大范围强降水过程进行了数值模拟,并在此基础上,分析了该暴雨过程的天气形势和水汽条件,计算了暴雨发生过程中选定区域内水汽输送、水汽收支和空中各相态水物质的量值大小及其转化关系。结果表明：这次强降水主要是受850 hPa西南涡和地面江淮气旋影响;水汽来自孟加拉湾和南海;计算区域上空的水汽收支、中低层水汽的垂直输送与地面雨强的变化有很好的对应关系,中、低层持续的较强西南暖湿气流水汽输送和明显的水汽辐合是导致河南这次强降水的重要条件。数值模拟结果显示,降水发展不同时段,云内微观结构、各种湿物质之间的转化关系和雨水形成机制都存在明显差异。
이용ARPS모식대2007년3월3-4일하남일차대범위강강수과정진행료수치모의,병재차기출상,분석료해폭우과정적천기형세화수기조건,계산료폭우발생과정중선정구역내수기수송、수기수지화공중각상태수물질적량치대소급기전화관계。결과표명：저차강강수주요시수850 hPa서남와화지면강회기선영향;수기래자맹가랍만화남해;계산구역상공적수기수지、중저층수기적수직수송여지면우강적변화유흔호적대응관계,중、저층지속적교강서남난습기류수기수송화명현적수기복합시도치하남저차강강수적중요조건。수치모의결과현시,강수발전불동시단,운내미관결구、각충습물질지간적전화관계화우수형성궤제도존재명현차이。
A wide range heavy rainfall process on 3-4 March 2007 in Henan province was simulated by ARPS numerical model.On the basis of accurate simulation results,the weather situation and vapor conditions was analyzed.At the same time,the author calculated water vapor transportation,water vapor budget,the concentration and transformation of each phase water during the rainfall process.The results indicated that Southwest Vortex at 850 hPa and surface Jianghuai cyclone were the main influence system.The vapor comes from Bengal Bay and South China Sea.The water vapor budget,the vertical transportation of vapor on middle and low levels correspond well with rainfall intensity.The sustained strong transportation of southwest warm wet air and the significant convergence were important condition caused this heavy rainfall process.The numerical simulation indicated the microstructure in cloud,transformation of each phase water and formation mechanisms of rain in different periods were of significant differences.