CAJ | 학술논문

以2005年7月上旬江淮流域的一次梅雨锋暴雨为研究对象,选取WRF模式中Lin和Ferrier两个微物理方案和KF、NKF、Betts-Miller-Janjic三个积云参数化方案,经过组合得到6组方案,进行两重网格嵌套模拟,对数值模拟结果进行分析比较。通过分析得出如下结论：6个方案均能模拟出降水雨带的走向、降水中心,其中Ferri-er和NKF方案及Ferrier和Betts-Miller-Janjic方案模拟的降水强度和分布与实况最接近;在模拟降水量时采用微物理方案Ferrier初始阶段效果好,采用微物理方案Lin在后期效果好;当微物理方案相同时,积云对流参数化方案的变化对垂直速度、假相当位温、相对比湿的反映敏感;粗网格采用一定的积云对流参数化后,可一定程度再现α中尺度特征。
이2005년7월상순강회류역적일차매우봉폭우위연구대상,선취WRF모식중Lin화Ferrier량개미물리방안화KF、NKF、Betts-Miller-Janjic삼개적운삼수화방안,경과조합득도6조방안,진행량중망격감투모의,대수치모의결과진행분석비교。통과분석득출여하결론：6개방안균능모의출강수우대적주향、강수중심,기중Ferri-er화NKF방안급Ferrier화Betts-Miller-Janjic방안모의적강수강도화분포여실황최접근;재모의강수량시채용미물리방안Ferrier초시계단효과호,채용미물리방안Lin재후기효과호;당미물리방안상동시,적운대류삼수화방안적변화대수직속도、가상당위온、상대비습적반영민감;조망격채용일정적적운대류삼수화후,가일정정도재현α중척도특정。
Based on a Meiyu front rainstorm of Jianghuai region in July 2005, it is simulated with two grids by different physics processes and the result is analyzed.It shows that all schemes can simulate the direction of the rain and the center of the precipitation,but the two schemes（New-Kain-Fritsch and Ferri er;Betts-Miller-Janjic and Ferrier） are consistent with the actualities;the si mulation of Ferrier is good in the initial stage,the simulation of Lin is good in the latter stage;when microphysical schemes are same,the changes of cumulus convective parameterization schemes impact on vertical velocity,pseudo-equiva lent potential temperature,and relative humidity are obvious;some cumulus conv ective parameterization scheme in wide grid is able to reproduce meso-α-scale vortex features.