CAJ | 학술논문

通过动力学推导探讨了重力波引发的局地暴雨天气过程的发生发展机制，提出预报重力波传播的可行方法，并通过个例分析验证此方法的可行性。结果表明：（1）重力波的传播路径应与位温脊线一致，利用地面观测数据分析等位温线，可有效预报重力波的发生和演变；（2）波动既可以从高位温一侧向低位温一侧传播，也可以反方向传播；（3）重力波的传播与地面辐合线虽有对应关系，但并不一定由辐合线产生；（4）阵风锋是激发重力波的一种触发机制，受阵风锋作用2011年8月9日石家庄市区西侧造成短时强降水。
통과동역학추도탐토료중력파인발적국지폭우천기과정적발생발전궤제，제출예보중력파전파적가행방법，병통과개례분석험증차방법적가행성。결과표명：（1）중력파적전파로경응여위온척선일치，이용지면관측수거분석등위온선，가유효예보중력파적발생화연변；（2）파동기가이종고위온일측향저위온일측전파，야가이반방향전파；（3）중력파적전파여지면복합선수유대응관계，단병불일정유복합선산생；（4）진풍봉시격발중력파적일충촉발궤제，수진풍봉작용2011년8월9일석가장시구서측조성단시강강수。
This paper dynamically discussed the development mechanisms of local rainstorm triggered by gravity waves,and proposed a feasible method,which was verified by a case study,to forecast the propagations of gravity waves. The results showed that:(1 )the propagation of gravity waves strictly consistent with the potential temperature ridge,and by analyzing the isentrope,the forecasting of the generation and evolution of gravity waves would be more effective;(2)the waves could travel from higher potential temperature to lower side,or propagate in reverse orientation;(3)there were corresponding relations between the propagation path of gravity waves and the surface convergence line. Though the waves propagated along with the convergence line,it did not generate the gravity waves;(4)in a case of rainstorm on 9th August 2011 in Shijiazhuang,the gust front generated the gravity waves as a triggering mechanism, and brought about strong rainfall in the west urban.