CAJ | 학술논문

利用常规观测资料和MICAPS平台提供的相关资料，对濮阳市2013年4月18-20日的大风、强降温、中到大雪、晚霜冻、倒春寒等多种灾害性天气过程，用天气学的方法进行了综合分析.结果得出：①造成大风和强降温的高空影响系统是中路冷空气南压形成的密集的高空锋区，地面影响系统是强势庞大的冷高压.②由于东北冷涡携带的横槽不断分裂冷空气南下，使气温连续下降，致使地面气温降至0℃左右，出现了晚霜冻害，加之冷高压持续控制，使气温持续偏低，出现了倒春寒天气.③500 hPa和700 hPa的低槽、850 hPa的切变线是产生降水的影响系统，850 hPa的强锋区和地面庞大的冷高压提供了动力抬升条件.④500 hPa和700 hPa的中低空西南风急流为强降水提供了充沛的水汽供应.物理量场显示出700 hPa上强烈的辐合上升运动对降水贡献较大.⑤此次过程降温剧烈，850 hPa气温48 h内下降了19℃，700 hPa和850 hPa气温均降至0℃以下，使降水相态由降雨转成降雪.
이용상규관측자료화MICAPS평태제공적상관자료，대복양시2013년4월18-20일적대풍、강강온、중도대설、만상동、도춘한등다충재해성천기과정，용천기학적방법진행료종합분석.결과득출：①조성대풍화강강온적고공영향계통시중로랭공기남압형성적밀집적고공봉구，지면영향계통시강세방대적랭고압.②유우동북랭와휴대적횡조불단분렬랭공기남하，사기온련속하강，치사지면기온강지0℃좌우，출현료만상동해，가지랭고압지속공제，사기온지속편저，출현료도춘한천기.③500 hPa화700 hPa적저조、850 hPa적절변선시산생강수적영향계통，850 hPa적강봉구화지면방대적랭고압제공료동력태승조건.④500 hPa화700 hPa적중저공서남풍급류위강강수제공료충패적수기공응.물리량장현시출700 hPa상강렬적복합상승운동대강수공헌교대.⑤차차과정강온극렬，850 hPa기온48 h내하강료19℃，700 hPa화850 hPa기온균강지0℃이하，사강수상태유강우전성강설.
By using the conventional observation data and the relevant materials provided by MICAPS platform , the strong wind,cooling,snow,late frost,pollen and other severe weather process on April 18 to 20,2013 in Puyang with the methods of science of the weather are analyzed. The result shows that as follows. ①Effects of the strong winds and strong cooling of air is the middle cold air south pressure forming dense high-altitude front zones in high altitude system,the ground system is cold high strength large.②Because the transverse groove continuous division of the northeast cold vortex carrying cold air southward,which make the temperature drop in a row,the surface temperature dropped to 0℃or so and the late frost cold,combined with the continued cold high pressure,the temperature keep low constantly which leads to the cold spell in early spring.③Low trough on 500 hPa,700 hPa and 850 hPa shear line is the precipitation system,strong frontal zone of 850 hPa and ground large cold high pressure provides the dynamic lifting condition.④The low-level southwest jet of the 500 hPa and 700 hPa provides abundant water supply for the heavy rainfall. The physical quantity shows that the strong convergence and upward motion on 700 hPa contribute a lot to the precipitation.⑤With the heavy cooling,the 850 hPa temperature dropped 19℃within 48 h,700 hPa and 850 hPa temperature fell to below 0℃,the precipitation phase by the rain turned into snow.