CAJ | 학술논문

利用常规资料、ncep 2.5°×2.5° 6 h再分析资料和卫星云图资料对2008年6月13日～14日汕头地区一次特大暴雨天气过程成因进行了综合分析.结果表明:高低层环流配置为暴雨提供了有利的大尺度环流条件;高低空急流的相互作用是此次暴雨产生的重要原因;中尺度对流云团是此次特大暴雨的直接影响系统;低空急流为暴雨的发生发展提供充沛的水汽和不稳定能量;高低空正负涡度柱和正负散度柱的耦合是产生暴雨的动力机制.
이용상규자료、ncep 2.5°×2.5° 6 h재분석자료화위성운도자료대2008년6월13일～14일산두지구일차특대폭우천기과정성인진행료종합분석.결과표명:고저층배류배치위폭우제공료유리적대척도배류조건;고저공급류적상호작용시차차폭우산생적중요원인;중척도대류운단시차차특대폭우적직접영향계통;저공급류위폭우적발생발전제공충패적수기화불은정능량;고저공정부와도주화정부산도주적우합시산생폭우적동력궤제.
The process cause of a heavy rainfall occurred in Shantou of Guangdong Province from June 13~(th) to 14~(th) ,2008 was analyzed by using the conventional data,2.5°×2.5°6 h data from NECP and hourly satellite data. The results showed that the circulation configuration in lower and higher level formed a favorable large scale environment for rainstorm, and the important reason of the rainstorm occurring was the coupling of upper and lower tropospheric jet streams ,and the mesoscale convective cloud cluster caused directly influenced the heavy rain,and lowlevel jet brought abundant vapor and instability energy for the heavy rainfall. Moreover,positive and negative vorticity columns appearing in high and low level,mutual coupling structure of divergence columns were the dynamic mechanisms for the heavy rainstorm occurrence.