CAJ | 학술논문

利用北京逐时降水资料以及雷达组网产品、RPG衍生的风暴跟踪产品和Cell Trend产品，针对北京“6．23”雨强大、局地性明显的暴雨过程进行较为细致的诊断分析。结果表明，雷达监测产品较好地反映出此次过程是由大量中小尺度涡旋构成的对流性系统暴雨，中尺度特征显著。雷达组网产品较好地捕捉了整体降雨系统的演变过程，单站雷达组合反射率、多仰角基本反射率和径向速度揭示了该暴雨系统的多个对流单体结构和更替变化，其剖面刻画了局地对流降雨系统的典型回波特征，伴随强降雨出现了明显的后向干冷空气侵入弱回波区、前向回波悬垂和穹窿，以及倾斜式的低层辐合、高层辐散结构特征。RPG衍生的风暴跟踪产品和Cell Trend产品很好地监测出暴雨过程中小尺度系统的活动信息。其中，中小尺度涡旋的回波顶高和底高、最大回波高度的变化揭示了造成局地降水的对流单体发生发展过程中的强度、结构、内部气流运动变化特征和雨滴活动；液态水含量以及冰雹概率在整个降水过程中一直处于极大值，表明了该系统的强度与降雨雨量、雨强一致。
이용북경축시강수자료이급뢰체조망산품、RPG연생적풍폭근종산품화Cell Trend산품，침대북경“6．23”우강대、국지성명현적폭우과정진행교위세치적진단분석。결과표명，뢰체감측산품교호지반영출차차과정시유대량중소척도와선구성적대류성계통폭우，중척도특정현저。뢰체조망산품교호지포착료정체강우계통적연변과정，단참뢰체조합반사솔、다앙각기본반사솔화경향속도게시료해폭우계통적다개대류단체결구화경체변화，기부면각화료국지대류강우계통적전형회파특정，반수강강우출현료명현적후향간랭공기침입약회파구、전향회파현수화궁륭，이급경사식적저층복합、고층복산결구특정。RPG연생적풍폭근종산품화Cell Trend산품흔호지감측출폭우과정중소척도계통적활동신식。기중，중소척도와선적회파정고화저고、최대회파고도적변화게시료조성국지강수적대류단체발생발전과정중적강도、결구、내부기류운동변화특정화우적활동；액태수함량이급빙박개솔재정개강수과정중일직처우겁대치，표명료해계통적강도여강우우량、우강일치。
Based on the hourly precipitation at 7 stations of Beijing and original data of CINRAD and derived products in Daxing,a heavy rainfall process which was intensive and local obvious and occurred on 23 June 201 1 was analyzed in detail.The results showed that the convective system mingling with many meso-scale and micro-scale vortexes caused the heavy rainfall,and the meso-scale characteristic was obvious.The composite products of CINRAD could clearly capture the whole evolvement process of the weather sys-tem.The composite reflectivity,base reflectivity with multi-elevation angles and radial velocity of CINRAD described the subtle struc-ture of convective cells and their evolution during the heavy rainfall process.The vertical cross section of convection cells depicted clearly the typical echo features of the heavy rainfall including rear inflow weak echo and echo overhang,the low level convergence and the upper level divergence.The storm tracking information and cell trend products derived by RGP monitored perfectly a large quantity of meso-scale vortexes during the heavy rain.The variations of the echo tops,echo bottom and maximum echo height of meso-scale and micro-scale vortexes reflected the changes of the intensity and structure,the air motion and raindrop activities in the occurrence and development of convection cells.The vertical liquid water content (VIL)and probability of hail(POH)were keeping the high val-ue,which was well corresponding to rainfall intensity and precipitation.