CAJ | 학술논문

利用多普勒雷达、SAFIR3000三维闪电定位系统和气象自动站等观测资料，以线状中尺度对流系统内多个γ中尺度强降水单体为研究对象，揭示了单体之间、单体与β中尺度线状对流系统的多种相互关系，设计多种雷达参量对单体的结构演变进行定量化描述，进一步建立了对流单体结构演变与闪电活动的相互关系。得到以下结论：（1）线状中尺度对流系统内顺义、房山、固安、宝坻对流单体分别造成了1 h降雨23、50、27、70 mm，在其演变过程中，顺义单体被另一个单体追逐、供给，房山单体包括2个更小单体的合并过程，而固安、宝坻单体的初生和发展与线状中尺度对流系统是被喂养、吞食的关系。（2）设计的雷达参量犞40（40 dBz强回波核的体积大小）、犞40UP-6（6 km高度以上40 dBz强回波核的体积大小）、犛ET11（回波顶在11 km处的回波范围大小）量化描述了单体的三维结构演变特征，犉ic （云闪频数）和犉cg （地闪频数）与上述雷达参量关系密切，如与犞40UP-6的相关系数为0．63-0．97；而犉ic比犉cg更敏感地呼应单体结构的变化。（3）固安单体在成熟阶段，主正电荷区（即辐射点最大密集区所处的地方）维持在较低位置，远低于其他单体在成熟阶段主正电荷区的高度。（4）在对流单体合并后，犉ic和犉cg增大且主正电荷区明显抬升、闪电频数陡增对应降水强度增大、闪电频数峰值超前于降雨强度极值等特征，对灾害天气的预警具有积极意义。
이용다보륵뢰체、SAFIR3000삼유섬전정위계통화기상자동참등관측자료，이선상중척도대류계통내다개γ중척도강강수단체위연구대상，게시료단체지간、단체여β중척도선상대류계통적다충상호관계，설계다충뢰체삼량대단체적결구연변진행정양화묘술，진일보건립료대류단체결구연변여섬전활동적상호관계。득도이하결론：（1）선상중척도대류계통내순의、방산、고안、보지대류단체분별조성료1 h강우23、50、27、70 mm，재기연변과정중，순의단체피령일개단체추축、공급，방산단체포괄2개경소단체적합병과정，이고안、보지단체적초생화발전여선상중척도대류계통시피위양、탄식적관계。（2）설계적뢰체삼량교40（40 dBz강회파핵적체적대소）、교40UP-6（6 km고도이상40 dBz강회파핵적체적대소）、리ET11（회파정재11 km처적회파범위대소）양화묘술료단체적삼유결구연변특정，순ic （운섬빈수）화순cg （지섬빈수）여상술뢰체삼량관계밀절，여여교40UP-6적상관계수위0．63-0．97；이순ic비순cg경민감지호응단체결구적변화。（3）고안단체재성숙계단，주정전하구（즉복사점최대밀집구소처적지방）유지재교저위치，원저우기타단체재성숙계단주정전하구적고도。（4）재대류단체합병후，순ic화순cg증대차주정전하구명현태승、섬전빈수두증대응강수강도증대、섬전빈수봉치초전우강우강도겁치등특정，대재해천기적예경구유적겁의의。
The data from the Doppler radar,SAFIR3000 lightning location system and high-density automatic meteorological stations observations are used to design a variety of radar quantitative parameters and analyze the evolution of cells structures, the lightning activity and electrical vertical structure of the severe rainfall cells structure in a Leading Line Meso-scale Convec-tive System (LL-MCS).The relationship between convective cells andβ-mesoscale LL-MCS is revealed.The conclusions are as follows.At first,the four cells (Gu’an in Hebei,Shunyi and Fangshan in Beijing,Baodi in Tianjin)in the single squall respec-tively brought rainfalls of about 23 mm,50 mm,27 mm and 70 mm in one hour.In the Fangshan cell,two smaller monomers were merged.The cell of Shunyi was followed by the other cell.In the Gu’an and Baodi cell,their development is related to LL-MCS by feeding and swallowing.Secondly,V40 (40 dBz echo volume range),V40UP-6 (40 dBz echo volume above the height of 6 km),SET11 (echo area range at 11 km level)could describe the 3D quantitative structure change of a cell,and Fcg(CG light-ning frequency)and Fic (IC flash frequency)were closely related to the radar parameters,such as its correlation coefficient with V40UP-6 being between 0.63 and 0.97.The flash frequency of IC was more sensitive than CG to echo structure change.Thirdly, the height of the radiant point maximum concentration area in the Gu’an cell was below 6 km,which was far lower than the other cells at the same stage.At last,the feature of lightning frequency of CG and lightning frequency of IC increased with the main positive charge area significantly lifted after the merger of convective cells,and the characteristics of the lightning frequen-cy increase showing relationship with the rainfall intensity increasing as well as the lightning frequency peak leading the maxi-mum of rainfall intensity have positive significance for warning of disaster weather.