CAJ | 학술논문

　　利用Thies Clima激光雨滴谱仪(TCLPM)和站点加密观测资料，对2011年2月12日发生在武汉的一次短时暴雪天气过程的演变特征进行了初步分析。结果表明：人工观测与激光雨滴谱仪自动探测的累积降雪量较为一致，均为5.6 mm。该短时暴雪过程，先后经历降雨、雨夹雪和纯雪三个阶段，且激光雨滴谱仪监测到了这三种降水相态对应的不同滴谱特征，即：降雨阶段，粒子下落速度大而粒径小；纯雪阶段，粒子下落速度小而粒径大。同时，监测到三个阶段雨滴谱型的变化较明显，其经历了单峰、波动再多峰的演变过程，谱宽与数浓度呈明显增加趋势。降雨强度与反射率因子和粒子质量加权平均直径呈正相关：雨强大对应反射率因子和雨滴平均直径值大，雨强小对应反射率因子和雨滴平均直径也小。
　　이용Thies Clima격광우적보의(TCLPM)화참점가밀관측자료，대2011년2월12일발생재무한적일차단시폭설천기과정적연변특정진행료초보분석。결과표명：인공관측여격광우적보의자동탐측적루적강설량교위일치，균위5.6 mm。해단시폭설과정，선후경력강우、우협설화순설삼개계단，차격광우적보의감측도료저삼충강수상태대응적불동적보특정，즉：강우계단，입자하락속도대이립경소；순설계단，입자하락속도소이립경대。동시，감측도삼개계단우적보형적변화교명현，기경력료단봉、파동재다봉적연변과정，보관여수농도정명현증가추세。강우강도여반사솔인자화입자질량가권평균직경정정상관：우강대대응반사솔인자화우적평균직경치대，우강소대응반사솔인자화우적평균직경야소。
Data from Thies Clima laser precipitation monitor (TCLMP) and observations from intensive artificial weather stations were used to preliminarily analyze evolution characteristics of a short-range snowstorm event occurred on 12 February 2011 in Wuhan. The results show that cumulative snowfall of 5.6 mm by artificial observation is consistent with detecting one by TCLPM. This short-range snowstorm event has experienced three different periods such as rainfall, sleet and snowfall, and the different droplet spectra characteristics corresponding with three precipitation types have been monitored by TCLMP. During rainfall period, particle falling velocity is faster but particle diameter is smaller, while during snowfall period, particle falling velocity is slower but particle diameter is bigger. At the same time, the remarkable change of raindrop size distribution patterns in three periods have been monitored, and the patterns experience a process from unimodal spec-trum to undulation and then multimodal spectrum. Furthermore, both spectrum width and number concentration are significantly in increase trend. Rainfall intensity has a positive correlation with both reflectivity factor and massweighted mean diameter of particle, namely, higher rainfall intensity corresponds with larger reflectivity factor and bigger raindrops average diameter, and vice versa.