河南一次层状云宏微观物理特征分析

利用2007年3月23日PMS机载云粒子测量系统所观测的河南层状云微物理资料,结合雷达、卫星、探空等资料,分析了云宏微观物理结构特征。结果表明,在云的暖层,FSSP-100测量的小云滴平均直径多在5～12μm,平均7.33μm;小云滴最大直径变化在14～47μm,平均27.80μm;小云滴总数浓度取值范围为47.73～352.00个/cm3,平均160个/cm3。在云的冷层,FSSP-100测量的小云粒子（包括云滴、冰晶）最大直径平均24.8μm;小云粒子总数浓度取值范围为0.899～641.000个/cm3,平均297个/cm3。机载King热线液态含水量仪观测云中存在过冷液态水,过冷云水含量变化在0.02～0.20 g/m3,平均0.093 g/m3。最大值0.202 g/m3,出现在4 368 m（温度-8.5℃）高度。云中粒子谱型主要为负指数型和单峰型。

A Macro and Micro Physical Characteristics Analysis of Stratiform Clouds in Henan

By using the microphysical data of stratiform clouds in Henan which were observed by PMS airborne cloud particle measure system on March 23,2007 and combining with the radar,the satellite and the sounding data,the macro and micro physical structure characteristics of clouds were analyzed.The results showed that the average diameter of small cloud particle which was measured by FSSP-100 in the warm layer of clouds was during 5-12 μm,and the average value was 7.33 μm.The biggest diameter of small cloud particle changed during 14-47 μm,and the average value was 27.80 μm.The total number concentration scope of small cloud particle was during 47.73-352.00/cm3,and the average value was 160/cm3.In the cold layer of clouds,the biggest diameter average value of small cloud particle(included the cloud droplet and the ice crystals) which was measured by FSSP-100 was 24.8 μm.The total number concentration scope of small cloud particle was during 0.899-641.000/cm3,and the average value was 297/cm3.Airborne King heat line liquid water content instrument observed that the super-cooling liquid water existed in the clouds.The water content changed during 0.02-0.20 g/m3,and the average value was 0.093 g/m3.The biggest value which was 0.201 6 g/m3 appeared in 4 368 m height(the temperature was-8.5 ℃).The particle spectrum type in the clouds was mainly the negative exponent type and the single peak type.