CAJ | 학술논문

使用美国 ARM计划安徽省寿县站2008年的微脉冲激光雷达和毫米波雷达的观测数据对寿县上空卷云的宏观物理特性进行了分析,联合两种雷达观测卷云扩大了卷云的边界轮廓,得到更为全面的卷云信息,结果表明了联合激光雷达和毫米波雷达观测卷云的必要性。在此基础上,对观测期间寿县上空的卷云个例进行统计分析,结果显示：卷云过程的平均云底高度分布在5~10 km,其中6~7 km 范围所占的频率最大；平均云厚的分布范围为0.25~5 km,其中90.8%分布在0.5~2.5 km；卷云过程持续时间总体上随着持续时间的增大呈减少的趋势,持续时间最长为35.5 h,平均为3.6 h,持续时间小于5 h的卷云过程占82.5%。
사용미국 ARM계화안휘성수현참2008년적미맥충격광뢰체화호미파뢰체적관측수거대수현상공권운적굉관물리특성진행료분석,연합량충뢰체관측권운확대료권운적변계륜곽,득도경위전면적권운신식,결과표명료연합격광뢰체화호미파뢰체관측권운적필요성。재차기출상,대관측기간수현상공적권운개례진행통계분석,결과현시：권운과정적평균운저고도분포재5~10 km,기중6~7 km 범위소점적빈솔최대；평균운후적분포범위위0.25~5 km,기중90.8%분포재0.5~2.5 km；권운과정지속시간총체상수착지속시간적증대정감소적추세,지속시간최장위35.5 h,평균위3.6 h,지속시간소우5 h적권운과정점82.5%。
Macro-physical characteristics of cirrus above Shouxian were studied using data from micro-pulse lidar (MPL ) and millimeter wave cloud radar (MWCR)on mobile facilities of atmospheric radiation measurement (ARM).Enlarged profile and comprehensive information of cirrus were retrieved when combined data of these two facilities were used,which indicated the necessity of joint observation.On this basis,statistical analysis was performed using cirrus cases occurred above Shouxian during observation period.The results showed that the averaged height of cloud base ranged from 5 to 10 km,and cirrus with a base height of 6-11 km had higher occurrence frequency.The averaged thickness of cloud ranged from 0.25 to 5 km,among which cir-rus with a thickness of 0.5-2.5 km accounted for 90.8%.The statistical results also showed the occurrence frequency of cirrus process reduced with the increase of duration,the maximum and mean duration were 35.5 h and 3.6 h respectively,and cirrus with duration less than 5 h accounted for 82.5%.