大气科学2018，Vol.42Issue(2)：268-280,13.DOI:10.3878/j.issn.1006-9895.1705.16291
黄山层状云和对流云降水不同高度的雨滴谱统计特征分析
Statistical Characteristics of Raindrop Size Distribution for Stratiform and Convective Precipitation at Different Altitudes in Mt.Huangshan
摘要
Abstract
Based on the raindrop size distribution (RSD) data observed with PARSIVEL disdrometers deployed at different altitudes on Mt. Huang from June to July 2011, several microphysical parameters and the Gamma function fitting to raindrop spectra as well as the falling velocity of raindrops at different altitudes for different rain types (stratiform and convective) were compared and analyzed. Results show that convective precipitation had higher rainwater content, more intense rainfall rate, larger raindrops and higher raindrop concentrations compared with the stratiform precipitation at the same height; for both convective and stratiform precipitation, the diameter of raindrops on the mountainside was larger than that in the mountaintop and mountain bottom, which is possibly related to the difference in observation positions relative to the cloud bases. With increasing rain rate, the mass-weighted mean diameter (Dm) of raindrops increased and the standard deviation of generalized intercept parameter (log10Nw) decreased. The RSDs from all sampling positions were in good agreement with the gamma distribution. The evolution of raindrop spectrum was then investigated using three fitting parameters. It was found that compared with RSDs for convective precipitation, the RSDs for stratiform precipitation showed smaller variation between different altitudes, which suggests that its evolution was more stable. Finally, the raindrop falling velocity and its influential factors were studied.关键词
黄山/雨滴谱/海拔高度/对流云降水/层状云降水Key words
Mt. Huang/Raindrop size distribution/Altitude/Convective precipitation/Stratiform precipitation分类
天文与地球科学引用本文复制引用
李慧,银燕,单云鹏,金祺..黄山层状云和对流云降水不同高度的雨滴谱统计特征分析[J].大气科学,2018,42(2):268-280,13.基金项目
国家自然科学基金项目41030962,江苏高校优势学科建设工程资助项目(PAPD),National Natural Science Foundation of China (Grant 41030962), A Project,the Priority Academic Program Development of Jiangsu Higher Education on Institutions National (PAPD) （PAPD）
