热带气象学报2017，Vol.33Issue(6)：922-932,11.DOI:10.16032/j.issn.1004-4965.2017.06.013
广西南宁冬季层状暖云微物理特征的飞机观测分析
AIRBORNE MEASUREMENTS OF MICROPHYSICAL CHARACTERISTICS OF WARM STRATUS CLOUDS IN WINTER NANNING, GUANGXI
摘要
Abstract
Microphysical characteristics of warm layer clouds in winter Nanning,Guangxi are statistically analyzed based on 12 flights of airborne instruments with a Y-12 aircraft.The results show that the clouds vary obviously by layers vertically.As a typical macrophysical characteristic of the layer clouds,the temperature inversion appears in precipitation clouds,with several layers of temperature inversion.Temperature inversion often appears near the cloud top.Secondly,for the 12 flight cases,the mean number concentration of cloud droplets is 652± 607 cm-3.The concentration in non-precipitation clouds is larger than in precipitation clouds,with the values being 678± 348 cm-3 and 615± 363 cm-3 respectively.The average liquid water content (LWC) is 1.03 ± 0.73 g/m3.LWC in precipitation clouds is 1.3 ± 0.9 g/m3,which is apparently larger than in non-precipitation clouds (0.88± 0.6 g/m3).The mean effective diameter (ED) is 18.2± 5.6 μm.In precipitation clouds,the ED is 19.4± 5.0 μm,while it is 17.3± 6.0 μm in non-precipitation clouds.Furthermore,the peak value of cloud number concentration is at cloud base in lower clouds.It decreases with the height.Most of the droplets are less than 50 μm.The second peak value of the PSD is about 6.5 μm.From the cloud droplet images in precipitation clouds,it is known that large droplets are at lower layer clouds with great number.But in non-precipitation clouds,unusually big cloud droplets could be found.关键词
云微物理特征/飞机探测/层状暖云/冬季/广西Key words
cloud microphysical characteristics/flight measurement/warm stratus clouds/winter/Guangxi分类
天文与地球科学引用本文复制引用
马新成,程鹏,毕凯,王冀,韦增岸,黄梦宇,金华,张磊..广西南宁冬季层状暖云微物理特征的飞机观测分析[J].热带气象学报,2017,33(6):922-932,11.基金项目
国家自然科学基金项目(41675138) （41675138）
北京市气象局科技项目(BMBKJ201506001) （BMBKJ201506001）
北京市优秀人才培养项目(20081D0200800058)共同资助 （20081D0200800058）
