| 1991 年梅雨锋云系的中尺度分析 |
| |
| 引用本文： | 项续康,马岚.1991 年梅雨锋云系的中尺度分析[J].应用气象学报,1993,4(3):286-292. |
| |
| 作者姓名： | 项续康 马岚 |
| |
| 作者单位： | 1.国家卫星气象中心 北京100081
(项续康，马岚)，国家卫星气象中心 北京100081(王大昌) |
| |
| 基金项目： | 《八五》江淮流域持续性特大暴雨过程的成因研究课题 |
| |
| 摘 要： | 根据数字展宽云图和常规资料分析得到，1991年梅雨期江淮地区大—暴雨大多是由中尺度云团产生的。它主要是:低涡暖切云团和冷切（冷锋）云团。它们的大多数是中—β尺度云团，平均维持时间为5—6小时，平均最低云顶温度为–69℃左右。低涡暖切云团产生于低涡中心东侧，低空急流轴的左前方。而冷切云团产生于梅雨锋云系的尾部与西南季风交汇处。另外，分析了云团云顶温度与降水的关系，发现产生≥5 mm/h降水的云团，其中75%的云团云顶温度小于或等于–64℃。
|
| 关 键 词： | 中尺度云团 低涡暖切 冷切 最低云顶温度 |
THE MESOSCALE ANALYSIS OF THE MEI-YU FRONT CLOUD SYSTEM IN 1991 |
| |
| Xiang Xukang Ma Lan Wang Dachang.THE MESOSCALE ANALYSIS OF THE MEI-YU FRONT CLOUD SYSTEM IN 1991[J].Quarterly Journal of Applied Meteorology,1993,4(3):286-292. |
| |
| Authors: | Xiang Xukang Ma Lan Wang Dachang |
| |
| Affiliation: | 1.(National Satellite Meteorological Center, Beijing 100081) |
| |
| Abstract: | According to the analysis of the GMS digital stretched cloud image and conventional precipitation data, it shows that storm and heavy rainfall in the Changjiang-Huaihe River valley during Mei–yu period of 1991 is mainly produced by mesoscale cloud clusters. They are: vortex-warm front shear cloud clusters and cold front shear cloud clusters. Most of them are meso-β scale cloud clustets. The mean life time is 5—6 hours and the mean minium cloud top temperature is –69℃. It is seen that the vortex-warm front shear cloud clusters are created on the eastern side of the vortex center and in the left front of low level jet axis, while the cold front cloud clusters are located in the confluence site of the rear of Mei–yu front cloud system with the southwest monsoon. In addition, the relationship between cloud cluster top temperature and precipitation are estimated. It is found that the top temperature of 75% of cloud cluster with rainfall of 5mm/h and over is –64℃ or down. |
| |
| Keywords: | |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《应用气象学报》浏览原始摘要信息 |
|
点击此处可从《应用气象学报》下载全文 |
