| 宁夏三类降水云的时空分布及环流特征分析 |
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| 引用本文： | 陈豫英,李艳春.宁夏三类降水云的时空分布及环流特征分析[J].高原气象,2006,25(1):143-150. |
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| 作者姓名： | 陈豫英 李艳春 |
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| 作者单位： | 1. 兰州大学,大气科学学院,甘肃,兰州,730000;宁夏气象防灾减灾重点实验室,宁夏,银川,750002
2. 宁夏气象防灾减灾重点实验室,宁夏,银川,750002 |
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| 基金项目： | 科技部社会公益研究专项(2004DIB3J121)，宁夏气候对全球气候变化的响应及其机制项目共同资助 |
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| 摘 要： | 利用宁夏24个测站1971—2000年常规地面观测中云状、总云量、低云量、天气现象、降水量等资料,对宁夏30年中层状云、对流云及混合云降水的时空变化特征进行了分析。同时,利用NCEP/NCAR(1971—2000年)全球再分析资料,对宁夏三类降水云的环流特征进行了诊断分析。结果表明:30年中层状云降水次数明显多于对流云和混合云降水次数,是宁夏降水的主要类型,而混合云降水是宁夏大雨以上降水的主要类型;宁夏南部地区以层状云降水为主,北部地区对流云和混合云降水次数相对较多;三类降水云的月、年际和年代际变化特征及所对应的环流背景和影响系统具有明显的差异。
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| 关 键 词： | 层状云 对流云 混合云 环流特征 |
| 文章编号： | 1000-0534（2006）01-0143-08 |
| 收稿时间： | 2004-04-02 |
| 修稿时间： | 2004-04-022004-07-02 |
Temporal and Special Distributions of Three Kinds of Precipitation Clouds and Circulation Feature in Ningxia |
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| CHEN Yu-ying,LI Yan-chun.Temporal and Special Distributions of Three Kinds of Precipitation Clouds and Circulation Feature in Ningxia[J].Plateau Meteorology,2006,25(1):143-150. |
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| Authors: | CHEN Yu-ying LI Yan-chun |
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| Institution: | 1. College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China; 2. The Ningxia Key Laboratory of Meteorological Disaster Prevention and Mitigation Reduction, Yinchuan 750002, China |
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| Abstract: | Using the medium cloud,low cloud cover,total cloud cover,weather phenomena and precipitation data of routine surface observation at 24 stations of Ningxia in 1971-2000,the temporal-spacial variation characteristics of stratiform cloud,convective cloud and mixed cloud in Ningxia in 30 years are analyzed.At the same time,the circulation characteristics of three kinds of precipitation clouds are diagnostically analyzed by utilizing the NCEP/NCAR(1971-2000) global reanalysis data.The results show that the frequency of stratiform precipitation cloud is obvious larger than the that of convective and mixed ones in 30 years,which is the main type of precipitation in Ningxia,while the precipitation of mixed cloud is the main type of heavy rainfall,the frequencies of convective and mixed clouds in North Ningxia are relative larger.There are notable differences for the month,interannual and interdecadal change characteristics of three kinds of precipitation clouds and their circulation background and inducing systems. |
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| Keywords: | Stratiform cloud Convective cloud Mixed cloud Circulation feature |
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