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| 背风波和逆温层效应对兰州小高压形成环境的影响研究 | |
| 引用本文： | 李国昌,李岩瑛,张存杰,张强,李栋梁,孙爱芝.背风波和逆温层效应对兰州小高压形成环境的影响研究[J].高原气象,2006,25(2):293-301. |
| 作者姓名： | 李国昌 李岩瑛 张存杰 张强 李栋梁 孙爱芝 |
| 作者单位： | 1. 甘肃省人工影响天气办公室,甘肃,兰州,730020 2. 中国气象局,兰州干旱气象研究所,甘肃,兰州,730020;甘肃省武威市气象局,甘肃,武威,733000 3. 中国气象局,兰州干旱气象研究所,甘肃,兰州,730020 4. 中国科学院,寒区旱区环境与工程研究所,甘肃,兰州,730020 5. 兰州大学,资源环境学院,甘肃,兰州,730000 |
| 基金项目： | 科技部科研院所社会公益研究项目”中国干旱气象灾害监测预警方法研究”04子课题(2004DIB5J192-04)，甘肃省人工增雨防雹作业决策指挥系统(2002人影-3)共同资助 |
| 摘 要： | 利用兰州和民勤两站干年(1995年)、湿年(1994年)的5~6月08:00和20:00气象观测资料,采用Scorer背风波参数等方法对兰州小高压的形成、发展机制进行动力和热力学诊断分析。分析表明,兰州存在明显的背风波效应和下沉逆温;民勤有较强的逆温层特征,逆温频数多且强度大,辐射和扰动逆温较明显,它们的背风波和逆温层特征影响着兰州小高压的形成、尺度和位置。兰州小高压是青藏高原大地形和大气环流共同作用的一种边界层现象,与青藏高原北部较强的逆温和背风波效应有着重要的关系,运用中尺度天气学方法得出兰州小高压的预报流程,以建立其诊断和预报的概念模型。 |
| 关 键 词： | 兰州小高压 青藏高原 背风波效应 逆温层 |
| 文章编号： | 1000-0534（2006）02-0293-09 |
| 收稿时间： | 2005-03-07 |
| 修稿时间： | 2005-03-072005-12-20 |
Study on Influence of the Lee Wave and Inversion Effect on Formation of Lanzhou Small Anticyclone |
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| LI Guo-chang,LI Yan-ying,ZHANG Cun-jie,ZHANG Qiang,LI Dong-liang,SUN Ai-zhi.Study on Influence of the Lee Wave and Inversion Effect on Formation of Lanzhou Small Anticyclone[J].Plateau Meteorology,2006,25(2):293-301. | |
| Authors: | LI Guo-chang LI Yan-ying ZHANG Cun-jie ZHANG Qiang LI Dong-liang SUN Ai-zhi |
| Institution: | 1. Gansu Provincial Artificial Modification Weather Office, Lanzhou 730020, China ; 2. Lanzhou Arid Institute of Meteorology, China Meteorological Administration, Lanzhou 730020, China; 3. Wuwei Meteorological Bureau of Gansu Province, Wuwei 733000, China; 4. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China ; 5. Resource and Environment College of Lanzhou University, Lanzhou 730000, China |
| Abstract: | Using the meteorological observation data of Lanzhou and Minqin stations in drought year(1995) and wet year(1994) at 08:00 in May~June,the forming and developing mechanismes of Lanzhou small anticyclone are dynamically and thermodynamically diagnosed with methods of lee wave effect and inversion level.The results show that there are obvious lee wave and subsidence inversion in Lanzhou and Minqin has the characteristics of stronger inversion level,and frequency of them is more and intensity is strong,the radiation and disturbed inversion level are more obvious,their lee wave and inversion level property have influenced on the formation,scale and location of Lanzhou small anticyclone.Lanzhou small anticyclone is a boundary phenomenon which has the interation of Qinghai-Xizang Plateau large topography and atmospheric circulation,it has an important relation with the stronger inversion and lee wave effect over North of Qinghai-Xizang Plateau.The forecast flow of Lanzhou small anticyclone is obtained using the mesoscale synoptic method that estabilish its diagnostic and predictable concept model. |
| Keywords: | Lanzhou small anticyclone Qinghai-Xizang Plateau Lee wave effect Inversion layer |
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