| 高原季风与高原低涡的关系分析 |
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| 引用本文： | 郑蓓,范广洲.高原季风与高原低涡的关系分析[J].高原山地气象研究,2019,39(3):7-13. |
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| 作者姓名： | 郑蓓 范广洲 |
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| 作者单位： | 成都信息工程大学大气科学学院高原大气与环境四川省重点实验室/气候与环境变化联合实验室, 成都 610225 |
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| 基金项目： | 国家自然科学基金项目(91537214)国家重点研发计划(2018YFC1505702) |
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| 摘 要： | 本文基于高原季风指数和高原涡数据集,利用小波分析等统计方法对高原季风和高原低涡的气候特征进行了统计分析,并探究了两者之间的关系,主要结果有:(1)高原季风夏强冬弱,高原季风的准4年、准6年周期振荡的特征十分明显。(2)30年来高原低涡平均每年生成64.2个,其中有51.2个是暖性高原低涡。高原低涡的强度季节内呈正态分布,高原低涡的生成频数的季节内变化有明显的周期振荡特征。(3)高原季风的周期振荡特征在季节尺度和年际尺度上与高原低涡气候特征有一定的相关性,准4年与准6年周期振荡特征十分明显。通过相关概率统计:高原季风的建立时间与强度都与高原低涡的气候特征有一定的正负相关。
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| 关 键 词： | 高原季风指数 高原低涡 小波分析 |
| 收稿时间： | 2019-06-11 |
Analysis of the Relationship between Plateau Monsoon and Plateau Vortex |
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| Affiliation: | School of Atmospheric Sciences/Plateau Atmosphere and Environment Key Laboratory of Sichuan Province/Joint Laboratory of Climate and Environment Change, Chengdu University of Information Technology, Chengdu 610225, China |
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| Abstract: | This paper is based on the plateau monsoon index and the plateau vortex data set,using statistical methods such as wavelet analysis to the climate characteristics of plateau monsoon and plateau low vortex has carried on the statistical analysis,and explore the relationship between the two,the main results are:(1) the plateau monsoon is strong in summer and weak in winter,the quasi-four-year and quasi-six-year periodic oscillation characteristics of plateau monsoon are very obvious.(2) in the past 30 years,the average annual number of plateau vortex was 64.2,51.2 of which were warm plateau vortex.The intensity of the plateau vortex is normally distributed in the seasons,and the frequency of the plateau vortex has obvious periodic oscillation characteristics in the seasons.(3) the periodic oscillation characteristics of the plateau monsoon have a certain correlation with the climatic characteristics of the plateau vortex on the seasonal scale and inter-annual scale,and the quasi-4-year and quasi-6-year periodic oscillation characteristics are very obvious.According to the correlation probability statistics,the establishment time and intensity of the plateau monsoon are positively or negatively correlated with the climatic characteristics of the plateau vortex. |
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