楚雄师范学院学报 ›› 2020, Vol. 35 ›› Issue (6): 104-114.

• 地理 • 上一篇    下一篇

云南高原曲靖市与楚雄市近60年降水特征对比分析

姬莹雪1, 何萍, 赵琳3   

  1. 1.云南师范大学 地理学部,云南 昆明 650500;
    2.楚雄师范学院 地理科学与旅游管理学院,云南 楚雄 675000;
    3.百色学院 管理科学与工程学院,广西 百色 533000
  • 收稿日期:2020-10-20 出版日期:2020-11-20 发布日期:2021-03-29
  • 通讯作者: * 何萍(1965–),女,硕士生导师,二级教授,研究方向为气象、气候与自然地理综合。E-mail:1256252387@qq.com,Tel. 13987853461
  • 作者简介:姬莹雪(1996–),女,硕士研究生,研究方向为气象、气候与自然地理综合。E-mail:1351691701@qq.com
  • 基金资助:
    国家自然科学基金项目(NO.41465001)

A Comparative Analysis of the Precipitation Period in Urban Qujing and urban Chuxiong in the Yunnan Plateau in the Past 60 Years

JI Yingxue, HE Ping, ZHAO Lin   

  1. Faculty of Geography, Yunnan Normal University, Kunming, Yunnan Province 650500;
    College of Geographical Science and Tourism Management, Chuxiong Normal University, Chuxiong, Yunnan Province 675000;
    School of Management Science and Engineering, Baise University, Baise, Guangxi Autonomous Region 533000
  • Received:2020-10-20 Online:2020-11-20 Published:2021-03-29

摘要: 利用曲靖市和楚雄市的降水资料,对1960~2019年两城市的降水特征进行对比分析,并剖析两个城市降水产生差异的原因。结果表明:从年降水量上看,曲靖市的年均降水大于楚雄市,但从年总体降水量变化趋势来看,曲靖市呈减少趋势,而楚雄市呈增加趋势;曲靖市与楚雄市的降水主周期都为37年;在季节降水量上,曲靖市无论是雨季还是干季的年均降水量都要大于楚雄市,两城市雨季年均降水量呈不同的变化趋势,曲靖市雨季呈下降趋势,楚雄市呈上升趋势,而两城市干季降水量都呈上升趋势;在雨季两市由于受到季风的影响程度不同,所以降水有所差异;而干季降水量产生差异的主要原因是曲靖受昆明准静止锋的影响多阴雨天气,而楚雄干季受山脉阻挡和西风气流的影响,以干暖天气为主。

关键词: 降水特征, 曲靖市, 楚雄市, M-K突变检验, 小波分析

Abstract: A comparative analysis of the precipitation characteristics of urban Qujing and urban Chuxiong from 1960 to 2019 was carried out with precipitation data of Qujing and Chuxiong and the reasons for the differences in precipitation between the two cities were analyzed. The results show: ①In terms of annual precipitation, the average annual precipitation in urban Qujing is greater than that in urban Chuxiong, but from the perspective of the overall annual precipitation change trend, Qujing shows a decreasing trend while Chuxiong shows an increasing one; the main cycle of precipitation in both Qujing and Chuxiong is 37 years; ②In terms of seasonal precipitation, the average annual precipitation in urban Qujing is greater than that in urban Chuxiong in both the rainy and the dry seasons, and the average annual precipitation in the rainy season of the two cities shows different trends, that of Qujing downward while that of Chuxiong upward. The dry season precipitation in the two cities both show an upward trend; ③In the rainy season, the two cities are affected by the monsoon to different degrees, so the precipitation is different; and ④The main reason for the difference in the precipitation in the dry season is that Qujing is affected by the Kunming quasi-stationary front and the rainy weather, while the Chuxiong dry season is subject to influences of mountain blockade and westerly airflow and is thus characterized mainly by a dry and warm weather.

Key words: precipitation characteristic, urban Qujing, urban Chuxiong, M-K mutation test, wavelet analysis

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