干旱气象

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近32 a安徽省风速、风向分布特征

  

  1. 1. 安徽省公共气象服务中心,安徽 合肥 230031;2. 南京信息工程大学气象灾害省部共建教育部重点实验室,江苏 南京 210044
  • 收稿日期:2014-05-13 出版日期:2015-04-30 发布日期:2014-07-29
  • 作者简介:王传辉(1984-),男,黑龙江齐齐哈尔人,硕士,主要从事气候动力学及专业气象服务. E-mail:wang_chh@aliyun.com
  • 基金资助:

    国家重点基础研究发展规划项目(2012CB955204)、安徽省气象局科技发展基金(KM201412)及青岛市科技局项目(11-2-3-57-nsh)共同资助

Distribution Characteristics of Wind in Anhui Province During 1981-2012

  1. 1. Anhui Public Weather Service Center; Hefei 230031, China;
    2. Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science & Technology, Nanjing 210044, China
  • Received:2014-05-13 Online:2015-04-30 Published:2014-07-29

摘要:

基于安徽省1981~2012年近32 a风速、风向资料,利用常规气象统计方法,分析了安徽省平均风速、最大风速以及极大风速的空间分布特征,重点分析了最大风速易出现的方位、季节以及各重现期下的风速分布。结果表明:平均风速与最大风速的空间分布相似,大别山区和皖南山区低海拔地区为风速低值区,黄山以及大别山区以北和以东的平原和丘陵地区为风速大值区。除大别山区北部和皖南山区南部的部分地区外,近32 a全省大部风速普遍呈现显著减少趋势。长江以北地区的最大风速出现偏西风的频率最高,大别山区和皖南山区最大风速出现频率最高的方位空间差异明显。此外,最大风速出现在春季的频率最高。

关键词: 平均风速, 最大风速, 空间分布, 安徽省

Abstract:

Based on the wind speed and direction data in Anhui Province from 1981 to 2012, the spatial distributions of average wind speed, maximum 10-minute average wind speed and maximum instantaneous wind speed were analyzed by using statistical methods, especially for on the direction, seasonal variations and spatial distribution in 30, 50, 100 years of the maximum 10-minute average wind speed. The results showed that the spatial distribution of average wind speed was similar with the maximum 10-minute average wind speed, and the values of wind speed in mountainous region of the Dabie Mountain and southern Anhui with low altitude were low, while the plains and hills area in the north and east of the Dabie Mountain and the Yellow Mountain were high. The wind speed generally showed a significant decreasing trend in Anhui Province during 1981-2012 except for the parts in north of the Dabie Mountain and south of mountainous area in southern Anhui. For the direction of the maximum 10-minute average wind, the frequency of westerly wind was the highest in the north of the Yangtze River, and the most occurrence directions in mountainous area of the Dabie Mountain and southern Anhui were different significantly. Moreover, the maximum wind speed occurred most frequently in spring, especially in March.

Key words: average wind speed, maximum 10-minute average wind speed, spatial distribution, Anhui Province

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