img

官方微信

img

群号:冰川冻土交流群

QQ群:218834310

高级检索

冰川冻土 ›› 2017, Vol. 39 ›› Issue (3): 534-539.doi: 10.7522/j.issn.1000-0240.2017.0060

• 冰冻圈与全球变化 • 上一篇    下一篇

呼和浩特近50a短时强降水统计特征

马素艳1, 李林惠2   

  1. 1. 内蒙古自治区气象台, 内蒙古 呼和浩特 010051;
    2. 内蒙古自治区气象局, 内蒙古 呼和浩特 010051
  • 收稿日期:2017-01-09 修回日期:2017-03-16 出版日期:2017-06-25 发布日期:2017-09-09
  • 作者简介:马素艳(1982-),女,内蒙古呼伦贝尔人,工程师,2013年在南京信息工程大学获硕士学位,从事短期天气预报研究.E-mail:may6117@sina.com.
  • 基金资助:
    中国气象局预报员专项(CMAYBY2015-011);内蒙古自治区气象局青年基金项目(nmqnqx201509)资助

A study of temporal-spatial distribution characteristics of short-term heavy rainfall in Hohhot from 1961 through 2010

MA Suyan1, LI Linhui2   

  1. 1. Inner Mongolia Autonomous Region Meteorological Observatory, Hohhot 010051, China;
    2. The Inner Mongolia Regional Meteorological Bureau, Hohhot 010051, China
  • Received:2017-01-09 Revised:2017-03-16 Online:2017-06-25 Published:2017-09-09

摘要: 利用呼和浩特市1961-2010年6个国家气象观测站逐小时降水量资料,应用数理统计、滑动平均和M-K突变检验分析了呼和浩特市短时强降水时空分布特。结果表明:呼和浩特市短时强降水频次的空间分布不均匀,主要分布在呼和浩特市南部及山脉迎风坡;呼和浩特市短时强降水具有明显的季节变化和日变化特征,短时强降水频次最高在7月下旬和8月上旬,最容易发生在午后至傍晚,年代和年变化显示20世纪90年代为正距平,1993年之后,呼和浩特市短时强降水次数呈上升趋势,1997年通过显著性检验水平临界线,即呈明显上升趋势,1998年达到峰值。

关键词: 呼和浩特, 短时强降水, 时空分布

Abstract: Based on the daily precipitation data from 1961 through 2010 at six meteorological stations in Hohhot, the temporal-spatial distribution characteristics of the short-term heavy rainfall were analyzed with mathematical statistics, moving average and Mann Kendall test. The results indicate that the temporal-spatial distribution of short-term heavy rainfall was extremely uneven, with the maximum in south of Hohhot and along the windward slopes of mountains. In this period, the short-term heavy rainfall event has obvious characteristics of annual cycle and daily variation. The short-term heavy rainfall frequency occurs in later July or early August. A majority of short-term heavy rainfall events often occur in afternoon and evening. Annual and interannual variations of short-term heavy rainfall events showed a positive anomaly in the 1990s; the short-term heavy rainfall frequency in Hohhot showed that there was a rising trend since 1993, and past the critical line of significant test in 1997, and then had a distinct upward trend and reached a peak in 1998.

Key words: Hohhot, the short-term heavy rainfall, temporal-spatial distribution

中图分类号: 

  • P468.0+24