J4 ›› 2012, Vol. 30 ›› Issue (3): 421-425.

• 论文 • 上一篇    下一篇

甘肃民勤地区沙尘暴变化趋势及影响因素

赵明瑞1,2杨晓玲3滕水昌4   

  1. 1. 中国气象局兰州干旱气象研究所、甘肃省干旱气候变化与减灾重点实验室、中国气象局干旱气候变化与减灾重点开放实验室,甘肃兰州730020;
    2. 甘肃省民勤县气象局,甘肃民勤733300; 3. 甘肃省武威市气象局,甘肃武威733099; 4. 甘肃省永昌县气象局,甘肃永昌737200
  • 收稿日期:2012-02-08 出版日期:2012-09-30 发布日期:2012-06-15
  • 作者简介:赵明瑞( 1974 - ) ,男,甘肃民勤人,工程师,主要从事天气预报及服务工作. E - mail: mqqxj@163. com
  • 基金资助:

     甘肃省气象局一线高级专门人才基金资助

Changing Trend of Sandstorm and Its Influencing Factor in Recent 57 Years in Minqin of Gansu Province

ZHAO Mingrui1,2,YANG Xiaoling3,TENG Shuichang4   

  1. 1. Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province,
    Key Open Laboratory of Arid Climate Change and Disaster Reduction of CMA,Institute of Arid Meteorology,China Meteorological Administration,Lanzhou 730020,China;
    2. Minqin Meteorological Station of Gansu Province,Minqin 733300,China;
    3. Wuwei Meteorological Bureau of Gansu Province,Wuwei 733099,China;
    4. Yongchang Meteorological Station of Gansu Province,Yongchang 737200,China
  • Received:2012-02-08 Online:2012-09-30 Published:2012-06-15

摘要:

利用民勤国家基准气候站1954 ~ 2010 年气象观测资料,运用线性拟合、Mann - kendall 和相关性检验等方法分析了民勤地区近57 a 来沙尘暴变化趋势及影响因素,结果表明: 民勤沙尘暴的出现时间和频次有明显的日变化,沙尘暴有月际、季节差异,年际和年代际变化趋势明显,年际变化出现突变, 1992 年为突变点; 沙尘暴强度和所造成的危害有增大的趋势。影响民勤沙尘暴的因素主要是大风次数、风力、气温和自然环境,降水增加相对湿度增大在一定程度上抑制沙尘暴的出现,人为因素和局部环境对沙尘暴的发生、发展有一定的影响。

关键词: 民勤, 沙尘暴, 变化趋势, 影响因素

Abstract:

Based on meteorological observation data from Minqin national reference climate station during 1954 - 2010,the changing trend and its influencing factor of sandstorm were analyzed by using linear regression and Mann - kendall test in recent 57 years in Minqin.The results show that sandstorm frequency and occurrence time had obvious daily variation,and there were monthly and seasonal difference. The annual and decadal variation of sandstorm days presented obvious change tendency,and appeared abrupt change in1992. The intensity and harm of sandstorm presented increasing trend. The main factors affecting dust storm were gale days,wind speed,temperature and the natural environment in Minqin. Increase of precipitation and relative humidity would bate sandstorm occurrence in some extent. Human factors and local environment had a certain impact on dust storm occurrence and development.

Key words: Minqin, sandstorm, changing trend, influencing factor

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