主办单位：中国气象局沈阳大气环境研究所
国际刊号：ISSN 1673-503X
国内刊号：CN 21-1531/P
气象与环境学报

气象与环境学报 ›› 2012, Vol. 28 ›› Issue (4): 43-48.doi:

• 论文 • 上一篇    下一篇

1960—2009年辽宁区域性暴雪气候特征

阎琦1 蒋大凯1 陈传雷1 崔锦2 陆井龙1 桑明刚1   

  1. 1.沈阳中心气象台，辽宁 沈阳 110016；2.中国气象局沈阳大气环境研究所，辽宁 沈阳 110016
  • 出版日期:2012-08-30 发布日期:2012-08-30

Climatic characteristics of regional snowstorm from 1960 to 2009 in Liaoning province

YAN Qi 1 JIANG Da-kai1 CHEN Chuan-lei1 CUI Jin2 LU Jing-long1 SANG Ming-gang1   

  1. 1. Shenyang Central Meteorological Observatory, Shenyang 110016, China；2. Institute of Atmospheric Environment, China Meteorological Administration, Shenyang 110016, China
  • Online:2012-08-30 Published:2012-08-30

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摘要： 利用1960—2009年辽宁58个测站逐日降水资料，分析了辽宁区域性暴雪的气候变化特征。结果表明：辽宁区域性暴雪主要是在每年11月下旬到翌年3月15日，2月为最多月份。近50 a区域性暴雪过程次数呈上升趋势，并且存在9、5a和3a的周期变化|9a的周期变化信号一直存在，但强度在60年代末开始增强，70—80年代最强，5 a的周期变化信号从70年代初期开始出现，强度在70年代中期开始增强，3 a的变化信号一直存在，强度在70年代中期、80年代最强。区域性暴雪过程次数和暴雪总量呈自东南部向西北部逐渐减少，大致有3个中心，分别为：沈阳—抚顺—本溪一带、鞍山附近和丹东凤城地区|辽宁区域性暴雪落区主要有4种分布，分别为中东部暴雪型、东部暴雪型、南部暴雪型和西部暴雪型。

关键词: 辽宁区域性暴雪, 气候特征, 小波分析, M-K突变检验, EOF分解

Abstract:  Based on the diurnal precipitation data at 58 weather stations from 1960 to 2009, the climatic characteristics of regional snowstorm were analyzed in Liaoning province. The results indicate that the regional snowstorm mainly occurs from the last ten day of November to March 15 of the next year, especially in February. The number of snowstorm is in an increasing trend in the recent 50 years, and there exist the 9-year, 5-year and 3-year cycles. The 9-year cycle always exists, and its intensity enhances since 1960s, especially from 1970s to 1980s. The 5-year cycle occurs since 1970s and strengthens since the middle of 1970s. The 3-year cycle always exists, and its intensity is the strongest in the middle of 1970s and in 1980s. The number of regional snowstorm and snowstorm amount decrease from the southeast to the northwest, and three centers of snowstorm are located in Shenyang-Fushun-Benxi area, around Anshan area and in Fengcheng area. The falling area of regional snowstorm could be divided into four types, i.e. the middle and east snowstorm, the east snowstorm, the south snowstorm and the west snowstorm.

Key words: Regional snowstorm in Liaoning province, Climatic characteristics, Morlet wavelet analysis, Mann-Kendall test, EOF decomposition