[1]赵春雨,王冀,严晓瑜,等.东北地区冬季降雪的气候特征及其区划[J].自然灾害学报,2009,18(05):029-35.
 ZHAO Chun-yu,WANG Ji,YAN Xiao-yu,et al.Climatic characteristics and regionalization of winter snowfall in Northeast China[J].,2009,18(05):029-35.
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东北地区冬季降雪的气候特征及其区划
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
18
期数:
2009年05期
页码:
029-35
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:
Climatic characteristics and regionalization of winter snowfall in Northeast China
作者:
赵春雨12 王冀3 严晓瑜2 王颖2 罗勇4
1. 南京信息工程大学, 江苏南京210044;
2. 沈阳区域气候中心, 辽宁沈阳110016;
3. 北京区域气候中心, 北京100081;
4. 国家气候中心, 北京100081
Author(s):
ZHAO Chun-yu12 WANG Ji3 YAN Xiao-yu2 WANG Ying2 LUO Yong4
1. Nanjing University of Information Science & Technology, Nanjing 210044, China;
2. Climate Center of Shenyang Area, Shenyang 110016, China;
3. Climate Center of Beijing Area, Beijing 100081, China;
4. National Climate Center, Beijing 100081, China
关键词:
东北地区冬季降雪气候特征降雪区划
Keywords:
Northeast Chinawinter’s snow fall clmiatic characteristicssnow fall zoning
分类号:
P42.63
摘要:
根据东北地区197个气象观测站1961-2006年冬季(12-2月)的逐日降雪量资料,采用线性趋势、小波分析、突变分析、t-检验、EOF(经验正交函数)、REOF(旋转经验正交函数)和CAST(聚类统计检验)等气候统计方法,对东北地区近45 a来冬季降雪的气候特征进行了研究。结果表明:东北地区近45 a冬季降雪呈下降趋势,每10 a下降0.2mm。降雪具有明显的阶段性,1960年代中期到1970年代中期为偏少时段,1970年代中期以后到1980年代中期为偏多时段,1980年代中期至1990年代降雪基本持平,在2000年之后降雪量有所增加。东北地区冬季降雪在45 a间始终存在着10 a左右的长周期,1980年代以后存在着6 a左右的周期,而在1970-1980年代和1990年代之后存在着4 a的短周期。EOF分析结果表明:全区一致由北向南的正变化趋势为主要模态,大值区主要位于吉林东部和辽宁西北部,西北-东南反向变化,黑龙江北部同其它区域表现出反向变化特征,也是重要的异常模态。REOF/CAST方法的区划表明:东北地区降雪主要分为4个区域,分别为辽宁-吉林东部、吉林北部-黑龙江南部、辽宁西南部和黑龙江北部地区,不同区域降雪量的变化趋势存在差异。
Abstract:
Based on the winter(December to February) daily precipitation data in 1961-2006 from the 197 meteorological observation station,using a series of climatic statistical analysis method,such as linear trend,wavelet analysis,abrupt change analysis,t-test, EOF,REOF,CAST clustering method,the temporal and spatial distribution and the regionalization of winter snow was researched for the Northeast area in past 45 years.The result shows that: winter snow reveals decreasing trend in the past 45 years as a whole in Northeast region,with rate of -0.22mm/10a.The amount of snow is distinct in different stages,.i e.on the less side from mid-1960s to mid-1970s, on the much side from 1975 to the middle of 1980s,on the normal level from the middle of 1980s to 1990’s,and on the increasing,state after 2000.There is awlays about 10 years of long-period for winter snow fall in Northeast region during the past 45 years,after the 1980s there is a cycle of 6 years or so,and in 1970-1980 and after the 1990s there is a short 4 year cycle.There is the same positive change trend in the whole region from north to south as the main mode,high value districts are mainly located in the east part of Jinlin and the north west part of Liaoning.The variation in northw estregion is opposite to that in southeast region.Compared with the other region,the northern part of Heilongjiang Province shows reverse changes which is an miportant anomaly mode.REOF/CAST analysis shows that winter snow fall in Northeast China is divided into four spatial regionsw ith diferent change trend,.i e.Liaoning-the east part of Jilin,the north part of Jilin-the south part of Heilongjiang and the south west part of Liaoning,and the north part of Heilongjiang.

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备注/Memo

备注/Memo:
收稿日期:2009-2-13;改回日期:2009-7-15。
基金项目:中国气象局新技术推广项目(CMATG2008M19);国家重点基础发展规划研究项目(973计划2007CB411506);中国气象局气候开放实验室开放课题(LCS-2006-02)共同资助
作者简介:赵春雨(1968- ),女,高级工程师,主要从事区域气候变化研究.E-mail:springrainscn@yahoo.com.cn
更新日期/Last Update: 1900-01-01