干旱区研究2012，Vol.29Issue(4)：648-653,6.
1971-2010年东北三省平均地面风速变化
Change in Surface Mean Wind Speed of Northeast China during the Period of 1971 -2010
摘要
Abstract
In this paper, the data of monthly surface wind speed in northeast China during the period from 1971 to 2010 were used to study the temporal and spatial change of average surface wind speed in three provinces （Liaoning, Jilin and Heilongjiang） in northeast China. The results are as follows： （1） For the entire period （40 years）, the mean surface wind speed in -0.23 m . s-1. （10 a）-1 these three provinces during the 40-year period was significantly decreased with a rate of During the 30-year periods of 1971 -2000 and 1981 -2010 as well as the 20-year period of 1991 -2010, mean surface wind speed was in a significant decrease trend with rates of -0. 25 m . s-1 . （10 a） -1, -0.20 m . s-1. （10 a） -1 and -0.17 m . s-1 . （10 a） -1 , and the values were all statistically signifi- cant at 0. 001 confidence level; （2） For the entire study period, the average seasonal surface wind speed was signifi- cantly decreased, and the decrease was the most significant in spring, then in winter, fall and summer. All seasonal trends for the whole period were significant at 0.001 confidence level. The average monthly surface wind speed was also consistently decreased; （3） Average annual wind speed in northeast China in recent 40 years was significantly decreased except that at one or two stations. During recent 20 years, the average surface wind speed was in a de- crease trend in most areas, but the sites with significant decrease trend were in a reduction, and those with increase trend were in an increase, especially in the central and western oarts of northeast China in recent 10 vears.关键词
地面风速/气候变化/年代变异/东北三省Key words
surface wind speed/climate change/decadal variability/northeast China分类
农业科技引用本文复制引用
金巍,任国玉,曲岩,刘晓玲..1971-2010年东北三省平均地面风速变化[J].干旱区研究,2012,29(4):648-653,6.基金项目
国家公益性行业专项 （）
国家科技支撑计划课题（2007BAC29802）和中国气象局2010年气候变化专项（062700s010c01）资助 （）
