干旱区地理2018，Vol.41Issue(1)：1-8,8.
近55a辽宁省风速时空变化特征分析
Temporal and spatial variation characteristics of wind speed in Liaoning Province in recent 55 years
摘要
Abstract
The analysis of temporal and spatial evolution characteristics of wind speed is one of the main aspects of climate change research.It is of great significance in the assessment of climate anomalies and the prediction and forecast of wind damage.Taking Liaoning Province as the study area,the daily meteorological data collected by 23 meteorological stations in the province from 1960 to 2014 were analyzed using linear regression and Mann-Kendall methods to reveal the temporal pattern of wind speed.Based on the inverse distance weight interpolation and surface analysis module in ArcGIS software,the spatial analysis of wind speed change in the study area was carried out.The correlation between wind speed and air temperature and air pressure was investigated by means of Pearson correlation test.The results showed that:(1) From time perspective,the average wind speed in Liaoning Province has been declined significantly since 1960.Within a year,the trend appeared as "double-peaked" with an average decreasing rate of 0.559 m · s-1 · (10a)-1 and the interannual decline rate is 0.22 m · s-1 · (10a)-1.The four seasons in a year was listed in the sequence as follows based on descending order of the decreasing rate value:spring,winter,autumn and summer;(2) With regard to spatial pattern,the spatial distribution had the characteristics with the central part of the province having the highest decreasing rate and both the west side and east side the lower value.They all had a small seasonal difference;(3) The decrease of wind speed in Liaoning Province is related to the change of temperature and air pressure.There is a negative correlation between wind speed and air temperature with the correlation coefficient being-0.588 at the 0.01 significance level and a positive correlation between wind speed and air pressure with the correlation coefficient being 0.723 at the same significance level.关键词
平均风速/年际/四季/时空分布特征/相关性Key words
mean wind speed/interannual/four seasons/temporal and spatial distribution/correlation分类
天文与地球科学引用本文复制引用
曹永强,郭明,刘思然,郑爽..近55a辽宁省风速时空变化特征分析[J].干旱区地理,2018,41(1):1-8,8.基金项目
国家自然基金(51579126,51779114) （51579126,51779114）
中国气象局干旱气候变化与减灾重点实验室开放基金(IAM201511) （IAM201511）
