近50年湖北省气温、降水量变化趋势的时空分布特征研究

Research on the spatio-temporal distribution characteristics of temperature and precipitation variation in Hubei Province in the past 50 years

本文利用中国气象科学数据共享网提供的湖北省23个气象站点近50年来日值气温、降水数据,采用线性回归法、反距离加权插值法、线性倾向率法,分析湖北省气候变化的时空分布特征。结果显示:(1)近50年来,湖北省年平均降水量和年平均气温呈上升趋势;(2)近50年来,湖北省降水量的季节变化较复杂,气温的四季变化除夏季较平稳外,其他三个季节均呈上升趋势;(3)湖北省年平均降水量自东南向西北递减,降水的高值中心分布于恩施和英山,整个区域的降水量呈增多趋势,武汉是降水增多最明显的地区;(4)湖北省年平均气温由东部向西部递减,气温的高值中心分布在巴东和阳新,总体来看,湖北省各地气温呈上升趋势,武汉和襄樊是气温上升最明显的区域。

This paper used the daily temperature and precipitation data of nearly 50 years from 23 meteorological stations in Hubei Province provided by the China Meteorological Science Data Sharing Network to analyze the spatio-temporal distribution characteristics of climate change in Hubei Province.The results indicated that:(1)In the past 50 years,the average annual precipitation and annual average temperature in Hubei Province shown an upward trend;(2)In the past 50 years,the seasonal changes of precipitation in Hubei Province were more complicated;the seasonal temperature shown an upward trend except for summer;(3)The average annual precipitation in Hubei Province decreased from southeast to northwest.The high-value centers of precipitation were distributed in Enshi and Yingshan.The precipitation in the whole area shown an increasing trend.Wuhan is the area with the most obvious increasd in precipitation;(4)The average annual temperature in Hubei Province decreases from east to west,and the high temperature centers were distributed in Badong and Yangxin.Overall,the temperature in Hubei Province was rising,and Wuhan and Xiangfan were the regions with the most obvious temperature increases.