摘要
根据全国３３６个站逐旬地面气温资料，使用ＥＯＦ分析、周期图等统计方法，揭示了最近４０年我国气温时空变化特征。研究结果表明：我国气温年际变化和变化趋势存在明显的地区、季节差异。在总趋势升高的基础上，具有前期降温、后期升温，冬季升温、夏季降温等特点。而且在气温变化趋势上存在准周期振荡。
Based on the decadely mean temperature at 336 stations in China from 1951 to1990,the statistical methods of empirical orthogonal function(EOF)and periodogramare used to analyse the characteristics of temperature in spatial and temporal variation.The facts that the interannual change and change trend of temperature have significantdifferences among different districts and seasons are revealed.It can be drawn that thetemperature decreases in the first 20 years and increases in the last 20 years. And tem-perature decreases in summer,increases in winter.The periodic oscillation in tempera-ture trend is also analysed in the paper.
出处
《应用气象学报》
CSCD
北大核心
1994年第1期119-124,共6页
Journal of Applied Meteorological Science
关键词
气温
时空变化
周期
中国
Temperature change
Spatial and temporal distribution
Period.
