近40年我国气温时空变化特征

详细信息

Characteristics of Temperature in Spatial and Temporal Variation in China During Recent 40 Years

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。
- 气温变化 /
- 时空分布 /
- 周期
Abstract: Based on the decadely mean temperature at 336 stations in China from 1951 to 1990, the statistical methods of empirical orthogonal function (EOF) and periodogram are used to analysed the characteristics of temperature in spatial and temporal variation. The facts that the interannual change and change trend of temperature have significant differences among different districts and seasons are revealed. It can be drawn that the temperature decreases in the first 20 years and increases in the last 20 years. And temperature decreases in summer, increases in winter. The periodic oscillation in temperature trend is also analysed in the paper.
- Temperature change /
- Spatial and temporal distribution /
- Period