多时间尺度上研究中国近代气温变化规律

应用MODIS数据反演了过去10年中国气温及气温的空间分布特征,并基于气象数据重建了过去60年中国城市、郊区、农村及气象台周边地区冬季气温距平的时间序列,从多时间尺度上,详细分析了20世纪中国气温变化规律。结果发现：气象台气温记录可能受城市热岛效应影响;60年来我国气温呈震荡波动,波动小周期约为7a;从10年尺度上看,近60年来,年代际气温增加幅度最大的是20世纪90年代,21世纪初气温虽然仍处于暖期,但已经出现下降趋势。

Study on the 60-year's temperature variation in China on multiple time scales

Firstly,the temperature characteristics and its spatial distribution are obtained by the inversion of MODIS data in China over the past 10 years.Secondly,the winter temperature anomaly time series of the urban,suburban,rural and meteorological observatory＇s peripheral areas in China are reconstructed over the past 60 years based on meteorological data.Thirdly,a detailed analysis of the temperature changes of 20th century in China has been carried out in a multi-time scale.It is concluded that meteorological observatory＇s temperature records may be affected by urban heat island effect;Chinese temperature fluctuated over the past 60 years and the small fluctuated period is about 7 years;In the decade-scale,the biggest decadal temperature increase is 1990s;Although the early 21st century＇s temperatures is still in the warm period,but it has emerged the downward trend.