安徽农业科学2017，Vol.45Issue(23)：182-185,4.
西北地区年平均地表温度时空特征分析
Analysis of Spatial and Temporal Characteristics of Annual mean Surface Temperature in Northwest China
摘要
Abstract
On basis of the monthly surface temperature data collected from 136 observational stations in Northwest China(NWC) during 1960-2004,the methods of principal component analysis,rotated principal component analysis and wavelet analysis were used to analyze the spatial and temporal characteristics of annual mean surface temperature in NWC.The results showed that the annual mean surface temperature in NWC in the past 45 years was obviously increasing,and the spatial distribution of the warming was more complicated.High temperature zone and low temperature area staggered distribution,the annual mean surface temperature decreased in Shanxi,Gansu and northeast and south of Xinjiang and increased in Qinghai and north of Xinjiang.The empirical results showed that the first eigenvector showed the consistent high or low of annual mean surface temperature in entire NWC,and the second eigenvectors showed the annual mean surface temperature in eastern NWC are opposite with western NWC,vice versa;the third eigenvectors showed the annual mean surface temperature in mid NWC were opposite with eastern and western NWC,respectively.Rotational experience orthogonal decomposition revealed that the surface temperature abnormal area could be divided into fifth sub regions:eastern NWC,northern NWC,mid NWC,southern Xinjiang and mid Xinjiang.The eastern NWC,mid NWC and mid Xinjiang showed high-low-high process,northern NWC and southern Xinjiang were the same increase trend.All the sub regions exist 8 ～ 16 years or 16 ～ 32 years periodic oscillations,only the northern NWC exist 4 ～ 8 years periodic oscillation.关键词
地表温度/时空特征/西北地区Key words
Land surface temperature/Spatial and temporal characteristics/Northwest China分类
农业科技引用本文复制引用
陈笑笑,孙必云,华维..西北地区年平均地表温度时空特征分析[J].安徽农业科学,2017,45(23):182-185,4.基金项目
国家自然科学基金项目(41405069,91537214) （41405069,91537214）
四川省教育厅重点项目(16ZA0203) （16ZA0203）
成都信息工程大学中青年学术带头人科研基金项目(J201516) （J201516）
引进人才启动基金项目(KYTZ201517). （KYTZ201517）
