摘要
基于欧洲中尺度气象预报中心(ECMWF)提供的ERA-Interim地表温度,利用经验正交函数(EOF)等方法,分析了青藏高原四季地表温度的时空变化特征.结果发现:青藏高原春、夏、冬季地表温度变化以整体型为主,并且大部地区地表温度呈现升高的趋势;秋季地表温度略有下降趋势,并且以东部和西部地表温度的反向型异常变化最为显著.此外还发现,青藏高原不同季节地表温度的异常变化具有一定的联系,其中整体型变化可以持续3个季节.
The ERA-Interim surface temperature data from European Centre for Medium Range Weather Forecasts ( ECMWF) are used to analyze the spatial and temporal variation of the seasonal surface temperature over the Tibet-an Plateau using Empirical Orthogonal Function(EOF).The results show that in spring,summer and winter,the sur-face temperature tends to increase in the whole Plateau without obvious spatial variation;while in autumn,surface temperature tends to decrease slightly in most area,and a significant opposite variation trend exists between the east-ern and western area of the Plateau. In addition,there are some definite relations between the surface temperature anomaly variations in different seasons,and the integral type can last for 3 seasons.
出处
《南京信息工程大学学报(自然科学版)》
CAS
2014年第6期558-569,共12页
Journal of Nanjing University of Information Science & Technology(Natural Science Edition)
基金
安徽省自然科学基金(090415216)
江苏省高校自然科学研究面上项目(10KJB170007)
国家自然科学基金青年基金(41005050)