我国西部温度和树轮的关系及转移函数

THE RELATION BETWEEN TEMPERATURE AND TREE RING IN WESTERN CHINA AND THEIR TRANSFORMATION FUNCTION

本文对我国西部树轮指数和温度场进行EOF展开,在此基础上,用典型场和谱分析方法讨论了树轮指数、温度空间场及时间场的特征、结构,结果表明:我国西部树轮和温度在空间和时间上都有着较好的对应关系。最后,用稳健回归方法研究了树轮和温度的转移函数。

Tree ring indexes and temperature in western China areexpanded by the EOF method. On this basis, the features and structuresof the space field and time coefficients of tree ring indexss and temper-ature are examined by means of the canonical field and spectrum anal-ysis. Results indicate a close relation in both space and time betweentree ring indexes and temperature in western China. In the end, thetransformation function of time coefficients between tree ring indexesand temperature is derived by robust regression.