Analysis of Characteristics of Temperature Changes in Liupanshui in Recent 50 Years
【摘要】：[Objective] The aim was to study the characteristics of temperature changes in Liupanshui in recent 50 years. [Method] Based on the monthly temperature data from 3 observational stations in Liupanshui from 1960 to 2009 and by employing the linear method and Mann-Kendall method, features and abrupt changes of temperature in Liupanshui were discussed. [Result] The results indicated the temperature in Liu Panshui increased obviously in recent 50 years at a rate of 0.096 ℃/10 a. Average temperature in spring was decreasing, but was increasing in summer, autumn and winter at different rate. The average temperature changed the most in winter, followed by summer and autumn and changed the least in spring. The temperature changes were not distinct before the early 1980s. Temperature increased significantly after 80s, having distinct waving nature and several mutation points. The distinct mutation point appeared in 1978 and the annual average temperature increased significantly after 1978. There was no obvious mutation of temperature in spring; the mutation points of temperature in summer, autumn and winter were 1978, 1982 and 1985. [Conclusion] The study provided reference for the short term forecast of climate in Liupanshui City.