山东省聊城市夏季极端最高气温异常天气变化特征分析

摘要

对山东省聊城市1961—2010年夏季极端最高气温变化采用最小二乘法进行倾向性分析。研究结果显示，聊城市夏季极端最高气温具有明显的阶段性特征，20世纪60年代呈现升高趋势，20世纪70年代至90年代中期整体呈下降趋势，之后气温又进入升高期。%The tendency analysis on highest temperature in summer changes of Liaocheng City in Shandong Province between 1961 and 2010 was conducted by Least Squares . The results showed that the highest temperature of Liaocheng City in summer had obvious stage characteristics .It presented an in-creasing trend in the 1960s, and it pre-sented an overall downward trend into the mid-1970s to the 1990s . And then the temperature got into the elevated stage .