漯河46年气温变化特征及城市化的影响

Characteristics of Temperature Variation and Impact of Urbanization in Luohe from 1962 to 2007

利用漯河、临颍、舞阳3站1962 ～ 2007年的气温资料,运用相关系数和一元回归方法,分析了气温变化趋势和与时间变化的关系,及以漯河站为代表的市区、以临颍站和舞阳站为代表的野外之间差异的演变趋势特征,通过t检验法检验其显著性.结果表明,3站的年平均气温变化与时间变化是密切相关的,其中大多数月份与时间变化也是密切相关的;少数月份与时间演变呈显著的反相关,主要分布在夏季;多数月份与时间演变呈显著的正相关,冬季尤为突出;漯河的变暖幅度大于临颍和舞阳;而变冷的幅度小于临颍和舞阳.气温变化主要因素是气候自身变化,城市化影响是次要因素,但也是显著的不可忽视的,在预报与服务中必须考虑.

Based on the temperature data of Luohe, Linying and Wuyang meteorological station from 1962 to 2007, correlation coefficients and regression method were used, the change trend of the average temperature and the difference between Linying and Luohe, Luohe and Wuyang were analyzed, t-test was adopted for the significance test. The results showed that annual average temperature and most of the monthy average temperature were positively correlated with time change, especially in winter; a few monthly average temperature were negatively cor- related with time change, especially in summer; Luohe warming amplitude was greater than that of Linying and Wuyang, Luohe cooling ampli- tude was less than that of Linying and Wuyang. Climatic change is a main factor of the temperature change, urbanization is a secondary factor, but its influence must be considered in the forecasting and service.