商丘市气温日较差变化特征分析  

Characteristic Analysis of the Daily Temperature Range in Shangqiu City

作　　者：汤新海 杨淑萍[1] 汤景华 王海翔 

机构地区：[1]睢县气象局,河南睢县476900 [2]商丘市气象局,河南商丘476000

出　　处：《气象与环境科学》2008年第4期58-61,共4页Meteorological and Environmental Sciences

基　　金：河南省科技厅项目"河南省高影响事件变化规律及科学预防措施研究"(0624460004)资助

摘　　要：利用商丘市8站1961—2006年逐日最高、最低气温资料,计算并分析了商丘市年、季及月气温日较差的线性变化趋势,结果表明:年最低气温呈明显上升趋势,最高气温上升趋势不显著,气温日较差呈显著减小趋势;春、夏、冬季季平均气温日较差均呈减小趋势,其中春季和冬季的减小趋势显著,秋季呈弱的增加趋势;全年有10个月的气温日较差呈减小趋势,其中1、3、5、8月气温日较差显著减小,1月减小幅度最大。城市化发展对气温日较差变化有一定影响,距城区较近的台站平均气温日较差显著减小,而距城区较远的台站气温日较差减小趋势不显著。Daily mean maximum and minimum temperature in 8 stations from 1961 to 2006 in Shangqiu were analyzed, and the linear trends of change of the daily temperature range in year, season and month were calculated and analyzed. The results are as follows： the mean minimum temperatures are significantly increasing, but the mean maximum temperatures are insignificantly increasing, therefore, the daily temperature range is obviously decreasing. The mean daily temperature ranges are decreasing in spring, summer and winter, the mean daily temperature ranges being slightly increasing in autumn. There are ten months with the mean daily temperature ranges decreasing, but the decrease is obvious in January, March, May and August, with the biggest deceasing rate in January. Urbanization progress has a great influence on the daily temperature range, the stations which in near city area are significantly decreasing, while those in far city area have insignificant decreasing tendency.

关 键 词：最高气温 最低气温 气温日较差 气候变化 

分 类 号：P467[天文地球—大气科学及气象学]