Air Temperature Changes and Urbanization Contri- bution Ratio in Kunming City in Recent 50 Years

• 作者: HE Yun-ling LU Zhi-hai
• 来源期刊: 气象与环境研究：英文版
• 学科: 地球科学
• 关键词: 城市化进程 空气温度 昆明市 气象观测站 年平均温度 比例 城市热岛效应 城市化影响
• 年，卷（期）: 2012,（1）
• 页码范围: 41-44
• 页数: 4页
• 分类号: P41

摘要

[Objective] The aim was to study air temperature changes and urbanization contribution ration in Kunming City in recent 50 years.[Method] The observation data of air temperature series from Kunming station and other four surrounding meteorological stations were used to investigate air temperature variation in Kunming station affected by urbanization during 1960-2009.[Result] The trend slope of mean annual temperature was 0.402 ℃/10 a in Kunming station and 0.103 ℃/10 a in other four surrounding meteorological stations,and the increasing magnitude of air temperature in Kunming station was more than 3 times that of average global warming in the past 50 year.The effect of urbanization on mean annual temperature in Kunming station started from 1990.During 1990-1994,the increasing contribution rate of urbanization to air temperature in Kunming station was less than 40%.From 1995 to 2009,the contribution ratio was more than 50%,up to about 60% in all seasons.Urban heat island effect in Kunming station was intensified with the development of urbanization.In addition,the warming rate caused by urban heat island effect in Kunming station was the greatest in dry season,followed by mean annual temperature,and it was the weakest in rainy season.[Conclusion] The study provided theoretical foundation for future research.