摘要
通过对四川省什邡市新、旧测站同期气温观测资料对比分析可以看出,新旧测站之间气温有明显的正温差,旧站气温存在城市热岛效应。其热岛强度表现为白天大于夜间、春季的4月最强、冬季的1月次之、夏季的7月最弱。热岛效应使最高气温上升,日较差增大,旧站气温偏高。经统计检验新旧站气温存在显著的正相关,但两站气温有显著差异,通过一元线性回归方程订正,可以得到具有代表性、连续性、比较性的气温统计资料。
By analyzing temperature data synchronously observed by the new and old meteorological observation stations in Shifang,it is found that temperature in the old station was higher than that of new one because of urban heat island effect, which was more obvious in the daytime than at night, more obvious in April of spring, followed by January of winter, and July of summer is not obvious. The heat island effect increased maximum temperature and diurnal temperature range,which made the old station temperature higher than the new station. The analysis shows that temperature in the old station has a positive correlation with the new one; meanwhile, there are obvious differences between temperatures in the old and new stations. Through the correction of linear regression equation, the data with representative, continuity and comparability can be obtained.
出处
《气象水文海洋仪器》
2012年第1期121-124,共4页
Meteorological,Hydrological and Marine Instruments
关键词
气象观测
城市热岛效应
对比分析
meteorological observation
urban heat island effect
comparative analysis
