Changes of Mean and Extreme Temperatures in Tianjin in Recent 100 Years
近100年天津平均气温与极端气温变化

Mean temperature,mean maximum and minimum temperature series in Tianjin were calculated using the observed data of daily maximum and minimum temperatures during 1910-2009,as well as the several extreme temperature series,including high and low temperature thresholds,the longest warm day and cold night durations,and frost days.Trends and abrupt changes were examined for these temperature series using the linear regression and Mann-Kendall test.It is indicated that the mean temperature in Tianjin significantl...