With the series of annual and seasonal temperature during 1957 – 2001 in Dongguan, Guangdong, the statistical characteristic and power spectrum and secular trend and sudden change phenomena are computed in this paper...With the series of annual and seasonal temperature during 1957 – 2001 in Dongguan, Guangdong, the statistical characteristic and power spectrum and secular trend and sudden change phenomena are computed in this paper. From the results it is known that (1) the temperatures have obvious characteristics of monsoon climate but do not have normal distribution, showing biased distribution of high or low kurtosis; (2) over the recent half- century, the temperatures tend to rise, specially in the last 10 years, in which mean temperature have quickly ascended by about 1.5°C, and except for the spring, there were sudden change of seasonal temperature rising from the 1980’s to 1990’s, which really reflected the influence of developing and opening and urbanization on Dongguan temperature; (3) except for the spring, the temperature of other seasons show some oscillatory periods in Dongguan and some of them also include long-term variation trends.展开更多
Based on the observation data of temperature from Yibin station and other five surrounding meteorological stations in 1961-2009,temperature variation in Yibin station affected by urbanization was studied.The results s...Based on the observation data of temperature from Yibin station and other five surrounding meteorological stations in 1961-2009,temperature variation in Yibin station affected by urbanization was studied.The results showed that urban heat island effect in Yibin became more and more strong,and it had great influence on minimum temperature and little influence on maximum temperature,with obvious daily variation.In addition,heat island effect was more obvious at night than daytime,while temperature went up most greatly in summer,and next came spring,but it was weakest in winter.Compared with 1960s,the average warming rate of temperature at 02:00,08:00,14:00 and 20:00,daily average temperature,maximum temperature and minimum temperature reached 0.483 2,0.168 0,0.001 4,0.209 8,0.215 4,-0.013 4 and 0.333 2 ℃ in 40 years,respectively.Moreover,regional background had certain effect on urban climate,and the influence of urban heat island effect on various meteorological stations was distinct in different stages of urbanization process.展开更多
文摘With the series of annual and seasonal temperature during 1957 – 2001 in Dongguan, Guangdong, the statistical characteristic and power spectrum and secular trend and sudden change phenomena are computed in this paper. From the results it is known that (1) the temperatures have obvious characteristics of monsoon climate but do not have normal distribution, showing biased distribution of high or low kurtosis; (2) over the recent half- century, the temperatures tend to rise, specially in the last 10 years, in which mean temperature have quickly ascended by about 1.5°C, and except for the spring, there were sudden change of seasonal temperature rising from the 1980’s to 1990’s, which really reflected the influence of developing and opening and urbanization on Dongguan temperature; (3) except for the spring, the temperature of other seasons show some oscillatory periods in Dongguan and some of them also include long-term variation trends.
基金Supported by Sichuan Meteorology Project of Sichuan Meteorological Bureau(2010-Focus-04)~~
文摘Based on the observation data of temperature from Yibin station and other five surrounding meteorological stations in 1961-2009,temperature variation in Yibin station affected by urbanization was studied.The results showed that urban heat island effect in Yibin became more and more strong,and it had great influence on minimum temperature and little influence on maximum temperature,with obvious daily variation.In addition,heat island effect was more obvious at night than daytime,while temperature went up most greatly in summer,and next came spring,but it was weakest in winter.Compared with 1960s,the average warming rate of temperature at 02:00,08:00,14:00 and 20:00,daily average temperature,maximum temperature and minimum temperature reached 0.483 2,0.168 0,0.001 4,0.209 8,0.215 4,-0.013 4 and 0.333 2 ℃ in 40 years,respectively.Moreover,regional background had certain effect on urban climate,and the influence of urban heat island effect on various meteorological stations was distinct in different stages of urbanization process.
