Research on the Deep Analysis of the Law of Climate Change in the Past 70 Years in Changde City
Climate change is currently a hot topic of global concern.In order to further study the characteristics of climate change over the past 70 years in Changde City,the six climate factors of minimum air temperature,maxi-mum air temperature,average air pressure,average air temperature,average vapor pressure and average relative hu-midity in the monitoring area of the station from 1951 to 2020 are selected as analysis objects,and time series analy-sis,variance analysis and linear regression methods are used to analyze the situation of climate change over the past 70 years in Changde City.Research results show that in the past 70 years,various climate factors in Changde City fluctuated up and down in time,minimum air temperature,maximum air temperature and average air temperature showed an overall upward trend,average air pressure,average vapor pressure and average relative humidity showed a downward trend,and that the decline range of average relative humidity was higher than that of other climate fac-tors.
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