Abstract:
Conventional meteorological statistics methods were used to figure out the annual temperature,sunshine hours,precipitation and precipitation days at Jinhua Meteorological Observatory from 1968 to 2020,and to analyze the characteristics of climate change in Jinhua region and the sensitive areas for extreme climate.The results showed that:(1)Under different climate states,the average temperature and precipitation in Jinhua showed increasing trends,and were the most obvious in states Ⅲ and Ⅳ,while sunshine hours and precipitation days showed decreasing trends,and the most obvious in states Ⅱ and Ⅳ;however,with the changes of the Ⅱ-Ⅳ state,the increase of average temperature,the decreases of sunshine hours and the number of precipitation days all weakened,and the increase of precipitation first increased and then decreased.(2)The average temperature in Jinhua was high in Lanxi and was low in Pujiang,and the sunshine hours were more in Yiwu but less in Yongkang and Lanxi.The precipitation was more in Wuyi and Pujiang but less in Dongyang and Yiwu,the precipitation days were more in the south but less in the north.With the change of climate state,the above four elements showed a significant trend of increasing,decreasing,increasing,and decreasing,respectively.(3) Due to the change of climate state,the average temperature level in Jinhua area moved from low to high,the level of sunshine hours moved from high to low,the precipitation level moved back and forth from 4 to 3,and there was insignificant change in the level of precipitation days.(4) With the change of climate state,the whole Jinhua area except Lanxi was sensitive areas for extreme temperature.Lanxi and Yiwu were sensitive areas for extreme sunshine hours,and there were basically no sensitive areas for extreme precipitation and precipitation days.