Abstract：Based on the sunlight data of the dark-tube sunlight recorder(manual observation) and DFC2 photoelectric digital sunlight recorder(automatic observation) during the parallel observation period from April to June in 2019,and by using the sunshine data of calendar years from 1991 to 2020 and automatic observation sunshine data of photoelectric digital sunshine meter in 2020,this paper explores the consistency of data during parallel observation.The monthly and annual total sunshine hours automatically observed in 2020 as well as the reasons for the unusually high data are analyzed.The results are expected to provide accurate sunshine data for climate analysis and resource development,and provide reference for better promoting meteorological modernization.
2022, Vol. 39 
