Development and Application of Jiangxi Precipitation Dataset Based on Digital Archives
In order to maximize the benefits of archive resource management and application,the data collation and selection,quality control,and data fusion of meteorological digital archives were carried out to create new growth sequence and high-resolution precipitation data files,and the precipitation data set of minute,hour and 16-period annual maximum precipitation in Jiangxi from 1954 to 2020 was established.Analysis and evaluation showed that:1)The R60 file filled the data gap of 119 sta-tion years in the A6 and A7 files,and the A6 and A7 file made up the data gap of 22 station years in the R60 file.The hourly precipitation data of 29 stations were pushed forward for more than one year after fusion.2)Since 1963,the accuracy of minute precipitation data was more than 88％,and the correction rate was about 0.2％during manual observation.After automatic ob-servation in 2005,the integrity and quality of minute precipitation data were obviously improved.3)The annual maximum pre-cipitation data set was increased by 150 min,and the data series length was pushed forward by an average of 14 years compared to the R15 file.4)The annual maximum precipitation processes of 15 periods were selected randomly by computer and artificial,the coincidence rate of which is 89％,and the average correlation coefficient is 0.95.The data set improves the integrity and quality of precipitation data in Jiangxi,and the newly selected annual maximum of 5-20 min is more objective and accurate,making up for the shortage of manual selection.
万方数据
维普
