Study on Temporal and Spatial Characteristics and Prediction Model of Precipitation in Henan Province from 1960 to 2020 Based on GIS
Based on precipitation data from 117 meteorological stations in Henan Province from 1960 to 2020, GIS technology, Mann-Kendall test, Morlet wavelet analysis, and Kriging interpolation method were used to study the spatiotemporal distribution pattern of precipitation in Henan Province in the past 61 years. According to the Sixth Coupled Mode Comparison Plan (CMIP6), the precipitation situation in Henan Province in 2025 and 2035 was predicted.The results showed that the annual precipitation in Henan Province from 1960 to 2020 gradually in-creases from north to south, and the spatial distribution showed an obvious latitudinal zonality, showing the characteristics of "less in the north and more in the south". The first main cycle of the average annual precipitation in Henan Province in the past 61 years was 55 years, and the precipitation cycle was from 1971 to 2008, precipitation had the characteristic of long cycle time. The time variation trend of precipitation in Henan Province in recent 61 years showed continuous fluctuation, and the average precipitation was 584.7 mm. In Henan Province, precipita-tion increased significantly in 1964, 1985 and 2003, and decreased in 1993, 1996, 2002 and 2019. The spatial distribution of precipitation in 2025 and 2035 in Henan Province was similar to that in the past 61 years, and there was still a latitudinal zonal law of increasing precipitation from north to south.
PrecipitationTemporal and spatial characteristicsPrediction modelGISHenan Province
万方数据
维普
