Temporal and Spatial Analysis of Temperature and Precipitation in Henan Province

Using the monthly precipitation data of 15 national basic meteorological stations in Henan Province from 1960 to 2021, the MK abrupt change test and EOF analysis were used to analyze the trend of temperature and precipitation. The results show that: (1) The temperature and precipitation in Henan Province from 1960 to 2021 show an overall upward trend. (2) The M-K test of annual temperature shows that the temperature rose significantly in the mid-1990s. (3) EOF mode 1 can better reflect the main spatial and temporal features of Henan Province, with the temperature type showing a cold (warm) pattern throughout the province. (4) The precipitation in Henan Province shows two types of precipitation throughout the year: abundant or scarce precipitation. The high value area is located in the southeast region, and the fluctuation in the southeast region is higher than that in the northwest region, with a high degree of change, and the central region is a transition area.