Abstract：:The article uses the precipitation data of 20 township meteorological automatic observatories in Zheng'an County from 2011 to 2022 to draw a spatial and temporal distribution characteristic map of precipitation.It uses statistical comparative analysis and combines topographic characteristics to explore the relationship between the time and spatial distribution characteristics of heavy precipitation in Zheng'an and the terrain.The results show that there is a high possibility of extreme heavy precipitation at night during the Zheng'an flood season.The average annual precipitation in the highaltitude areas in the northwest is relatively abundant.The distribution of days of different precipitation levels is correlated with the distribution of the terrain,and the distribution of the heavy precipitation centre is related to the difference in altitude of the terrain.Complex terrain affects the precipitation area and intensity,especially in the northwest,southwest and eastern high terrains,where cold andwarm air currents convergedon their windward slopes and stay for a long time,resulting in strong precipitation weather processes on windward slopes,with large cumulative rainfall and high risk of meteorological disasters.
蒋兰, 罗中贻, 肖蕾, 林雪飞, 钱玲, 汪亚非, 张信才. 正安汛期强降水时空分布特征及地形影响分析[J]. 气象水文海洋仪器, 2026, 43(5): 125-127.
Jiang Lan, Luo Zhongyi, Xiao Lei, Lin Xuefei, Qian Ling, Wang Yafei, Zhang Xincai. Analysis of the spatial and temporal distribution characteristics and terrain impact of strong precipitation during the Zheng'an flood period. Meteorological Hydrological and Marine Instrument, 2026, 43(5): 125-127.
2026, Vol. 43 
