1632年华北地区暴雨洪涝事件研究OA北大核心CSTPCD

Based on the historical documents the 1632 North China rain and flood event was reconstructed with the rainfall,water distribution and disaster.The spatial and temporal extent of the heavy rainfall event in Henan province in August 1632 was identified and compared with the extreme precipitation event in Henan province in 2021,which is supported by instrumental records.The large-scale precipitation in North China in 1632 began on July 17th.From June 18th to November 11th,there were records of prolonged rainfall in different areas of the entire North China region.This prolonged precipitation,along with several instances of heavy rainfall,resulted in severe flooding in the Huanghuai region.The flooding was so severe that it caused the Yellow River to overflow and collapse,leading to significant socio-economic impacts.Through analyses of the precipitation and flooding process,local precipitation and water brought by external sources were differentiated.In 1632,the eastern monsoon region of China experienced a drought-flood pattern,with partial flooding in southern and northern China and partial drought in the lower reaches of the Yangtze River.A comparison between the torrential rainfall and flooding in North China in 1632 and the extreme precipitation event in Henan in July 2021 revealed several similarities.Both events saw heavy precipitation concentrated along the eastern foothills of the Taihang Mountains and the east side of the Funiu Mountains,influenced by topography.In 2021,the center of heavy precipitation was further north.The extreme precipitation in Henan in 2021 was linked to Typhoon"Fireworks",with similar typhoon activity recorded in Jiangsu and Zhejiang before and after the 1632 event.Both years were affected by pre-La Niña events,leading to flooding in North China.Moving forward,it is crucial to focus on La Niña and typhoon events,enhance heavy rainfall forecasting and disaster warning capabilities,and prioritize urban flood prevention to prevent events like the"7∙20"Zhengzhou urban flooding.These findings can inform future flood control strategies.