Group 1 - The article discusses the warming and humidification trend in northern China, suggesting that while there are indications of a shift towards a "southern" climate, further research is needed to confirm this [1][3] - Since July, northern China has experienced multiple rounds of heavy rainfall, with 13 instances of heavy rain reported, which is 5 more than the average for the same period [1][2] - The early onset of the rainy season in North China, starting on July 5, is noted as the earliest since 1961, indicating significant climatic changes [2][3] Group 2 - The abnormal atmospheric circulation, particularly the west Pacific subtropical high, is identified as a key factor contributing to the increased rainfall in northern regions [2][3] - The article highlights the relationship between global warming and the northward movement of the subtropical high, which is believed to be pushing warm, moist air into northern China [3] - The World Meteorological Organization reports that climate-related disasters have increased fivefold over the past 50 years, with China being particularly sensitive to climate change [3][4] Group 3 - The article emphasizes the need for a comprehensive disaster risk management approach, including government leadership, early warning systems, and public participation to address extreme weather events [4][5] - It mentions the United Nations' initiative for early warning systems to protect populations from climate-related disasters by 2027, showcasing a global effort to enhance climate resilience [5]