北方降雨降温，南方高温持续，最近南北方温差为啥这么大？

Core Points - The recent weather contrast between northern and southern China is significant, with northern regions experiencing continuous autumn rain and temperature drops, while southern regions are enduring high temperatures above 35°C [1][2] - The temperature disparity is expected to persist in the coming days, with forecasts indicating continued rainfall in the northwest, north, and Huanghuai regions, while Jiangnan and southern areas will maintain high temperatures, with some areas reaching above 38°C [1][2] Weather Conditions - Central Meteorological Observatory reported heavy rain in central North China and ongoing high temperatures in Hunan and Jiangxi [2] - From October 10 to 13, areas such as the Sichuan Basin, eastern Northwest China, North China, and Huanghuai are expected to experience moderate to heavy rain, with localized heavy downpours [2] Influencing Factors - The weather patterns are influenced by the subtropical high-pressure system, which causes sunny and hot conditions in the southern regions while allowing for rainfall in areas on its periphery [3][5] - The strong northern cold air combined with the subtropical high-pressure system leads to significant rainfall in the northern regions, while the southern regions remain under the high-pressure system, resulting in sustained high temperatures [5]