近日，广西迎来2024年首个‘回南天’，多地出现墙面、地板‘冒汗’现象，水珠密布，空气湿度飙升至90%以上。‘回南天’是华南地区特有的天气现象，通常出现在冬春交替之际，当冷空气退去、暖湿气流迅速反扑时，室内物体表面温度仍较低，暖湿空气遇冷凝结成水珠，导致墙壁、窗户甚至地面‘出汗’。这种高湿环境不仅让人感觉闷热不适，还容易引发衣物发霉、电器短路、地板打滑等生活问题。气象专家提醒，应对‘回南天’应紧闭门窗，减少室外湿气进入；使用除湿机、空调除湿功能或放置干燥剂可有效降低室内湿度；同时注意防滑防潮，保障居家安全。随着全球气候变暖，此类极端潮湿天气可能更加频繁，公众需提高防范意识，科学应对季节性气候挑战。
Recently, Guangxi experienced its first ‘Hui Nan Tian’ (literally ‘Return South Day’) of 2024, a weather phenomenon characterized by walls and floors appearing to ‘sweat,’ with condensation forming dense droplets and indoor humidity soaring above 90%. Common in southern China during the transition from winter to spring, ‘Hui Nan Tian’ occurs when cold air retreats and warm, moist air masses rush in. Since indoor surfaces like walls and floors remain relatively cool, the warm, humid air condenses upon contact, creating the illusion that buildings are ‘sweating.’ This high-humidity environment not only causes discomfort but also leads to mold growth on clothes, electrical malfunctions, and slippery floors. Meteorologists advise residents to keep windows and doors closed to block external moisture, use dehumidifiers or air conditioners with dehumidifying functions, and place desiccants indoors to reduce humidity. Additionally, caution against slipping and moisture damage is essential for home safety. As global warming intensifies, such extreme humidity events may become more frequent, requiring greater public awareness and adaptive strategies to cope with seasonal climate challenges.
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