“湿冷魔法”失效了？ 长沙1月上中旬暖如常年春季

Group 1 - The core viewpoint of the articles highlights the unusual weather patterns in Hunan province, with temperatures significantly higher than the historical averages for this time of year, indicating a warm spell that resembles spring rather than winter [1][2]. - The Central Meteorological Station forecasts that the average temperature in southern regions, including Hunan, will be 1-2°C above the normal levels for the next ten days, with maximum temperatures reaching up to 18°C in Changsha on January 10, which is 9°C higher than the average for this period [1]. - The weather in Hunan will be predominantly sunny to partly cloudy over the next three days, with a notable drop in temperatures during the early morning and late evening, where local minimums may fall below 0°C [1]. Group 2 - The significant day-night temperature variation is attributed to the influence of cold, dry air from Siberia, which leads to clear and dry weather during the day, allowing for heating from sunlight, while the lack of cloud cover at night results in rapid cooling [2]. - Public advice includes dressing in layers to adapt to the large temperature swings, which is referred to as "onion-style" dressing, allowing for flexibility in clothing choices to manage the cold and warmth effectively [2].