唠“科”话｜明明太阳已经落山 为何体感更热？

Core Viewpoint - The phenomenon of "nighttime high temperatures" is increasingly prevalent due to various atmospheric conditions and human activities, leading to health risks, particularly in urban areas [1][3][5]. Group 1: Atmospheric Conditions - Strong daytime solar radiation heats the ground, which then releases heat at night through long-wave radiation, but the cooling rate is influenced by atmospheric conditions [3]. - Increased cloud cover at night can trap heat, preventing effective cooling and resulting in slower temperature drops [1][3]. Group 2: Human Activities - Urban environments with dense buildings and limited vegetation act as "heat storage" systems, exacerbating nighttime temperatures [3][5]. - Human activities such as traffic and air conditioning contribute to elevated nighttime temperatures, making urban areas significantly warmer than rural ones [3][5]. Group 3: Health Risks - High nighttime temperatures can lead to health issues, including heatstroke and cardiovascular diseases, particularly in high-humidity conditions [5][6]. - Vulnerable populations, especially the elderly, are at greater risk due to their reduced ability to regulate body temperature [6]. Group 4: Recommendations - To mitigate the effects of nighttime high temperatures, it is advised to improve air circulation indoors and stay hydrated, regardless of thirst [5]. - Special attention should be given to vulnerable groups, such as the elderly, who may not perceive temperature changes effectively [6].