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近几十年来,陆地上午以下温度的反向不对称变暖发生在陆地上
Ziqian Zhong1,2, Bin He3, Hans W Chen2
1State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing, 100875, China.
Nature communications
|November 8, 2023
概括
全球变暖正在扭转趋势:由于云层覆盖面减少,最高气温的上升速度快于最低气温. 这种日间变暖转变影响气候模式,需要进一步研究.
科学领域:
- 气候科学 气候科学
- 大气物理学 大气物理学
- 全球环境变化 全球环境变化
背景情况:
- 20世纪出现了"昼间不对称的变暖",夜间温度上升的速度快于白天温度.
- 最近全球变暖,干旱和热浪改变了既定的变暖模式.
研究的目的:
- 重新评估日下温度模式和日间温度范围趋势.
- 调查日间温度趋势最近变化背后的驱动因素.
主要方法:
- 分析日下温度数据以评估变暖速度.
- 温度趋势与云层和太阳辐射变化的相关性.
主要成果:
- 观察到每日最高气温 (Tmax) 的升温速度显著增加.
- 每日最低气温保持相对稳定,导致白天升温趋势的逆转.
- 昼间温度范围的扩大归因于降低的云层和增加的太阳辐射.
结论:
- 最近的气候趋势显示,日间不对称的变暖正在逆转,Tmax变暖正在加剧.
- 降低云层是推动太阳辐射增加和Tmax变暖的关键因素.
- 迫切需要进一步研究最近的温度趋势及其更广泛的地球系统影响.
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