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在过去的40年里,大气中的冰超度在统计上显著增加
Charilaos Benetatos1, Kostas Eleftheratos2,3, Klaus Gierens4
1Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Athens, 15784, Greece.
Scientific reports
|October 21, 2024
概括
冰的和度,对于冰云和凝结轨道至关重要,在全球范围内正在增加. 较高的湿度水平正在比平均水平上升得更快,这表明对合流形成和气候影响的条件更有利.
科学领域:
- 大气科学 大气科学
- 气候科学 气候科学
- 航空气象 航空气象学
背景情况:
- 冰的和和超是高层热带层的关键现象,影响冰云的形成和尾的持久性.
- 这些条件对于天气,气候和航空的影响至关重要.
- 它们代表了与冰相对应的高热层湿度 (UTHi) 的概率密度函数 (pdf) 的上尾.
研究的目的:
- 从1979年到2020年,分析冰和和频率的变化.
- 为了将这些变化与平均UTHi的趋势进行比较.
- 为了评估未来的环境条件,对圆形和合流的形成.
主要方法:
- 对冰层上层热带层湿度 (UTHi) 的历史数据 (1979-2020年) 的分析.
- 统计检查 UTHi 的概率密度函数 (pdf).
- 计算超出特定值 (70%,80%,90%,100%) 的平均UTHi和高UTHi值的趋势.
主要成果:
- 平均UTHi在全球范围内每十年增加约0.15%.
- 高UTHi值 (超过70%,80%,90%,100%) 显示加速增加,每十年从0.3%到0.7%不等.
- UTHi pdf的上部尾部越来越,表明超和条件的频率越来越高.
结论:
- 环境条件对于圆柱状和状轨道的形成变得越来越有利.
- 预计越来越多的冰超的频率将增强航空业对气候的影响.
- 未来的气候预测应该考虑这些观测到的上层热带层湿度趋势.
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