在COVID-19飞行减少期间,美国西南部的云辐射效应发生显著变化
Jingyu Wang1, Yun Lin2, Xianfeng Wang3
1National Institute of Education, Nanyang Technological University, Singapore 637616, Singapore.
The Science of the total environment
|November 22, 2023
概括
由于COVID-19大流行,航空旅行减少了,这为研究飞机引起的云 (AICs) 提供了机会. 虽然大多数地区没有变化,但美国西南地区的雪花云较少,可能是由于AICs减少.
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:
- 飞机引起的云 (AICs) 是人为的云,模仿自然的云.
- AICs通过改变短波 (SW) 和长波 (LW) 辐射来影响全球辐射预算.
- 随着COVID-19大流行,全球空中交通大幅减少,创造了一个独特的研究机会.
研究的目的:
- 调查COVID-19大流行期间减少的飞机诱导云 (AIC) 的气候影响.
- 分析云层覆盖的变化和辐射效应,以应对空中交通减少.
- 建立用于AICs未来气候建模的观察基准.
主要方法:
- 在COVID-19流行病减少飞行之前和期间,对状云层覆盖和辐射效应进行比较分析.
- 检查主要地区的气象条件,包括大气压和湿度.
- 专注于航空交通大幅下降的地区,如西欧和邻近的美国.
主要成果:
- 特别是在美国西南部观察到云的显著减少.
- 这种减少与短波 (SW) 和长波 (LW) 云辐射效应的显著变化相关.
- 美国西南部大气中的异常高压和相对较低的湿度可能抑制了形的形成,混了直接的AIC影响评估.
结论:
- 该研究强调美国西南地区是空中交通减少可能影响了雪花云层覆盖的地区.
- 观察到的异常为验证模拟AIC影响的气候模型提供了有价值的数据.
- 量化减少AIC的确切气候影响仍然具有挑战性,但对于理解人类气候强迫至关重要.
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