补偿大气调整减少了来自洪加火山的火山强迫作用,增加了平流层水蒸气增强
1Frontier Science Center for Deep Ocean Multispheres and Earth System (FDOMES) and Physical Oceanography Laboratory, Ocean University of China, Qingdao, China.
Science advances
|August 9, 2024
概括
2022年洪加火山爆发将大量的水蒸气释放到平流层. 这项研究量化了它的辐射强迫,发现对全球表面温度的影响有限.
科学领域:
- 大气化学 大气化学
- 气候科学 气候科学
- 火山学 火山学是一门学科.
背景情况:
- 2022年洪加海底火山爆发将创纪录的水蒸气量注入地球平流层.
- 平流层的水蒸气显著影响全球辐射预算和气候系统.
研究的目的:
- 为了研究从洪加火山喷发中前所未有的平流层水蒸气注入的辐射强迫效应.
- 使用离线方法对比辐射强迫估计与地球系统模型模拟.
主要方法:
- 利用地球系统模型模拟来计算有效的辐射强迫.
- 基于平流层水蒸气均增加的估计即时,平流层调整和有效的辐射强迫.
- 采用合的大气和海洋模型进行整体模拟.
主要成果:
- 估计的瞬间,平流层调整和有效辐射强迫分别为-0.04,0.08,0.05 W m-2.
- 补偿大气调整减少了来自火山水蒸气的阳性辐射强迫.
- 模拟显示,全球平均表面温度增幅最小为0.05 K.
结论:
- 洪加火山爆发的平流层水蒸气注入对全球平均表面温度的影响有限.
- 大气调整在调节火山水蒸气辐射效应方面发挥着至关重要的作用.
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