气候变化领域集成服务门户(CCPortal): Differences in the quasi-biennial oscillation response to stratospheric aerosol modification depending on injection strategy and species

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DOI	10.5194/acp-21-8615-2021
	Differences in the quasi-biennial oscillation response to stratospheric aerosol modification depending on injection strategy and species
	Franke H.; Niemeier U.; Visioni D.
发表日期	2021
ISSN	1680-7316
起始页码	8615
结束页码	8635
卷号	21 期号:11
英文摘要	A known adverse side effect of stratospheric aerosol modification (SAM) is the alteration of the quasibiennial oscillation (QBO), which is caused by the stratospheric heating associated with an artificial aerosol layer. Multiple studies found the QBO to slow down or even completely vanish for point-like injections of SO2 at the Equator. The cause for this was found to be a modification of the thermal wind balance and a stronger tropical upwelling. For other injection strategies, different responses of the QBO have been observed. A theory which is able to explain those differences in a comprehensive manner has not yet been presented. This is further complicated by the fact that the simulated QBO response is highly sensitive to the used model even under identical boundary conditions. Therefore, within this study we investigate the response of the QBO to SAM for three different injection strategies (point-like injection at the Equator, point-like injection at 30°N and 30° S simultaneously, and areal injection into a 60° wide belt along the Equator). Our simulations confirm that the QBO response significantly depends on the injection location. Based on the thermal wind balance, we demonstrate that this dependency is explained by differences in the meridional structure of the aerosol-induced stratospheric warming, i.e., the location and meridional extension of the maximum warming. Additionally, we also tested two different injection species (SO2 and H2SO4). The QBO response is qualitatively similar for both investigated injection species. Comparing the results to corresponding results of a second model, we further demonstrate the generality of our theory as well as the importance of an interactive treatment of stratospheric ozone for the simulated QBO response. © Author(s) 2021.
语种	英语
scopus关键词	aerosol; boundary condition; chemical alteration; quasi-biennial oscillation; stratosphere; upwelling; wind
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246830
作者单位	Max Planck Institute for Meteorology, Bundesstr. 53, Hamburg, 20146, Germany; International Max Planck Research School on Earth System Modelling, Bundesstr. 53, Hamburg, 20146, Germany; Sibley School for Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY, United States
推荐引用方式 GB/T 7714	Franke H.,Niemeier U.,Visioni D.. Differences in the quasi-biennial oscillation response to stratospheric aerosol modification depending on injection strategy and species[J],2021,21(11).
APA	Franke H.,Niemeier U.,&Visioni D..(2021).Differences in the quasi-biennial oscillation response to stratospheric aerosol modification depending on injection strategy and species.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(11).
MLA	Franke H.,et al."Differences in the quasi-biennial oscillation response to stratospheric aerosol modification depending on injection strategy and species".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.11(2021).