气候变化领域集成服务门户(CCPortal): Dynamical and Trace Gas Responses of the Quasi-Biennial Oscillation to Increased CO2

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DOI	10.1029/2020JD034151
	Dynamical and Trace Gas Responses of the Quasi-Biennial Oscillation to Increased CO2
	DallaSanta K.; Orbe C.; Rind D.; Nazarenko L.; Jonas J.
发表日期	2021
ISSN	2169897X
卷号	126 期号:6
英文摘要	Long-term projections of the Quasi-Biennial Oscillation (QBO) remain uncertain. Using the high-top “Middle Atmosphere” (MA) version of the NASA Goddard Institute for Space Studies (GISS) ModelE (E2.2-AP), we show that increased CO2 reduces the QBO period and weakens its amplitude, consistent with results from recent multimodel studies. The amplitude response is asymmetric, with the easterly phase weakening more than the westerly phase. Results from both coupled atmosphere-ocean and climatologically fixed sea surface temperature simulations link the period response to changes in parameterized convective gravity wave fluxes, whereas the amplitude changes are more closely tied to changes in tropical upwelling. Comparisons of simulations with and without ozone-dynamical feedbacks reveal that ozone feedbacks increase the QBO amplitude and period in pre-industrial control simulations, and reduce the response of the amplitude to increased CO2. The response of stratospheric tracers to projected changes in the QBO is also investigated. Similarity between results using fully interactive (trace gas and aerosol) versus linearized ozone chemical mechanisms suggests that the QBO response to CO2 does not depend on additional chemical feedbacks beyond those associated with ozone, which implies that projected QBO changes may be credibly represented using simplified stratospheric ozone schemes. © 2021. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185404
作者单位	NASA Goddard Institute for Space Studies, New YorkNY, United States; Universities Space Research Association, Columbia, MD, United States; Center for Climate Systems Research, Columbia University, New YorkNY, United States
推荐引用方式 GB/T 7714	DallaSanta K.,Orbe C.,Rind D.,et al. Dynamical and Trace Gas Responses of the Quasi-Biennial Oscillation to Increased CO2[J],2021,126(6).
APA	DallaSanta K.,Orbe C.,Rind D.,Nazarenko L.,&Jonas J..(2021).Dynamical and Trace Gas Responses of the Quasi-Biennial Oscillation to Increased CO2.Journal of Geophysical Research: Atmospheres,126(6).
MLA	DallaSanta K.,et al."Dynamical and Trace Gas Responses of the Quasi-Biennial Oscillation to Increased CO2".Journal of Geophysical Research: Atmospheres 126.6(2021).