气候变化领域集成服务门户(CCPortal): Long-Term Variability and Tendencies in Middle Atmosphere Temperature and Zonal Wind From WACCM6 Simulations During 1850

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DOI	10.1029/2020JD033579
	Long-Term Variability and Tendencies in Middle Atmosphere Temperature and Zonal Wind From WACCM6 Simulations During 1850–2014
	Ramesh K.; Smith A.K.; Garcia R.R.; Marsh D.R.; Sridharan S.; Kishore Kumar K.
发表日期	2020
ISSN	2169897X
卷号	125 期号:24
英文摘要	Long-term variability of middle atmosphere temperature (T) and zonal wind (U) is investigated using a three-member ensemble of historical simulations of NCAR's Whole Atmospheric Community Climate Model latest version 6 (WACCM6) for 1850–2014 (165 years). The model reproduces the climatological features of T and U. The contributions of Quasi Biennial Oscillation (QBO) at 10 and 30 hPa, solar cycle (SC), El Niño-Southern Oscillation (ENSO), ozone depleting substances (ODS), carbon dioxide (CO2), and stratospheric sulfate aerosol (volcanic eruptions) to change in monthly zonal mean T and U are analyzed using multiple linear regression. The signal due to CO2 increase dominates as a predictor of the net multidecadal global annual mean temperature change at all levels in the middle atmosphere. Contributions from ODS also affect the net multidecadal global mean temperature trend in the stratosphere. Because of similarities in the time evolution of the emissions of CO2 and ODS, the analysis of existing model output cannot accurately separate the attributions of cooling to these two dominant forcing processes. On shorter time scales, solar flux variations are the largest source of variability in the mesosphere while volcanic eruptions are the largest in the stratosphere. In the stratosphere and mesosphere, both QBO and ENSO can significantly impact zonal mean temperature and zonal-mean zonal wind depending on latitudes, but their impact on the multidecadal global mean temperature trend is very small. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	middle atmosphere; multiple linear regression; temperature; WACCM6; zonal wind
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/185590
作者单位	Atmospheric Chemistry Observations and Modeling (ACOM) Laboratory, National Center for Atmospheric Research (NCAR), Boulder, CO, United States; University Corporation for Atmospheric Research (UCAR), Boulder, CO, United States; School of Physics and Astronomy, University of Leeds, Leeds, United Kingdom; National Atmospheric Research Laboratory (NARL), Gadanki, India; Space Physics Laboratory, Vikram Sarabhai Space Centre (VSSC), Trivandrum, India
推荐引用方式 GB/T 7714	Ramesh K.,Smith A.K.,Garcia R.R.,等. Long-Term Variability and Tendencies in Middle Atmosphere Temperature and Zonal Wind From WACCM6 Simulations During 1850–2014[J],2020,125(24).
APA	Ramesh K.,Smith A.K.,Garcia R.R.,Marsh D.R.,Sridharan S.,&Kishore Kumar K..(2020).Long-Term Variability and Tendencies in Middle Atmosphere Temperature and Zonal Wind From WACCM6 Simulations During 1850–2014.Journal of Geophysical Research: Atmospheres,125(24).
MLA	Ramesh K.,et al."Long-Term Variability and Tendencies in Middle Atmosphere Temperature and Zonal Wind From WACCM6 Simulations During 1850–2014".Journal of Geophysical Research: Atmospheres 125.24(2020).