DOI: 10.1029/2018JD028285
Scopus记录号: 2-s2.0-85048986902
论文题名: Stratospheric Response in the First Geoengineering Simulation Meeting Multiple Surface Climate Objectives
作者: Richter J.H. ; Tilmes S. ; Glanville A. ; Kravitz B. ; MacMartin D.G. ; Mills M.J. ; Simpson I.R. ; Vitt F. ; Tribbia J.J. ; Lamarque J.-F.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 11 起始页码: 5762
结束页码: 5782
语种: 英语
英文关键词: climate
; geoengineering
; stratosphere
; sulfate aerosols
Scopus关键词: aerosol
; algorithm
; atmospheric chemistry
; atmospheric dynamics
; atmospheric modeling
; climate
; engineering geology
; jet
; quasi-biennial oscillation
; simulation
; storm track
; stratosphere
; sulfur dioxide
; surface temperature
; temperature gradient
; zonal wind
英文摘要: We describe here changes in stratospheric dynamics and chemistry in a first century-long sulfate aerosol geoengineering simulation in which the mean surface temperature and the interhemispheric and equator-to-pole surface temperature gradients were kept near their 2020 levels despite the RCP8.5 emission scenario. Simulations were carried out with the Community Earth System Model, version 1 with the Whole Atmosphere Community Climate Model as its atmospheric component [CESM1(WACCM)] coupled to a feedback algorithm controlling the magnitude of sulfur dioxide (SO2) injections at four injection latitudes. We find that, throughout the entire geoengineering simulation, the lower stratospheric temperatures increase by ∼0.19 K per Tg SO2 injection per year or ∼10 K with ∼40 Tg SO2/year total SO2 injection. These temperature changes are associated with a strengthening of the polar jets in the stratosphere and weakening of the mean zonal wind in the lower stratosphere subtropics and throughout the troposphere, associated with weaker storm track activity. In the geoengineering simulation the quasi-biennial oscillation of the tropical lower stratospheric winds remains close to the presently observed quasi-biennial oscillation, even for large amounts of SO2 injection. Water vapor in the stratosphere increases substantially: by 25% with ∼20 Tg SO2/year annual injection and by up to 90% with a ∼40 Tg SO2/year injection. Stratospheric column ozone in the geoengineering simulation is predicted to recover to or supersede preozone hole conditions by the end of the century. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113703
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Atmospheric Chemistry, Observations, and Modeling Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Pacific Northwest National Laboratory, Richland, WA, United States; Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY, United States; Department of Computing and Mathematical Sciences, California Institute of Technology, Pasadena, CA, United States
Recommended Citation:
Richter J.H.,Tilmes S.,Glanville A.,et al. Stratospheric Response in the First Geoengineering Simulation Meeting Multiple Surface Climate Objectives[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(11)