DOI: 10.1002/2017JD028146
Scopus记录号: 2-s2.0-85046250194
论文题名: Effects of Different Stratospheric SO2 Injection Altitudes on Stratospheric Chemistry and Dynamics
作者: Tilmes S. ; Richter J.H. ; Mills M.J. ; Kravitz B. ; MacMartin D.G. ; Garcia R.R. ; Kinnison D.E. ; Lamarque J.-F. ; Tribbia J. ; Vitt F.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 9 起始页码: 4654
结束页码: 4673
语种: 英语
英文关键词: aerosol
; climate engineering
; geoengineering
; ozone hole
; SRM
; stratospheric dynamics and chemistry
Scopus关键词: aerosol
; altitude
; atmospheric chemistry
; climate modeling
; cooling
; Northern Hemisphere
; ozone
; stratosphere
; sulfur dioxide
; water vapor
; Antarctica
英文摘要: Strategically applied geoengineering is proposed to reduce some of the known side effects of stratospheric aerosol modifications. Specific climate goals could be reached depending on design choices of stratospheric sulfur injections by latitude, altitude, and magnitude. Here we explore in detail the stratospheric chemical and dynamical responses to injections at different altitudes using a fully coupled Earth System Model. Two different scenarios are explored that produce approximately the same global cooling of 2°C over the period 2042–2049, a high-altitude injection case using 24 Tg SO2/year at 30 hPa (≈25-km altitude) and a low-altitude injection case using 32 Tg SO2/year injections at 70 hPa (between 19- and 20-km altitude), with annual injections divided equally between 15°N and 15°S. Both cases result in a warming of the lower tropical stratosphere up to 10 and 15°C for the high- and low-altitude injection case and in substantial increases of stratospheric water vapor of up to 2 and 4 ppm, respectively, compared to no geoengineering conditions. Polar column ozone in the Northern Hemisphere is reduced by up to 18% in March for the high-altitude injection case and up to 8% for the low-altitude injection case. However, for winter middle and high northern latitudes, low-altitude injections result in greater column ozone values than without geoengineering. These changes are mostly driven by dynamics and advection. Antarctic column ozone in 2042–2049 does not recover from present-day (2002–2009) values for both cases. ©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/113888
Appears in Collections: 气候减缓与适应
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作者单位: Atmospheric Chemistry, Observations, and Modeling Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Atmospheric Sciences and Global Change Division, 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:
Tilmes S.,Richter J.H.,Mills M.J.,et al. Effects of Different Stratospheric SO2 Injection Altitudes on Stratospheric Chemistry and Dynamics[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(9)