DOI: 10.1175/JCLI-D-15-0721.1
Scopus记录号: 2-s2.0-84974856142
论文题名: Reduction of climate sensitivity to solar forcing due to stratospheric ozone feedback
作者: Chiodo G. ; Polvani L.M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 12 起始页码: 4651
结束页码: 4663
语种: 英语
Scopus关键词: Atmospheric chemistry
; Atmospheric temperature
; Chemical reactions
; Climate change
; Climatology
; Feedback
; Ozone
; Ozone layer
; Solar radiation
; Anthropogenic climate changes
; Climate sensitivity
; Climate variability
; Interactive ozone chemistry
; Stratospheric chemistry
; Stratospheric photochemistry
; Surface solar radiation
; Surface temperatures
; Climate models
; accuracy assessment
; atmospheric chemistry
; climate feedback
; climate modeling
; ozone
; sensitivity analysis
; solar radiation
; stratosphere
英文摘要: An accurate assessment of the role of solar variability is a key step toward a proper quantification of natural and anthropogenic climate change. To this end, climate models have been extensively used to quantify the solar contribution to climate variability. However, owing to the large computational cost, the bulk of modeling studies to date have been performed without interactive stratospheric photochemistry: The impact of this simplification on the modeled climate system response to solar forcing remains largely unknown. Here this impact is quantified by comparing the response of two model configurations, with and without interactive ozone chemistry. Using long integrations, robust surface temperature and precipitation responses to an idealized irradiance increase are obtained. Then, it is shown that the inclusion of interactive stratospheric chemistry significantly reduces the surface warming (by about one-third) and the accompanying precipitation response. This behavior is linked to photochemically induced stratospheric ozone changes, and their modulation of the surface solar radiation. The results herein suggest that neglecting stratospheric photochemistry leads to a sizable overestimate of the surface response to changes in solar irradiance. This has implications for simulations of the climate in the last millennium and geoengineering applications employing irradiance changes larger than those observed over the 11-yr sunspot cycle, where models often use simplified treatments of stratospheric ozone that are inconsistent with the imposed solar forcing. © 2016 American Meteorological Society. 资助项目: NCAR, National Center for Atmospheric Research
; NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49906
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, United States; Department of Earth and Environmental Sciences, Columbia University, New York, NY, United States; Lamont-Doherty Earth Observatory, Columbia University, New York, NY, United States
Recommended Citation:
Chiodo G.,Polvani L.M.. Reduction of climate sensitivity to solar forcing due to stratospheric ozone feedback[J]. Journal of Climate,2016-01-01,29(12)