DOI: 10.1175/JCLI-D-16-0842.1
Scopus记录号: 2-s2.0-85020128933
论文题名: Large increase in incident shortwave radiation due to the ozone hole offset by high climatological albedo over Antarctica
作者: Chiodo G. ; Polvani L.M. ; Previdi M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 13 起始页码: 4883
结束页码: 4890
语种: 英语
英文摘要: Despite increasing scientific scrutiny in recent years, the direct impact of the ozone hole on surface temperatures over Antarctica remains uncertain. Here, this question is explored by using the Community Earth System Model-Whole Atmosphere Community Climate Model (CESM-WACCM), contrasting two ensembles of runs with and without stratospheric ozone depletion. It is found that, during austral spring, the ozone hole leads to a surprisingly large increase in surface downwelling shortwave (SW) radiation over Antarctica of 3.8 W m-2 in clear sky and 1.8 W m-2 in all sky. However, despite this large increase in incident SW radiation, no ozone-induced surface warming is seen in the model. It is shown that the lack of a surface temperature response is due to reflection of most of the increased downward SW, resulting in an insignificant change to the net SW radiative heating. To first order, this reflection is simply due to the high climatological surface albedo of the Antarctic snow (97% in visible SW), resulting in a net zero ozone-induced surface SW forcing. In addition, it is shown that stratospheric ozone depletion has a negligible effect on longwave (LW) radiation and other components of the surface energy budget. These results suggest a minimal role for ozone depletion in forcing Antarctic surface temperature trends on a continental scale. © 2017 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48821
Appears in Collections: 气候减缓与适应 气候变化与战略
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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.,Previdi M.. Large increase in incident shortwave radiation due to the ozone hole offset by high climatological albedo over Antarctica[J]. Journal of Climate,2017-01-01,30(13)