DOI: 10.1175/JCLI-D-17-0418.1
Scopus记录号: 2-s2.0-85040587439
论文题名: No surface cooling over Antarctica from the negative greenhouse effect associated with instantaneous quadrupling of CO2 concentrations
作者: Smith K.L. ; Chiodo G. ; Previdi M. ; Polvani L.M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 1 起始页码: 317
结束页码: 323
语种: 英语
英文关键词: Antarctica
; Climate models
; Energy budget/balance
; Radiative fluxes
; Radiative forcing
; Surface temperature
Scopus关键词: Atmospheric radiation
; Atmospheric temperature
; Budget control
; Carbon
; Carbon dioxide
; Climate models
; Greenhouses
; Radiative transfer
; Surface properties
; Antarctica
; Energy budget/balance
; Radiative fluxes
; Radiative forcings
; Surface temperatures
; Greenhouse effect
; carbon dioxide
; climate modeling
; concentration (composition)
; cooling
; energy balance
; greenhouse effect
; radiative forcing
; radiative transfer
; surface temperature
; Antarctica
英文摘要: Over the highest elevations of Antarctica, during many months of the year, air near the surface is colder than in much of the overlying atmosphere. This unique feature of the Antarctic atmosphere has been shown to result in a negative greenhouse effect and a negative instantaneous radiative forcing at the top of the atmosphere (RFTOA:INST), when carbon dioxide (CO2) concentrations are increased, and it has been suggested that this effect might play some role in te recent cooling trends observed over East Antarctica. Here, using fully coupled global climate model integrations, in addition to radiative transfer model calculations, the authors confirm the existence of such a negative RFTOA:INST over parts of Antarctica in response to an instantaneous quadrupling of CO2. However, it is also shown that the instantaneous radiative forcing at the tropopause (RFTP:INST) is positive. Further, the negative RFTOA:INST lasts only a few days following the imposed perturbation, and rapidly disappears as the stratosphere cools in response to increased CO2. As a consequence, like the RFTP:INST, the stratosphere-adjusted radiative forcing at the TOA is positive over all of Antarctica and, in the model presented herein, surface temperatures increase everywhere over that continent in response to quadrupled CO2. The results, therefore, clearly demonstrate that the curious negative instantaneous radiative forcing plays no role in the recently observed East Antarctic cooling. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111719
Appears in Collections: 气候减缓与适应
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作者单位: University of Toronto Scarborough, Toronto, Canada; Lamont-Doherty Earth Observatory, Palisades, NY, United States; Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, United States; Department of Applied Physics and Applied Mathematics, 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:
Smith K.L.,Chiodo G.,Previdi M.,et al. No surface cooling over Antarctica from the negative greenhouse effect associated with instantaneous quadrupling of CO2 concentrations[J]. Journal of Climate,2018-01-01,31(1)