DOI: 10.1002/2017JD027861
Scopus记录号: 2-s2.0-85043396617
论文题名: Simple Versus Complex Physical Representation of the Radiative Forcing From Linear Contrails: A Sensitivity Analysis
作者: RodríguezDeLeón R. ; Lim L.L. ; Lee D.S. ; Bennett M. ; Krämer M.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 5 起始页码: 2831
结束页码: 2840
语种: 英语
英文关键词: contrails
; ice water content
; radiative forcing
; radiative representation
Scopus关键词: air temperature
; cirrus
; complexity
; contrail
; optical depth
; particle size
; radiative forcing
; sensitivity analysis
; water content
英文摘要: An off-line complex representation of the radiative forcing of linear contrails is applied for the first time to monthly mean 3-D distributions. This representation assumes the same temperature-dependent, spatially and time-varying functions of ice water content and particle size for contrails as for natural cirrus. This complex representation is contrasted with more commonly used simplified setups in which fixed contrail optical depth values [0.1 to 0.3] are prescribed and from which the results show differences covering a factor of 3 assuming fixed or variable contrail layer altitudes. This prescribed range of representative fixed altitudes resulted in differences covering a factor of 2 when the optical depth was also fixed. Prescribing fixed particle sizes also resulted in differences covering a factor of 2 if altitude and optical depth are also fixed. In contrast, the inclusion of the dependence of the contrail ice water content on temperature produced differences of around 20% or less when assuming the same ranges of altitudes and ice particle sizes, resulting in a much improved confidence in the radiative forcing estimates and more accurate spatial and temporal representations of the radiative interaction between contrails and the background meteorology. Assuming a contrail vertical extent of 500 m, a 9 mW m−2 annual mean contrail radiative forcing is estimated, with an uncertainty range between 1 and 23 mW m−2 based on the ice water content's observed variability. ©2018. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114278
Appears in Collections: 气候减缓与适应
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作者单位: Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, United Kingdom; Forschungszentrum, Jülich Institut für Energie und Klimaforschung Stratosphäre, Jülich, Germany
Recommended Citation:
RodríguezDeLeón R.,Lim L.L.,Lee D.S.,et al. Simple Versus Complex Physical Representation of the Radiative Forcing From Linear Contrails: A Sensitivity Analysis[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(5)