DOI: 10.1002/grl.50110
论文题名: On the radiative forcing of contrail cirrus contaminated by black carbon
作者: Liou K.N. ; Takano Y. ; Yue Q. ; Yang P.
刊名: Geophysical Research Letters
ISSN: 0094-9290
EISSN: 1944-9021
出版年: 2013
卷: 40, 期: 4 起始页码: 778
结束页码: 784
语种: 英语
英文关键词: contrail
; radiative forcing
Scopus关键词: Atmospheric radiation
; Clouds
; Dust
; Light absorption
; Mixing
; Soot
; Sun
; Absorption effects
; Absorption enhancement
; Absorption of solar radiation
; contrail
; Multiple inclusions
; Radiative effects
; Radiative forcings
; Radiative properties
; Ice
; absorption
; black carbon
; cirrus
; crystal structure
; ice
; mixing
; optical depth
; particle size
; radiative forcing
; regional pattern
; solar radiation
; soot
; wavelength
英文摘要: The effects of internal and external mixings of black carbon (BC) (soot) in ice particles on the radiative properties of contrail cirrus are investigated using a simple ice plate model. The internal mixing state absorbs substantially more radiation as compared with its external mixing counterpart due to light absorption enhancement from all directions. The soot absorption effect is largely confined to wavelengths shorter than about 1.4 μm, beyond which ice absorption predominates. For an ice crystal size of 5 μm internally mixed with a soot particle of 0.1 μm radius in contrail cirrus with an optical depth of 0.5, the instantaneous radiative forcings at the top of and within the atmosphere are approximately 0.2 and 0.8 W/m2, respectively. In view of the likelihood of multiple inclusions of soot particles in contrail cirrus, these values are lower limits. Thus, a realistic assessment of the global and regional radiative forcings of contrail cirrus for climate studies must account for the radiative effect induced by soot mixing states associated with the microscopic formation of ice particles. Key Points Black carbon can substantially impact the radiative forcing of contrail cirrus Internal mixing of BC in ice can alter its absorption of solar radiation Radiative forcing analysis for contrail must account for BC contamination ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878177962&doi=10.1002%2fgrl.50110&partnerID=40&md5=b2b0bd88b8d081c0ce3fe706845a197f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6554
Appears in Collections: 气候减缓与适应
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作者单位: Joint Institute for Regional Earth System Science and Engineering, Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA 90095, United States
Recommended Citation:
Liou K.N.,Takano Y.,Yue Q.,et al. On the radiative forcing of contrail cirrus contaminated by black carbon[J]. Geophysical Research Letters,2013-01-01,40(4).