| DOI: | 10.1002/2013GL058840
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| 论文题名: | Detecting super-thin clouds with polarized sunlight |
| 作者: | Sun W.; Videen G.; Mishchenko M.I.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-10458
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| EISSN: | 1944-10189
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| 出版年: | 2014
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| 卷: | 41, 期:2 | | 起始页码: | 688
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| 结束页码: | 693
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| 语种: | 英语
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| 英文关键词: | angle of linear polarization
; detection of clouds
; Reflected light
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| Scopus关键词: | Electric fields
; Optical properties
; Polarization
; Solar radiation
; Sun
; Back-scattered
; Cloud particles
; Linear polarization
; Liquid water clouds
; Passive satellites
; Polarized sunlight
; Radiative transfer model
; Reflected light
; Earth atmosphere
; backscatter
; cirrus
; clear sky
; cloud microphysics
; electric field
; polarization
; radiative transfer
; satellite imagery
; solar radiation
; sunspot
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| 英文摘要: | We report a novel method for detecting cloud particles in the atmosphere. Solar radiation backscattered from clouds is studied with both satellite data and a radiative transfer model. A distinct feature is found in the angle of linear polarization of solar radiation that is backscattered from clouds. The dominant backscattered electric field from the clear-sky Earth-atmosphere system is nearly parallel to the Earth surface. However, when clouds are present, this electric field can rotate significantly away from the parallel direction. Model results demonstrate that this polarization feature can be used to detect super-thin cirrus clouds having an optical depth of only ∼0.06 and super-thin liquid water clouds having an optical depth of only ∼0.01. Such clouds are too thin to be sensed using any current passive satellite instruments. ©2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892994975&doi=10.1002%2f2013GL058840&partnerID=40&md5=0ce29ff4eaaa5c03228bb6cadf8b182a
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7722
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Science Systems and Applications Inc., Hampton, VA, United States
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| Recommended Citation: | |
Sun W.,Videen G.,Mishchenko M.I.. Detecting super-thin clouds with polarized sunlight[J]. Geophysical Research Letters,2014-01-01,41(2).
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