globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.50431
论文题名:
The impact of the melting layer on the passive microwave cloud scattering signal observed from satellites: A study using TRMM microwave passive and active measurements
作者: Galligani V.S.; Prigent C.; Defer E.; Jimenez C.; Eriksson P.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:11
起始页码: 5667
结束页码: 5678
语种: 英语
英文关键词: melting layer
Scopus关键词: Melting ; Rain ; Scattering ; Snow ; Melting layers ; Microphysical property ; Nonspherical particle ; Polarized scattering ; Precipitation radar ; Radiative properties ; Radiative transfer simulations ; Tropical rainfall measurement missions ; Microwaves ; algorithm ; melting ; microwave radiation ; radar imagery ; radiative transfer ; rainfall ; satellite imagery ; signal
英文摘要: Concurrent passive and active microwave measurements onboard the Tropical Rainfall Measurement Mission (TRMM) show that under cloudy conditions, when a melting layer is detected by the precipitation radar, a polarized scattering signal at 85 GHz in passive mode is often observed. Radiative transfer simulations confirm the role of large horizontally oriented non-spherical particles on the polarized scattering signal and assess the effect of changes in particle phase, from solid ice to dry snow to melting snow, on the radiative properties. We conclude on the necessity to account for this polarization generated by the clouds in passive microwave rain retrievals and to use this specific signature to help diagnose the precipitation type and derive more accurate algorithms. In addition, analysis of the passive microwave polarized scattering is a unique way to get insight into microphysical properties of clouds at global scale, and this potential should be explored at millimeter and submillimeter frequencies that are more sensitive to the scattering generated by smaller particles. © 2013. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63680
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Laboratoire d'Etudes du Rayonnement et de la Matière en Astro-physique (LERMA), Centre National de la Recherche Scientifique, Observatoire de Paris, Paris, France; Department of Earth and Space Sciences, Chalmers University of Technology, Gothenburg, Sweden

Recommended Citation:
Galligani V.S.,Prigent C.,Defer E.,et al. The impact of the melting layer on the passive microwave cloud scattering signal observed from satellites: A study using TRMM microwave passive and active measurements[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(11)
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