A unified approach to infrared aerosol remote sensing and type specification

doi:10.5194/acp-13-2195-2013

GSTDTAP > 地球科学

DOI	10.5194/acp-13-2195-2013
	A unified approach to infrared aerosol remote sensing and type specification
	L. Clarisse, P.-F. Coheur, F. Prata, J. Hadji-Lazaro, D. Hurtmans, and C. Clerbaux
	2013-02-25
发表期刊	Atmospheric Chemistry and Physics
出版年	2013
英文摘要	Atmospheric aerosols impact air quality and global climate. Space based measurements are the best way to observe their spatial and temporal distributions, and can also be used to gain better understanding of their chemical, physical and optical properties. Aerosol composition is the key parameter affecting the refractive index, which determines how much radiation is scattered and absorbed. Composition of aerosols is unfortunately not measured by state of the art satellite remote sounders. Here we use high resolution infrared measurements for aerosol type differentiation, exploiting, in that part of spectrum, the dependency of their refractive index on wavelength. We review existing detection methods and present a unified detection method based on linear discrimination analysis. We demonstrate this method on measurements of the Infrared Atmospheric Sounding Interferometer (IASI) and five different aerosol types, namely volcanic ash, windblown sand, sulfuric acid droplets, ammonium sulfate and smoke particles. We compare these with traditional MODIS AOD measurements. The detection of the last three types is unprecedented in the infrared in nadir mode, but is very promising, especially for sulfuric acid droplets which are detected in the lower troposphere and up to 6 months after injection in the upper troposphere/lower stratosphere.
领域	地球科学
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/288061
专题	地球科学
推荐引用方式 GB/T 7714	L. Clarisse, P.-F. Coheur, F. Prata, J. Hadji-Lazaro, D. Hurtmans, and C. Clerbaux. A unified approach to infrared aerosol remote sensing and type specification[J]. Atmospheric Chemistry and Physics,2013.
APA	L. Clarisse, P.-F. Coheur, F. Prata, J. Hadji-Lazaro, D. Hurtmans, and C. Clerbaux.(2013).A unified approach to infrared aerosol remote sensing and type specification.Atmospheric Chemistry and Physics.
MLA	L. Clarisse, P.-F. Coheur, F. Prata, J. Hadji-Lazaro, D. Hurtmans, and C. Clerbaux."A unified approach to infrared aerosol remote sensing and type specification".Atmospheric Chemistry and Physics (2013).