2012
DOI: 10.1029/2011jd016815
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Optical properties and radiative forcing of the Eyjafjallajökull volcanic ash layer observed over Lille, France, in 2010

Abstract: [1] In this work we characterize optical properties and assess the direct radiative effect of an ash plume observed on April 17, 2010 by AERONET, lidar and broadband solar flux measurements collocated on the roof of the Laboratory of Atmospheric Optics in Lille, northern France. These measurements allowed experimental evaluation of ash radiative impact and validation of simulations. The derived aerosol model of ash is characterized by a bi-modal size distribution dominated by coarse mode centered at a radius … Show more

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Cited by 39 publications
(56 citation statements)
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“…Properties of a downwind volcanic plume observed over Lille on 17 April 2010 were analyzed in detail using groundbased measurements (Derimian et al, 2012). In this study, the AERONET, lidar, and broadband flux observations in conjunction with numerical simulations were used to assess the volcanic aerosol optical properties.…”
Section: Discussionmentioning
confidence: 99%
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“…Properties of a downwind volcanic plume observed over Lille on 17 April 2010 were analyzed in detail using groundbased measurements (Derimian et al, 2012). In this study, the AERONET, lidar, and broadband flux observations in conjunction with numerical simulations were used to assess the volcanic aerosol optical properties.…”
Section: Discussionmentioning
confidence: 99%
“…This value is close to the one (0.004) prescribed by Schumann et al (2011), which was derived from the joint analysis of ground-based lidar and airborne in situ measurements acquired for volcanic plumes observed on 16 and 17 April. For the imaginary refractive index we use an a priori of the maximal possible value of 0.02, which relies on findings reported in Derimian et al (2012). Because the a priori information for Z a varies from one case to another, we mention it in the paper as necessary.…”
Section: Research Algorithmmentioning
confidence: 99%
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“…The largest uncertainties of the AERONET-based aerosol retrievals and, consequently, of downwelling flux estimations, were obtained in regions dominated by mineral dust and mixed aerosols [16]. The AERONET-based microphysical and optical properties of natural and anthropogenic aerosols collected around the world were applied for the DARF assessment [11,17].…”
Section: Introductionmentioning
confidence: 99%
“…Abundant literature exists on the DARF assessment using aerosol properties obtained from satellite [8,9] and surface [10,11] observations, including aerosol retrievals from the Aerosol Robotic Network (AERONET; [12]; http://aeronet.gsfc.nasa.gov/) and a suite of instruments supported by the Atmospheric Radiation Measurement (ARM) Program ( [13]; http://www.arm.gov/instruments). The AERONET-supported sunphotometer measurements at four specific wavelengths (0.44, 0.674, 0.87 and 1.02 μm) have been used for deriving aerosol optical properties from the retrieved size distributions and complex refractive index [14,15].…”
Section: Introductionmentioning
confidence: 99%