0000000000433714

AUTHOR

Marco Cacciani

showing 3 related works from this author

Sensitivity of shortwave radiative fluxes to the vertical distribution of aerosol single scattering albedo in the presence of a desert dust layer

2010

Abstract The aim of this work is to quantify the sensitivity of shortwave radiative fluxes to changes in the vertical distribution of aerosol absorption, taken into account through the aerosol Single Scattering Albedo (SSA). The case study represents a real atmospheric situation with a desert dust layer (DDL) in the mid troposphere over an urban Boundary Layer (BL) observed at Rome on 20 June 2007. A moderately high aerosol optical depth (AOD), 0.292 at 550 nm, and low Angstrom exponent of 0.30 were measured. The observed case was reconstructed with a radiative transfer model, in which the SSA of the boundary layer aerosols was varied from that of a highly absorbing aerosol type (urban) to …

TroposphereAtmospheric ScienceAngstrom exponentAtmospheric radiative transfer codesMeteorologySingle-scattering albedoSolar zenith angleRadiative transferEnvironmental scienceAlbedoAtmospheric sciencesGeneral Environmental ScienceAerosolAtmospheric Environment
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The June 2007 Saharan dust event in the central Mediterranean: Observations and radiative effects in marine, urban, and sub-urban environments

2011

Abstract A desert dust episode in June 2007 and its radiative effects on the energy budget have been studied at three Italian stations (Rome, Lecce and Lampedusa) with the aim of investigating the interactions with different conditions and aerosol types over the Mediterranean. The three sites are representative for urban (Rome), sub-urban/rural (Lecce), and marine (Lampedusa) environment, respectively in the central Mediterranean region. Measured ground-based column-averaged aerosol optical properties and aerosol extinction profiles were used to initialize the MODTRAN4 radiative transfer model. The radiative transfer model was used to estimate the shortwave aerosol radiative forcing ( ARF )…

Atmospheric ScienceAngstrom exponentAerosol Optical PropertiePlanetary boundary layerRadiative forcingMineral dustAtmospheric sciencesAerosol optical properties; Vertical distribution; Radiative forcing; Desert dust eventAERONETAerosolAtmospheric radiative transfer codesRadiative transferEnvironmental sciencedesert dust event; aerosol optical properties; radiative forcing; vertical distributionVertical DistributionRadiative ForcingGeneral Environmental Science
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Altitude-resolved shortwave and longwave radiative effects of desert dust in the Mediterranean during the GAMARF campaign: Indications of a net daily…

2015

Desert dust interacts with shortwave (SW) and longwave (LW) radiation, influencing the Earth radiation budget and the atmospheric vertical structure. Uncertainties on the dust role are large in the LW spectral range, where few measurements are available and the dust optical properties are not well constrained. The first airborne measurements of LW irradiance vertical profiles over the Mediterranean were carried out during the Ground-based and Airborne Measurements of Aerosol Radiative Forcing (GAMARF) campaign, which took place in spring 2008 at the island of Lampedusa. The experiment was aimed at estimating the vertical profiles of the SW and LW aerosol direct radiative forcing (ADRF) and …

Atmospheric ScienceSolar zenith angleLongwaveRadiative forcingAtmospheric sciencesAerosolAtmosphereGeophysicsAtmospheric radiative transfer codesSpace and Planetary ScienceEarth and Planetary Sciences (miscellaneous)Radiative transferEnvironmental scienceShortwaveJournal of Geophysical Research: Atmospheres
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