0000000000172991

AUTHOR

Lieven Clarisse

showing 3 related works from this author

Aerosol properties of the Eyjafjallajökull ash derived from sun photometer and satellite observations over the Iberian Peninsula

2012

The Eyjafjallajökull ash that crossed over Spain and Portugal on 6e12 May 2010 has been monitored by a set of operational sun photometer sites within AERONET-RIMA and satellite sensors. The sun photometer observations (aerosol optical depth, coarse mode concentrations) and ash products from IASI and SEVIRI satellite sensors, together with FLEXPART simulations of particle transport, allow identifying the volcanic aerosols. The aerosol columnar properties derived from inversions were investigated, indicating specific properties, especially regarding the absorption. The single scattering albedo was high (0.95 at 440 nm) and nearly wavelength independent, although with slight decrease with wave…

Aerosols -- Environmental aspectsAtmospheric SciencegeographyAerosols -- Aspectes ambientalsgeography.geographical_feature_categoryTeledeteccióSingle-scattering albedoFotometria:Enginyeria electrònica::Optoelectrònica [Àrees temàtiques de la UPC]Remote sensingAtmospheric sciencesAerosolSun photometerPhotometryWavelengthMeteorologyVolcanoEnvironmental scienceSatelliteMeteorologiaParticle sizeAbsorption (electromagnetic radiation)General Environmental ScienceRemote sensing:Desenvolupament humà i sostenible::Degradació ambiental::Contaminació atmosfèrica [Àrees temàtiques de la UPC]
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Stratospheric aerosol-Observations, processes, and impact on climate

2016

Interest in stratospheric aerosol and its role in climate have increased over the last decade due to the observed increase in stratospheric aerosol since 2000 and the potential for changes in the sulfur cycle induced by climate change. This review provides an overview about the advances in stratospheric aerosol research since the last comprehensive assessment of stratospheric aerosol was published in 2006. A crucial development since 2006 is the substantial improvement in the agreement between in situ and space-based inferences of stratospheric aerosol properties during volcanically quiescent periods. Furthermore, new measurement systems and techniques, both in situ and space based, have be…

geographygeography.geographical_feature_category010504 meteorology & atmospheric sciencesAir pollutionClimate changeSulfur cyclerespiratory system010502 geochemistry & geophysicsmedicine.disease_causeAtmospheric sciencescomplex mixtures01 natural sciencesAerosolchemistry.chemical_compoundGeophysicschemistryVolcano13. Climate actionAtmospheric chemistryClimatologymedicineEnvironmental scienceClimate model0105 earth and related environmental sciencesCarbonyl sulfideReviews of Geophysics
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Simulation of organics in the atmosphere: evaluation of EMACv2.54 with the Mainz Organic Mechanism (MOM) coupled to the ORACLE (v1.0) submodel

2021

Abstract. An updated and expanded representation of organics in the chemistry general circulation model EMAC (ECHAM5/MESSy for Atmospheric Chemistry) has been evaluated. First, the comprehensive Mainz Organic Mechanism (MOM) in the submodel MECCA (Module Efficiently Calculating the Chemistry of the Atmosphere) was activated with explicit degradation of organic species up to five carbon atoms and a simplified mechanism for larger molecules. Second, the ORACLE submodel (version 1.0) considers now condensation on aerosols for all organics in the mechanism. Parameterizations for aerosol yields are used only for the lumped species that are not included in the explicit mechanism. The simultaneous…

AtmospherechemistryOrganic mechanismAtmospheric chemistryCondensationMoleculeThermodynamicschemistry.chemical_elementCarbonOracleddc:910Aerosol
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