0000000000623900

AUTHOR

Astrid Kiendler-scharr

showing 5 related works from this author

General overview: European Integrated project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI)-integrating aerosol research from nano …

2011

In this paper we describe and summarize the main achievements of the European Aerosol Cloud Climate and Air Quality Interactions project (EUCAARI). EUCAARI started on 1 January 2007 and ended on 31 December 2010 leaving a rich legacy including: (a) a comprehensive database with a year of observations of the physical, chemical and optical properties of aerosol particles over Europe, (b) comprehensive aerosol measurements in four developing countries, (c) a database of airborne measurements of aerosols and clouds over Europe during May 2008, (d) comprehensive modeling tools to study aerosol processes fron nano to global scale and their effects on climate and air quality. In addition a new Pan…

Atmospheric ScienceEuropean aerosol010504 meteorology & atmospheric sciencesaerosolAerosol radiative forcingClimateclouds010501 environmental sciencesAtmospheric sciences01 natural scienceslcsh:Chemistry/dk/atira/pure/sustainabledevelopmentgoals/climate_actionAerosol cloud11. SustainabilitySDG 13 - Climate Actionddc:550particle propertiesEnvironmental policysaturation vapor-pressureschemical-transport modelMiljövetenskapair qualitylcsh:QC1-999General Circulation Model/dk/atira/pure/subjectarea/asjc/1900/1902EUCAARIEELS - Earth Environmental and Life SciencesION-INDUCED NUCLEATIONChemical transport modelMeteorologyEarth & EnvironmentEnergy / Geological Survey NetherlandsSIMULATION CHAMBER SAPHIRnuclei number concentrationSECONDARY ORGANIC AEROSOLpure component propertiesAir quality indexEnvironmental quality0105 earth and related environmental sciencesPARTICLE FORMATION EVENTSAtmosphärische Spurenstoffe[CHIM.CATA]Chemical Sciences/CatalysisCAS - Climate Air and Sustainability[SDE.ES]Environmental Sciences/Environmental and SocietyFalconAerosollcsh:QD1-99913. Climate actionmixed-phase cloudsEnvironmental scienceatmospheric sulfuric-acidEnvironmental Scienceslcsh:Physics
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The formation, properties and impact of secondary organic aerosol: Current and emerging issues

2009

Hallquist, M. Wenger, J. C. Baltensperger, U. Rudich, Y. Simpson, D. Claeys, M. Dommen, J. Donahue, N. M. George, C. Goldstein, A. H. Hamilton, J. F. Herrmann, H. Hoffmann, T. Iinuma, Y. Jang, M. Jenkin, M. E. Jimenez, J. L. Kiendler-Scharr, A. Maenhaut, W. McFiggans, G. Mentel, Th. F. Monod, A. Prevot, A. S. H. Seinfeld, J. H. Surratt, J. D. Szmigielski, R. Wildt, J.; Secondary organic aerosol (SOA) accounts for a significant fraction of ambient tropospheric aerosol and a detailed knowledge of the formation, properties and transformation of SOA is therefore required to evaluate its impact on atmospheric processes, climate and human health. The chemical and physical processes associated wit…

humic-like substancesAtmospheric Scienceenvironmental chamber data010504 meteorology & atmospheric sciences010501 environmental sciences01 natural sciencessupercritical-fluid extractionlcsh:Chemistrychemistry.chemical_compoundHuman healthddc:550catalyzed heterogeneous reactionsProcess engineeringairborne particulate matter0105 earth and related environmental sciencesTropospheric aerosolpolycyclic aromatic-hydrocarbonsinitiated atmospheric oxidationAtmospheric modelsbusiness.industryPharmacology. Therapy[CHIM.CATA] Chemical Sciences/Catalysis[CHIM.CATA]Chemical Sciences/Catalysischromatography-mass spectrometrylcsh:QC1-999JAerosolChemistrylcsh:QD1-999chemistry13. Climate actionEnvironmental chemistryEarth and Environmental Scienceslow-molecular-weightAerosol mass spectrometrytropospheric chemistry mechanismOrganic componentCurrent (fluid)/dk/atira/pure/subjectarea/asjc/1900/1902businesslcsh:PhysicsOrganosulfate
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Aging of biogenic secondary organic aerosol via gas-phase OH radical reactions

2012

The Multiple Chamber Aerosol Chemical Aging Study (MUCHACHAS) tested the hypothesis that hydroxyl radical (OH) aging significantly increases the concentration of first-generation biogenic secondary organic aerosol (SOA). OH is the dominant atmospheric oxidant, and MUCHACHAS employed environmental chambers of very different designs, using multiple OH sources to explore a range of chemical conditions and potential sources of systematic error. We isolated the effect of OH aging, confirming our hypothesis while observing corresponding changes in SOA properties. The mass increases are consistent with an existing gap between global SOA sources and those predicted in models, and can be described b…

OzoneFree Radicals010504 meteorology & atmospheric sciencesUltraviolet Rayschemistry.chemical_element010501 environmental sciencesMass spectrometrybehavioral disciplines and activities01 natural sciencesOxygenMass SpectrometryAtmospherechemistry.chemical_compoundOzoneOrganic Chemicals0105 earth and related environmental sciencesAerosolsMultidisciplinaryOzonolysisAtmosphereHydroxyl RadicalReproducibility of ResultsAerosolOxygenModels ChemicalchemistryAtmospheric chemistryEnvironmental chemistryPhysical SciencesSolventsHydroxyl radicalProceedings of the National Academy of Sciences of the United States of America
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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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Suppression of new particle formation from monoterpene oxidation by NO<sub>x</sub>

2014

Abstract. The impact of nitrogen oxides (NOx = NO + NO2) on new particle formation (NPF) and on photochemical ozone production from real plant volatile organic compound (BVOC) emissions was studied in a laboratory setup. At high NOx conditions ([BVOC] / [NOx] < 7, [NOx] > 23 ppb) new particle formation was suppressed. Instead, photochemical ozone formation was observed resulting in higher hydroxyl radical (OH) and lower nitrogen monoxide (NO) concentrations. When [NO] was reduced back to levels below 1 ppb by OH reactions, NPF was observed. Adding high amounts of NOx caused NPF to be slowed by orders of magnitude compared to analogous experiments at low NOx conditions ([NOx] ~300 ppt)…

chemistry.chemical_classificationAtmospheric Science010504 meteorology & atmospheric sciencesMonoterpeneRadicalPhotodissociation010501 environmental sciencesRate-determining stepPhotochemistry01 natural sciencesOrganic compoundchemistry.chemical_compoundchemistry13. Climate actionParticleHydroxyl radicalNOx0105 earth and related environmental sciencesAtmospheric Chemistry and Physics
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