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Coupling aerosol surface and bulk chemistry with a kinetic double layer model (K2-SUB): oxidation of oleic acid by ozone
aerosol surface bulk chemistry a kinetic double layer model oleic acid ozone
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2010/8/13
We present a kinetic double layer model coupling aerosol surface and bulk chemistry (K2-SUB) based on the PRA framework of gas-particle interactions (Pöschl-Rudich-Ammann, 2007). K2-SUB is applie...
Patterns of mercury dispersion from local and regional emission sources, rural Central Wisconsin, USA
mercury dispersion local and regional emission sources rural Central Wisconsin
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2010/8/13
Simultaneous real-time changes in mercury (Hg) speciation- reactive gaseous Hg (RGM), elemental Hg (Hg°), and fine particulate Hg (Hg-PM2.5), were determined from June to November, 2007, in ambient ai...
Observed and simulated global distribution and budget of atmospheric C2-C5 alkanes
global distribution atmospheric C2-C5 alkanes
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2010/8/12
The primary sources and atmospheric chemistry of C2-C5 alkanes were incorporated into the atmospheric chemistry general circulation model EMAC. Model output is compared with new observations from the ...
Technical Note: Fast two-dimensional GC-MS with thermal extraction for anhydro-sugars in fine aerosols
two-dimensional GC-MS thermal extraction anhydro-sugars fine aerosols
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2010/8/12
A fast two-dimensional gas chromatography (GC-MS) method that uses heart-cutting and thermal extraction (TE) and requires no chemical derivatization was developed for the determination of anhydro-suga...
Chemical characterisation of iron in dust and biomass burning aerosols during AMMA-SOP0/DABEX: implication for iron solubility
Chemical characterisation iron dust and biomass burning aerosols AMMA-SOP0/DABEX
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2010/8/12
The chemical composition and the soluble fraction were determined in aerosol samples collected during flights of AMMA-SOP0/DABEX campaign, which were conducted in the West African Sahel during dry sea...
Hygroscopicity and chemical composition of Antarctic sub-micrometre aerosol particles and observations of new particle formation
Hygroscopicity and chemical composition Antarctic sub-micrometre aerosol particles new particle formation
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2010/8/12
The Antarctic near-coastal sub-micrometre aerosol particle features in summer were characterised based on measured data on aerosol hygroscopicity, size distributions, volatility and chemical ion and o...
Detection of dust aerosol by combining CALIPSO active lidar and passive IIR measurements
dust aerosol CALIPSO active lidar passive IIR measurements
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2010/8/12
The version 2 Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) dust layer detection method, which is based only on lidar measurements, misclassified about 43% dust layers (...
NO3 radical measurements in a polluted marine environment: links to ozone formation
NO3 radical measurements a polluted marine environment ozone formation
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2010/8/12
Nighttime chemistry in polluted regions is dominated by the nitrate radical (NO3) including its direct reaction with natural and anthropogenic hydrocarbons, its reaction with NO2 to form N2O5, and sub...
Seasonal variations of concentrations and optical properties of water soluble HULIS collected in urban environments
Seasonal variations water soluble HULIS urban environments
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2010/8/12
Major contributors to the organic aerosol include water-soluble macromolecular compounds (e.g. HULISWS: Water Soluble Humic LIke Substances). The nature and sources of HULISWS are still largely unknow...
Airborne measurements of the spatial distribution of aerosol chemical composition across Europe and evolution of the organic fraction
Airborne measurements aerosol chemical composition Europe the organic fraction
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2010/8/12
The spatial distribution of aerosol chemical composition and the evolution of the Organic Aerosol (OA) fraction is investigated based upon airborne measurements of aerosol chemical composition in the ...
Impact of mineral dust on nitrate, sulfate, and ozone in transpacific Asian pollution plumes
mineral dust nitrate sulfate ozone transpacific Asian pollution plumes
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2010/8/12
We use a 3-D global chemical transport model (GEOS-Chem) to interpret aircraft observations of nitrate and sulfate partitioning in transpacific dust plumes during the INTEX-B campaign of April–May 200...
Greenhouse gas relationships in the Indian summer monsoon plume measured by the CARIBIC passenger aircraft
the Indian summer monsoon plume the CARIBIC passenger aircraft
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2010/8/12
During the Indian summer monsoon period 2008, regular measurement flights were performed by the CARIBIC aircraft between Germany and India. Measurements included whole air sampling and subsequent anal...
Impact of dust on tropospheric chemistry over polluted regions: a case study of the Beijing megacity
dust tropospheric chemistry polluted regions the Beijing megacity
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2010/8/12
The box model MECCA (Module Efficiently Calculating the Chemistry of the Atmosphere) is extended by incorporating detailed heterogeneous chemistry occurring on mineral aerosol surfaces. The model is u...
Temperature effect on physical and chemical properties of secondary organic aerosol from m-xylene photooxidation
Temperature effect physical and chemical properties secondary organic aerosol m-xylene photooxidation
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2010/8/12
The chemical and physical differences of secondary organic aerosol (SOA) formed at select isothermal temperatures (278 K, 300 K, and 313 K) are explored with respect to density, particle volatility, p...
Ozone response to emission changes: a modeling study during the MCMA-2006/MILAGRO Campaign
Ozone response emission changes the MCMA-2006/MILAGRO Campaign
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2010/8/12
The sensitivity of ozone production to precursor emissions was investigated under five different meteorological conditions in the Mexico City Metropolitan Area (MCMA) during the MCMA-2006/MILAGRO fiel...