Aerosol Formation
A new oxidation flow reactor for measuring secondary aerosol formation of rapidly changing emission sources
... Secondary Aerosol Reactor ...secondary aerosol formation potential of rapidly chang- ing emission sources than the state-of-the-art oxidation flow reactors, due to its improved flow conditions and ...
19
Chamber studies of secondary organic aerosol formation
... to aerosol formation. In chapter 4 the potential for aerosol growth via heterogeneous reactions for a number of small carbonyls is examined by measuring changes in particle volume and composition ...
31
Isoprene Oxidation Mechanisms and Secondary Organic Aerosol Formation Under HO2 Dominated Conditions
... organic aerosol formation, the explicit mechanism is presented pri- marily for use in box modeling, although an accompanying reduced mechanism condenses the model down to a size more manageable for chemical ...
602
Impact of Aerosol-Cloud Cycling on Aqueous Secondary Organic Aerosol Formation
... 40. Budisulistiorini, S.H.; Li, X.; Bairai, S.T.; Renfro, J.; Liu, Y.; Liu, Y.J.; Mckinney, K.A.; Martin, S.T.; Mcneill, V.F.; Pye, H.O.T.; et al. Examining the effects of anthropogenic emissions on isoprene-derived ...
21
Aerosol size distribution and radiative forcing response to anthropogenically driven historical changes in biogenic secondary organic aerosol formation
... with aerosol microphysics schemes, and they tend to underpre- dict ultrafine particle growth when lab-based volatility dis- tributions are used (Pierce et ...SOA formation rates for each simulation). ...
22
Investigation of Fundamental Processes Governing Secondary Organic Aerosol Formation in Laboratory Chambers
... organic aerosol (SOA) constitutes a major fraction of sub-micrometer atmospheric particulate ...SOA formation observed in laboratory chambers into robust ...SOA formation of losses of semi-volatile ...
303
Investigations of Secondary Organic Aerosol Formation in Laboratory Chambers
... bulk aerosol chemical composition using aerosol mass spectrometry have correlated an increase in particle oxygen content, reported as oxygen-to-carbon ratio, fraction of organic mass at m/z 44, or average ...
183
Characterization of aerosol photooxidation flow reactors: heterogeneous oxidation, secondary organic aerosol formation and cloud condensation nuclei activity measurements
... As is evident in Figs. 6 and 7, at comparable OH expo- sures, the SOA O/C ratio and yield obtained with the flow tubes are different from those obtained in the smog cham- ber for m-xylene and to a lesser extent for ...
17
Chamber Studies and Modeling of Secondary Organic Aerosol Formation
... SOA formation observed in the unsaturated aldehyde systems, it appears that the chemical environment of the carbon atom adjacent to the aldehyde group plays an important role in determining the extent of SOA ...
386
Regional Air Quality and Climate Modeling using WRF/Chem with Improved Model Representations of Organic Aerosol Formation and Aerosol Activation.
... 66 Table A2, the correlation between AOD and CCN is also high, with Corr values of 0.78 to 0.89 for all seasons. AOD is positively correlated to PWV in MAM (0.52) but has poor correlation with other seasons (< 0.5). ...
513
Chemistry of Secondary Organic Aerosol Formation
... The 1,4-hydroxycarbonyl (OHCARB, Figure 2g) is gen- erated from the hydroxy hydroperoxide (OHROOH, Figure 2f) in greater concentration than its precursor. As discussed earlier, the 1,4-hydroxycarbonyl may be formed via ...
250
DMS oxidation and sulfur aerosol formation in the marine troposphere : A focus on reactive halogen and multiphase chemistry
... sulfate–nitrate–ammonium aerosol simula- tion is fully coupled to gas-phase chemistry (Park et ...with aerosol thermodynamics described in Pye et ...salt aerosol simulation is described in Jaeglé et ...
22
DMS oxidation and sulfur aerosol formation in the marine troposphere: a focus on reactive halogen and multiphase chemistry
... for aerosol and CCN number ...particle formation, but will impact the aerosol size distribution with implications for cloud microphysical properties (Kreidenweis and Seinfeld, 1988; Kaufman and ...
32
simpleGAMMA v1.0 – a reduced model of secondary organic aerosol formation in the aqueous aerosol phase (aaSOA)
... or aerosol water, followed by aqueous-phase chemical processing, has received increased attention as a possibly important source of SOA (Blando and Turpin, 2000; Ervens et ...
9
Experimental and computational studies of secondary organic aerosol formation
... Secondary organic aerosol SOA is formed when products resulting from the gas-phase oxidation of a parent organic species partition to the particle phase.. This partitioning can occur via[r] ...
368
An Analysis of a Fire Resulting from a Traffic Accident
... flashing, aerosol formation and initial air entrainment); a pool evaporation model; models of the atmospheric dispersion of a vapour cloud and jet dispersion; a thermal radiation model for different fire ...
13
Modeling the Effect of Vapor Wall Deposition on the Formation of Secondary Organic Aerosol in Chamber Studies
... and aerosol formation studies, are subject to particle and vapor wall deposition, processes that need to be accounted for in order to accurately determine secondary organic aerosol (SOA) mass ...seed ...
346
Aerosol optical properties derived from POLDER-3/PARASOL (2005–2013) over the western Mediterranean Sea – Part 1: Quality assessment with AERONET and in situ airborne observations
... the aerosol population, resulting from the differ- ent sources contributing to the Mediterranean aerosol (desert dust, marine, urban, and industrial pollution, and biomass ...Maritime Aerosol Network ...
24
umi-unc-3249.pdf
... SOA formation to different degrees between neutral and acidic sulfate seed ...sulfate formation would be major pathways for SOA formation and occur rapidly in the beginning when the inorganic acid is ...
148
Toward a comprehensive global electric circuit model: Atmospheric conductivity and its variability in CESM1(WACCM) model simulations
... GCRs, aerosol distributions, and clouds for their conduc- tivity ...The aerosol data were based on the GADS (Global Aerosol Data Set) database and assumed size distri- ...
12