<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Q. Chen</style></author><author><style face="normal" font="default" size="100%">Farmer, D. K.</style></author><author><style face="normal" font="default" size="100%">Rizzo, L. V.</style></author><author><style face="normal" font="default" size="100%">Pauliquevis, T.</style></author><author><style face="normal" font="default" size="100%">Kuwata, M.</style></author><author><style face="normal" font="default" size="100%">Karl, T. G.</style></author><author><style face="normal" font="default" size="100%">Guenther, A.</style></author><author><style face="normal" font="default" size="100%">Allan, J. D.</style></author><author><style face="normal" font="default" size="100%">Coe, H.</style></author><author><style face="normal" font="default" size="100%">Andreae, M. O.</style></author><author><style face="normal" font="default" size="100%">Poschl, U.</style></author><author><style face="normal" font="default" size="100%">Jimenez, J. L.</style></author><author><style face="normal" font="default" size="100%">Artaxo, P.</style></author><author><style face="normal" font="default" size="100%">Martin, S. T.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Submicron particle mass concentrations and sources in the Amazonian wet season (AMAZE-08)</style></title><secondary-title><style face="normal" font="default" size="100%">Atmospheric Chemistry and Physics</style></secondary-title><short-title><style face="normal" font="default" size="100%">Atmos. Chem. Phys.</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2015</style></year></dates><number><style face="normal" font="default" size="100%">7</style></number><volume><style face="normal" font="default" size="100%">15</style></volume><pages><style face="normal" font="default" size="100%">3687-3701</style></pages><isbn><style face="normal" font="default" size="100%">1680-7316</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Real-time mass spectra of the non-refractory species in submicron aerosol particles were recorded in a tropical rainforest in the central Amazon Basin during the wet season from February to March 2008, as a part of the Amazonian Aerosol Characterization Experiment (AMAZE-08). Organic material accounted on average for more than 80% of the non-refractory submicron particle mass concentrations during the period of measurements. There was insufficient ammonium to neutralize sulfate. In this acidic, isoprene-rich, HO2-dominant environment, positive-matrix factorization of the time series of particle mass spectra identified four statistical factors to account for the 99% of the variance in the signal intensities of the organic constituents. The first factor was identified as associated with regional and local pollution and labeled &quot;HOA&quot; for its hydrocarbon-like characteristics. A second factor was associated with long-range transport and labeled &quot;OOA-1&quot; for its oxygenated characteristics. A third factor, labeled &quot;OOA-2,&quot; was implicated as associated with the reactive uptake of isoprene oxidation products, especially of epoxydiols to acidic haze, fog, or cloud droplets. A fourth factor, labeled &quot;OOA-3,&quot; was consistent with an association with the fresh production of secondary organic material (SOM) by the mechanism of gasphase oxidation of biogenic volatile organic precursors followed by gas-to-particle conversion of the oxidation products. The suffixes 1, 2, and 3 on the OOA labels signify ordinal ranking with respect to the extent of oxidation represented by the factor. The process of aqueous-phase oxidation of water-soluble products of gas-phase photochemistry might also have been associated to some extent with the OOA-2 factor. The campaign-average factor loadings had a ratio of 1.4 : 1 for OOA-2 : OOA-3, suggesting the comparable importance of particle-phase compared to gas-phase pathways for the production of SOM during the study period.&lt;/p&gt;</style></abstract><accession-num><style face="normal" font="default" size="100%">WOS:000352957400004</style></accession-num><notes><style face="normal" font="default" size="100%">&lt;p&gt;Chen, Q. Farmer, D. K. Rizzo, L. V. Pauliquevis, T. Kuwata, M. Karl, T. G. Guenther, A. Allan, J. D. Coe, H. Andreae, M. O. Poeschl, U. Jimenez, J. L. Artaxo, P. Martin, S. T.&lt;/p&gt;</style></notes></record></records></xml>