Search Results - "Chow, J. C."

Impact of biomass burning on haze pollution in the Yangtze River delta, China: a case study in summer 2011 by Cheng, Z, Wang, S, Fu, X, Watson, J. G, Jiang, J, Fu, Q, Chen, C, Xu, B, Yu, J, Chow, J. C, Hao, J

“…Open biomass burning is an important source of air pollution in China and globally. Joint observations of air pollution were conducted in five cities…”
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Multi-wavelength optical measurement to enhance thermal/optical analysis for carbonaceous aerosol by Chen, L.-W. A, Chow, J. C, Wang, X. L, Robles, J. A, Sumlin, B. J, Lowenthal, D. H, Zimmermann, R, Watson, J. G

“…A thermal/optical carbon analyzer equipped with seven-wavelength light source/detector (405–980 nm) for monitoring spectral reflectance (R) and transmittance…”
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Characterization and source apportionment of atmospheric organic and elemental carbon during fall and winter of 2003 in Xi'an, China by Cao, J. J., Wu, F., Chow, J. C., Lee, S. C., Li, Y., Chen, S. W., An, Z. S., Fung, K. K., Watson, J. G., Zhu, C. S., Liu, S. X.

“…Continuous measurements of atmospheric organic and elemental carbon (OC and EC) were taken during the high-pollution fall and winter seasons at Xi'an, Shaanxi…”
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Spatial and seasonal distributions of carbonaceous aerosols over China by Cao, J. J., Lee, S. C., Chow, J. C., Watson, J. G., Ho, K. F., Zhang, R. J., Jin, Z. D., Shen, Z. X., Chen, G. C., Kang, Y. M., Zou, S. C., Zhang, L. Z., Qi, S. H., Dai, M. H., Cheng, Y., Hu, K.

“…Simultaneous measurements of atmospheric organic and elemental carbon (OC and EC) were taken during winter and summer seasons at 2003 in 14 cities in China…”
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Lead concentrations in fine particulate matter after the phasing out of leaded gasoline in Xi’an, China by Xu, H.M., Cao, J.J., Ho, K.F., Ding, H., Han, Y.M., Wang, G.H., Chow, J.C., Watson, J.G., Khol, S.D., Qiang, J., Li, W.T.

“…Daily concentrations of lead (Pb) were determined for PM 2.5 samples collected from an urban location in Xi’an, China from 2007 to 2009 to assess the effects…”
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Concentrations and source contributions of particulate organic matter before and after implementation of a low emission zone in Munich, Germany by Qadir, R.M., Abbaszade, G., Schnelle-Kreis, J., Chow, J.C., Zimmermann, R.

“…Within the Munich low emission zone (LEZ), samples of PM2.5 were collected before (2006/2007) and after (2009/2010) the implementation of the LEZ. The samples…”
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Wintertime particulate pollution episodes in an urban valley of the Western US: a case study by Chen, L.-W. A, Watson, J. G, Chow, J. C, Green, M. C, Inouye, D, Dick, K

“…This study investigates the causes of elevated PM2.5 episodes and potential exceedences of the US National Ambient Air Quality Standards (NAAQS) in Truckee…”
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Quantification of PM2.5 organic carbon sampling artifacts in US networks by Chow, J C, Watson, J G, Chen, L.-W A, Rice, J, Frank, N H

“…Field blanks (bQF) and backup filters (quartz-fiber behind quartz-fiber filter; QBQ) have been adopted by US long-term air quality monitoring networks to…”
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Moisture effects on carbon and nitrogen emission from burning of wildland biomass by Chen, L.-W. A., Verburg, P., Shackelford, A., Zhu, D., Susfalk, R., Chow, J. C., Watson, J. G.

“…Carbon (C) and nitrogen (N) released from biomass burning have multiple effects on the Earth's biogeochemical cycle, climate change, and ecosystem. These…”
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Chemically-speciated on-road PM₂.₅ motor vehicle emission factors in Hong Kong by Cheng, Y, Lee, S.C, Ho, K.F, Chow, J.C, Watson, J.G, Louie, P.K.K, Cao, J.J, Hai, X

“…PM₂.₅ (particle with an aerodynamic diameter less than 2.5µm) was measured in different microenvironments of Hong Kong (including one urban tunnel, one Hong…”
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Decreases in elemental carbon and fine particle mass in the United States by Murphy, D. M., Chow, J. C., Leibensperger, E. M., Malm, W. C., Pitchford, M., Schichtel, B. A., Watson, J. G., White, W. H.

“…Observations at national parks and other remote sites show that average elemental carbon and fine particle mass concentrations in the United States both…”
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Photoacoustic optical properties at UV, VIS, and near IR wavelengths for laboratory generated and winter time ambient urban aerosols by Gyawali, M, Arnott, W. P, Zaveri, R. A, Song, C, Moosmüller, H, Liu, L, Mishchenko, M. I, Chen, L.-W. A, Green, M. C, Watson, J. G, Chow, J. C

“…We present the laboratory and ambient photoacoustic (PA) measurement of aerosol light absorption coefficients at ultraviolet wavelength (i.e., 355 nm) and…”
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Variability of organic and elemental carbon, water soluble organic carbon, and isotopes in Hong Kong by Ho, K. F., Lee, S. C., Cao, J. J., Li, Y. S., Chow, J. C., Watson, J. G., Fung, K.

“…To determine the levels and variations of carbonaceous aerosol in Hong Kong, PM2.5 and PM10 samples were collected by high volume (Hi-vol) samplers at three…”
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Evaluation of organic markers for chemical mass balance source apportionment at the Fresno Supersite by Chow, J. C., Watson, J. G., Lowenthal, D. H., Chen, L. W. A., Zielinska, B., Mazzoleni, L. R., Magliano, K. L.

“…Sources of PM2.5 at the Fresno Supersite during high PM2.5 episodes occurring from 15 December 2000–3 February 2001 were estimated with the Chemical Mass…”
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Hyphenation of a EC / OC thermal–optical carbon analyzer to photo-ionization time-of-flight mass spectrometry: an off-line aerosol mass spectrometric approach for characterization of primary and secondary particulate matter by Diab, J, Streibel, T, Cavalli, F, Lee, S. C, Saathoff, H, Mamakos, A, Chow, J. C, Chen, L.-W. A, Watson, J. G, Sippula, O, Zimmermann, R

“…Source apportionment and characterization of primary and secondary aerosols remains a challenging research field. In particular, the organic composition of…”
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Size-differentiated source profiles for fugitive dust in the Chinese Loess Plateau by Cao, J.J., Chow, J.C., Watson, J.G., Wu, F., Han, Y.M., Jin, Z.D., Shen, Z.X., An, Z.S.

“…Size-differentiated fugitive dust chemical source profiles are determined for the Chinese Loess Plateau, a major source of Asian dust. Fifteen loess samples at…”
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Characteristics and source apportionment of PM₁ emissions at a roadside station by Cheng, Y, Zou, S.C, Lee, S.C, Chow, J.C, Ho, K.F, Watson, J.G, Han, Y.M, Zhang, R.J, Zhang, F, Yau, P.S, Huang, Y, Bai, Y, Wu, W.J

“…The mass concentrations of PM₁ (particles less than 1.0μm in aerodynamic diameter), organic carbon (OC), elemental carbon (EC), water-soluble ions, and up to…”
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Elemental carbon in urban soils and road dusts in Xi'an, China and its implication for air pollution by Han, Y.M., Cao, J.J., Chow, J.C., Watson, J.G., An, Z.S., Liu, S.X.

“…Increasing evidence confirms that elemental carbon (EC) is not only a light-absorbing constituent that warms the atmosphere but also a significant…”
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Refining temperature measures in thermal/optical carbon analysis by Chow, J. C., Watson, J. G., Chen, L.-W. A., Paredes-Miranda, G., Chang, M.-C. O., Trimble, D., Fung, K. K., Zhang, H., Zhen Yu, J.

“…Thermal/optical methods have been widely used for quantifying total carbon (TC), organic carbon (OC), and elemental carbon (EC) in ambient and source…”
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Organic aerosols in the southeastern United States: Speciated particulate carbon measurements from the SEARCH network, 2006–2010 by Blanchard, C.L., Chow, J.C., Edgerton, E.S., Watson, J.G., Hidy, G.M., Shaw, S.

“…This study describes and analyzes measurements of 119 non-polar organic compounds in PM2.5 samples from three urban sites in the Southeastern Aerosol Research…”
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