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Aerosol Ageing in an Urban Plume – Implications for Climate and Health : Volume 10, Issue 8 (10/08/2010)

By Roldin, P.

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Book Id: WPLBN0003995536
Format Type: PDF Article :
File Size: Pages 50
Reproduction Date: 2015

Title: Aerosol Ageing in an Urban Plume – Implications for Climate and Health : Volume 10, Issue 8 (10/08/2010)  
Author: Roldin, P.
Volume: Vol. 10, Issue 8
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2010
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Pagels, J., Roldin, P., Löndahl, J., Massling, A., Swietlicki, E., Eriksson, A.,...Gustafsson, S. (2010). Aerosol Ageing in an Urban Plume – Implications for Climate and Health : Volume 10, Issue 8 (10/08/2010). Retrieved from http://cloud-library.org/


Description
Description: Division of Nuclear Physics, Lund University, 221 00, Lund, Sweden. The climate and health effects downwind of an urban area resulting from gaseous and particulate emissions within the city are as yet inadequately quantified. The aim of this work was to estimate these effects for Malmö city in Southern Sweden (population 280 000). The chemical and physical particle properties were simulated with a model for Aerosol Dynamics, gas phase CHEMistry and radiative transfer calculations (ADCHEM) following the trajectory movement from upwind Malmö, through the urban background environment and finally tens and hundreds of kilometers downwind Malmö. The model results were validated with measurements of the particle number size distribution and chemical composition. The total particle number concentration 50 km (~3 h) downwind in the center of the Malmö plume is about 3800 cm−3 and the Malmö contribution is roughly 35%. Condensation of nitric acid, ammonium and to a smaller extent oxidized organic compounds formed from the emissions in Malmö increases the secondary aerosol formation with a maximum of 0.6–0.7 μg/m3 6 to 18 h downwind of Malmö. The secondary mass contribution dominates over the primary soot contribution from Malmö already 2 to 3 h after the emissions and gives an enhanced total top of the atmosphere direct or indirect aerosol shortwave radiative forcing in the center of the urban plume ranging from −0.3 to −2.3 W m−2 depending on the distance from Malmö, and the cloud properties. It also gives an increased respiratory tract deposited mass dose, which increases with the distance downwind Malmö.

Summary
Aerosol ageing in an urban plume – implications for climate and health

Excerpt
Arneth, A., Niinemets, Ü., Pressley, S., Bäck, J., Hari, P., Karl, T., Noe, S., Prentice, I. C., Serça, D., Hickler, T., Wolf, A., and Smith, B.: Process-based estimates of terrestrial ecosystem isoprene emissions: incorporating the effects of a direct CO2-isoprene interaction, Atmos. Chem. Phys., 7, 31–53, doi:10.5194/acp-7-31-2007, 2007.; Chaix, B., Gustafsson, S., Jerrett, M., Kristersson, H., Lithman, T., Boalt, Å, and Merlo, J.: Children's exposure to nitrogen dioxide in Sweden: investigating environmental injustice in an egalitarian country, J. Epidemiol. Commun. H., 60, 234–241, 2006.; Doran, J. C., Barnard, J. C., Arnott, W. P., Cary, R., Coulter, R., Fast, J. D., Kassianov, E. I., Kleinman, L., Laulainen, N. S., Martin, T., Paredes-Miranda, G., Pekour, M. S., Shaw, W. J., Smith, D. F., Springston, S. R., and Yu, X.-Y.: The T1-T2 study: evolution of aerosol properties downwind of Mexico City, Atmos. Chem. Phys., 7, 1585–1598, doi:10.5194/acp-7-1585-2007, 2007.; Draxler, R. R. and Rolph, G. D.: HYSPLIT (Hybrid Single-Particle Lagrangian Integrated Trajectory) Model access via NOAA ARL READY Wedsite (http://www.arl.noaa.gov/ready/hysplit4.html), NOAA Air Resources Laboratory, Silver Spring, MD, 2003.; Eriksson, A.: Calibration and First Field Deployment of an Aerosol Mass Spectrometer. M. Sc dissertation at Department of Physics and Department of Design Sciences, Lund University, ISRN: LUTMDN/TMAT-5130-SE, 2009.; Gaydos, T. M., Pinder, R., Koo, B., Fahey, K. M., Yarwood, G., and Pandis, S. N.: Development and application of a three-dimensional aerosol chemical transport model, PMCAMx, Atmos. Environ., 41, 2594–2611, 2007.; Gustafsson S. Uppbyggnad och validering av emissionsdatabas avseende luftföroreningar för Skåne med basår. Licentiat Dissertation at National Environmental Research Institute, Lund University, no. 9, 2001.; Henze, D. K., Seinfeld, J. H., Ng, N. L., Kroll, J. H., Fu, T.-M., Jacob, D. J., and Heald, C. L.: Global modeling of secondary organic aerosol formation from aromatic hydrocarbons: high- vs. low-yield pathways, Atmos. Chem. Phys., 8, 2405–2420, doi:10.5194/acp-8-2405-2008, 2008.; Hodzic, A., Vautard, R., Chazette, P., Menut, L., and Bessagnet, B.: Aerosol chemical and optical properties over the Paris area within ESQUIF project, Atmos. Chem. Phys., 6, 3257–3280, doi:10.5194/acp-6-3257-2006, 2006.; Hodzic, A., Jimenez, J. L., Madronich, S., Aiken, A. C., Bessagnet, B., Curci, G., Fast, J., Lamarque, J.-F., Onasch, T. B., Roux, G., Schauer, J. J., Stone, E. A., and Ulbrich, I. M.: Modeling organic aerosols during MILAGRO: importance of biogenic secondary organic aerosols, Atmos. Chem. Phys., 9, 6949–6981, doi:10.5194/acp-9-6949-2009, 2009.; Horvath H. Influence of atmospheric aerosols upon the global radiation balance. In: Harrison, R.M, Van Greiken, R. (Eds.): Atmospheric Particles IUPAC Series on Analytical and Physical Chemistry of Environmental Systems, vol. 5., Wiley, New York, USA, 1998.; Hussein, T., Dal Maso, M., Petaja, T., Koponen, I. K., Paatero, P., Aalto, P. P., Hämeri, K., and Kulmala, M.: Evaluation of an automatic algorith for fitting the particle number size distributions, Boreal Environ. Res., 10, 337–355, 2005.; ICRP: Human respiratory tract model for radiological protection. ICRP publication 66, International Comission on Radiological Protection. Oxford: Elsevier Science, 1995.; Jacobson, M. Z.: A Solution to the Problem of Nonequilibrium Acid/Base Gas-Particle Transfer at Long Time Step. Aerosol Science and Technology, 39, 92–103, 2005a.; Jacobson, M. Z.: Fundamentals of Atmospheric Modelling (2nd edn.), Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, ISBN: 0 521 54865 9, 2005b.; Kristensson, A., Dal Maso, M., Swietlicki, E., Hussein, T., Zhou, J., Kerminen, V.-M., and Kulmala, M.: Characterization of new particle formation events at a backgro

 

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