World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Multi-year (2004–2008) Record of Nonmethane Hydrocarbons and Halocarbons in New England: Seasonal Variations and Regional Sources : Volume 10, Issue 1 (18/01/2010)

By Russo, R. S.

Click here to view

Book Id: WPLBN0003995314
Format Type: PDF Article :
File Size: Pages 52
Reproduction Date: 2015

Title: Multi-year (2004–2008) Record of Nonmethane Hydrocarbons and Halocarbons in New England: Seasonal Variations and Regional Sources : Volume 10, Issue 1 (18/01/2010)  
Author: Russo, R. S.
Volume: Vol. 10, Issue 1
Language: English
Subject: Science, Atmospheric, Chemistry
Collection: Periodicals: Journal and Magazine Collection
Subcollection: Copernicus GmbH
Historic
Publication Date:
2010
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Description
Description: Climate Change Research Center, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH 03824, UK. Multi-year time series records of C2-C6 alkanes, C2-C4 alkenes, ethyne, isoprene, C6-C8 aromatics, trichloroethene (C2HCl3), and tetrachloroethene (C2Cl4) from canister samples collected during January 2004–February 2008 at the University of New Hampshire (UNH) AIRMAP Observatory at Thompson Farm (TF) in Durham, NH are presented. The objectives of this work are to identify the sources of nonmethane hydrocarbons (NMHCs) and halocarbons observed at TF, characterize the seasonal and interannual variability in ambient mixing ratios and sources, and estimate regional emission rates of NMHCs. Analysis of correlations and comparisons with emission ratios indicated that a ubiquitous and persistent mix of emissions from several anthropogenic sources is observed throughout the entire year. The highest C2-C8 anthropogenic NMHC mixing ratios were observed in mid to late winter. Following the springtime minimums, the C3-C6 alkanes, C7-C8 aromatics, and C2HCl3 increased in early to mid summer, presumably reflecting enhanced evaporative emissions. Mixing ratios of C2Cl4 and C2HCl3 decreased by 0.7±0.2 and 0.3±0.05 pptv/year, respectively, which is indicative of reduced usage and emissions of these halogenated solvents. Emission rates of C3-C8 NMHCs were estimated to be 109 to 1010 molecules cm-2 s-1 in winter 2006. The emission rates extrapolated to the state of New Hampshire and New England were ~2–60 Mg/day and ~12–430 Mg/day, respectively. The 2002 and 2005 EPA National Emissions Inventory (NEI) emission rates of benzene, ethylbenzene, and xylenes for New Hampshire agreed within ±<5–20% of the emission rates estimated from the TF data, while toluene emissions were overestimated (20–35%) in both versions of the NEI.

Summary
Multi-year (2004–2008) record of nonmethane hydrocarbons and halocarbons in New England: seasonal variations and regional sources

Excerpt
Atkinson, R., Baulch, D. L., Cox, R. A., Crowley, J. N., Hampson, R. F., Hynes, R. G., Jenkin, M. E., Rossi, M. J., Troe, J., and IUPAC Subcommittee, : Evaluated kinetic and photochemical data for atmospheric chemistry: Volume II – gas phase reactions of organic species, Atmos. Chem. Phys., 6, 3625–4055, 2006.; Baker, A. K., Beyersdorf, A. J., Doezema, L. A., Katzenstein, A., Meinardi, S., Simpson, I. J., Blake, D. R., and Rowland, F. S.: Measurements of nonmethane hydrocarbons in 28 United States cites, Atmos. Environ., 42, 170–182, 2008.; Barletta, B., Meinardi, S., Simpson, I. J., Khwaja, H. A., Blake, D. R., and Rowland, F. S.: Mixing ratios of volatile organic compounds (VOCs) in the atmosphere of Karachi, Pakistan, Atmos. Environ., 36, 3429–3443, 2002.; Blake, D. R. and Rowland, F. S.: Urban leakage of liquefied petroleum gas and its impact on Mexico City air quality, Science, 269, 953–956, 1995.; Barletta, B., Meinardi, S., Simpson, I. J., Zou, S. C., Rowland, F. S., and Blake, D. R.: Ambient mixing ratios of nonmethane hydrocarbons (NMHCs) in two major urban centers of the Pearl River Delta (PRD) region: Guangzhou and Dongguan, Atmos. Environ., 42, 4393–4408, doi:10.1016/j.atmosenv.2008.01.028, 2008.; Barnes, D. H., Wofsy, S. C., Fehlau, B. P., Gottlieb, E. W., Elkins, J. W., Dutton, G. S., and Montzka, S. A.: Urban/industrial pollution for the New York City – Washington, DC, corridor, 1996–1998: 1. Providing independent verification of CO and PCE emissions inventories, J. Geophys. Res., 108, 4185, doi:10.1029/2001jd001116, 2003.; Boissard, C., Bonsang, B., Kanakidou, M., and Lambert, G.: TROPOZ II: Global distributions and budgets of methane and light hydrocarbons, J. Atmos. Chem., 25, 115–148, 1996.; Bottenheim, J. W. and Shepherd, M. F.: C2-C6 hydrocarbon measurements at 4 rural locations across Canada, Atmos. Environ., 29, 647–664, 1995.; Bowman, F. M. and Seinfeld, J. H.: Atmospheric chemistry of alternate fuels and reformulated gasoline components, Prog. Energ. Combust., 21, 387–417, 1995.; Carter, W. P. L.: Development of ozone reactivity scales for volatile organic compounds, J. Air Waste Manage. Assoc., 44, 881–899, 1994.; Carter, W. P. L.: Development of the SAPRC-07 chemical mechanism and updated ozone reactivity scales, Final report to the California Air Resources Board, Contract No. 03–318, 2008 (available at: http://www.cert.ucr.edu/ carter/SAPRC/index.htm).; Chen, M., Talbot, R., Mao, H. T., Sive, B., Chen, J. J., and Griffin, R. J.: Air mass classification in coastal New England and its relationship to meteorological conditions, J. Geophys. Res., 112, D10S05, doi:10.1029/2006jd007687, 2007.; Chen, T. Y., Simpson, I. J., Blake, D. R., and Rowland, F. S.: Impact of the leakage of liquefied petroleum gas (LPG) on Santiago air quality, Geophys. Res. Lett., 28, 2193–2196, 200

 

Click To View

Additional Books


  • Global Contrail Radiative Forcing and th... (by )
  • Influence of Airmass Transport Events on... (by )
  • Long-term Changes and Variability in a T... (by )
  • Impact of Open Crop Residual Burning on ... (by )
  • Aerosol Physicochemical Properties and I... (by )
  • Secondary Organic Aerosol Formation from... (by )
  • Estimating Neutral Nanoparticle Steady-s... (by )
  • Size Resolved Mass Concentration and Ele... (by )
  • Enhancement and Depletion of Lower/Middl... (by )
  • Atmospheric Transport and Deposition of ... (by )
  • Long Term Halocarbon Observations from A... (by )
  • Characterization of Aerosol and Cloud Wa... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.