World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Gem/Pops: a Global 3-d Dynamic Model for Semi-volatile Persistent Organic Pollutants – Part 2: Global Transports and Budgets of Pcbs : Volume 7, Issue 15 (01/08/2007)

By Huang, P.

Click here to view

Book Id: WPLBN0003989923
Format Type: PDF Article :
File Size: Pages 11
Reproduction Date: 2015

Title: Gem/Pops: a Global 3-d Dynamic Model for Semi-volatile Persistent Organic Pollutants – Part 2: Global Transports and Budgets of Pcbs : Volume 7, Issue 15 (01/08/2007)  
Author: Huang, P.
Volume: Vol. 7, Issue 15
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2007
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Description
Description: Air Quality Research Division, Science & Technology Branch, Environment Canada, 4905 Dufferin Street, Toronto, Ontario M3H 5T4, Canada. Global transports and budgets of three PCBs were investigated with a 3-D dynamic model for semi-volatile persistent organic pollutants – GEM/POPs. Dominant pathways were identified for PCB transports in the atmosphere with a transport flux peaking below 8 km for gaseous and 14 km for particulate PCB28, and peaking below 4 km for gaseous and 6 km for particulate PCB180. The inter-continental transports of PCBs in the Northern Hemisphere (NH) are dominated in the zonal direction with their route changes regulated seasonally by the variation of westerly jet. The transport pathways from Europe and North Atlantic contributed the most PCBs to the Arctic. Inter-hemispheric transports of PCBs originated from the regions of Europe, Asia and North America in three different flow-paths, accompanying with easterly jet, Asian monsoon winds and trade winds. PCBs from the Southern Hemisphere (SH) could also be exported into the NH. According to the PCB emissions of year 2000, Europe, North America and Asia are the three largest sources of the three PCBs, contributing to the global background concentrations in the atmosphere, soil and water. Globally, PCB28 in soil and water has become a comparable source to the anthropogenic emissions while heavier PCBs such as PCB153 and 180 are still transporting into soil and water. For all three congeners, particulate PCBs are concentrated in the higher levels than gaseous PCBs. More than half of the particulate PCB28 could reach up to the stratosphere, while most of the heavier counter-parts (PCB153 and PCB180) are stored in the troposphere including boundary layer with more than 99% gaseous PCB180 below 6 km.

Summary
GEM/POPs: a global 3-D dynamic model for semi-volatile persistent organic pollutants – Part 2: Global transports and budgets of PCBs

Excerpt
Breivik, K., Sweetman, A., Pacyna, J. M., and Jones, K. C.: Towards a global historical emission inventory for selected PCB congeners – a mass balance approach 2. Emissions, Sci. Total Environ., 290, 199–224, 2002.; Côté, J., Gravel, S., Méthot, A., Patoine, A., Roch, M., and Staniforth, A.: The operational CMC-MRB Global Environmental Multiscale (GEM) model: Part I – Design considerations and formulation, Mon. Wea. Rev., 126, 1373–1395, 1998.; Gong, S. L., Barrie, L. A., Blanchet, J.-P., Salzen, K. v., Lohmann, U., Lesins, G., Spacek, L., Zhang, L. M., Girard, E., Lin, H., Leaitch, R., Leighton, H., Chylek, P., and Huang, P.: Canadian Aerosol Module: A size-segregated simulation of atmospheric aerosol processes for climate and air quality models 1. Module development, J. Geophys. Res., 108, 4007, doi:10.1029/2001JD002002, 2003.; Gong, S. L., Huang, P., Zhao, T. L., Sahsuvar, L., Barrie, L. A., Kaminski, J. W., Li, Y. F., and Niu, T.: GEM/POPs: A Global 3-D Dynamic Model for Semi-volatile Persistent Organic Pollutants 1. Model description and evaluations, Atmos. Chem. Phys., 2007. \blackbox\bf Will be updated by the Production Office.; Hansen, K. M., Christensen, J. H., Brandt, J., Frohn, L. M., and Geels, C.: Modelling atmospheric transport persistent organic pollutants in Northern Hemisphere with a 3-D dynamical model: DEHM-POP, Atmos. Chem. Phys., 4, 1339–1369, 2005.; Harrad, S. J., Sewart, A. P., Alcock, R., Boumphrey, R., Burnett, V., Duarte-Davidson, R., Halsall, C., Sanders, G., Waterhouse, K., Wild, S. R., and Jones, K.: Polychlorinated Biphenyls (PCBs) in the British Environment: Sinks, Sources and Temporal Trends, Environ. Pollut., 85, 131–146, 1994.; Hung, H., Blanchard, P., Halsall, C. J., Bidleman, T. F., Stern, G. A., Fellin, P., Muir, D. C. G., Barrie, L. A., Jantunen, L. M., Helm, P. A., Ma, J., and Konoplev, A.: Temporal and spatial variabilities of atmospheric polychlorinated biphenyls (PCBs), organochlorine (OC) pesticides and polycyclic aromatic hydrocarbons (PAHs) in the Canadian Arctic: Results from a decade of monitoring, Sci. Total Environ., 342, 119–144, 2005a.; Hung, H., Lee, S. C., Wania, F., Blanchard, P., and Brice, K.: Measuring and simulating atmospheric concentration trends of polychlorinated biphenyls in the Northern Hemisphere, Atmos. Environ., 39, 6502–6512, 2005b.; Jaward, F. M., Barber, J. L., Booij, K., Dachs, J., Lohmann, R., and Jones, K. C.: Evidence for dynamic air-water coupling and cycling of persistent organic pollutants over the open Atlantic Ocean, Environ. Sci. Technol., 38, 2617–2625, 2004.; Jurado, E., Jaward, F., Lohmarm, R., Jones, K. C., Simo, R., and Dachs, J.: Wet deposition of persistent organic pollutants to the global oceans, Environ. Sci. Technol., 39, 2426–2435, 2005.; Jurado, E., Jaward, F. M., Lohmann, R., Jones, K. C., Simo, R., and Dachs, J.: Atmospheric dry deposition of persistent organic pollutants to the Atlantic and inferences for the global oceans, Environ. Sci. Technol., 38, 5505–5513, 2004.; Koziol, A. S. and Pudykiewicz, J. A.: Global-scale environmental transport of persistent organic pollutants, Chemosphere, 45, 1181–1200, 2001.; Ma, J., Daggupaty, S., Harner, T., and Li, Y.-F.: Impacts of Lindane usage in the Canadian prairies on the Great Lakes ecosystem, 1. Coupled atmospheric transport model and modeled concentrations in air and soil, Environ. Sci. Technol., 37(17), 3774–3781, 2003.; Mackay, D.: Multimedia Environmental Models: The Fugacity Approach, CRC Press, New York, 2001.; Mackay, D., Webster, E., and Gouin, T.: Partitioning, Persistence and Long-Range Transport, in: Chemicals in the Environment: Assessing and Managing Risk, edited by: Hester, R. E. and Harrison, R. M., Royal Society of Chemistry, Cambridge, UK, 2006.; MacLeod, M., Riley, W. J., and McKone, T.: Assessing the Influence of Climate Variability on Atmos

 

Click To View

Additional Books


  • Size-resolved Measurements of Brown Carb... (by )
  • Odin/Osiris Observations of Stratospheri... (by )
  • Effects of Relative Humidity on Aerosol ... (by )
  • Constraining the N2O5 Uv Absorption Cros... (by )
  • Energetic Particle Induced Inter-annual ... (by )
  • Extremely Large Anthropogenic Aerosol Co... (by )
  • Microphysical Properties and High Ice Wa... (by )
  • In-situ Measurements of Atmospheric Hydr... (by )
  • Effect of Humidity on the Composition an... (by )
  • Trajectory Mapping of Middle Atmospheric... (by )
  • Seven Year Particulate Matter Air Qualit... (by )
  • Direct Determination of Highly Size-reso... (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.