© Author(s) 2007. This work is licensed under a Creative Commons License. Atmospheric Chemistry and Physics GEM/POPs: a global 3-D dynamic model for semi-volatile persistent

• Main Authors: P. Huang, S. L. Gong, T. L. Zhao, L. Neary, L. A. Barrie
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2007
• Subjects: Arctic; North Atlantic
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.611.3549; http://www.atmos-chem-phys.org/7/4015/2007/acp-7-4015-2007.pdf

Abstract. Global transports and budgets of three PCBs were investigated with a 3-D dynamic model for semi-volatile per-sistent 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 trans-ports of PCBs in the Northern Hemisphere (NH) are dom-inated in the zonal direction with their route changes regu-lated seasonally by the variation of westerly jet. The trans-port 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