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A regional scale modeling analysis of aerosol and trace gas distributions over...

Adhikary, B., G. Carmichael, S. Kulkarni, C. Wei, Y. Tang, A. D’Allura, M. Mena-Carrasco, D. Streets, Q. Zhang, B. Pierce, J. Al-Saadi, L. Emmons, G. Pfister, M. Avery, J. Barrick, D. R. Blake, W. H. Brune, R. C. Cohen, J. Dibb, A. Fried, B. Heikes, L. G. Huey, D. W. O’Sullivan, G. Sachse, R. E. Shetter, H. Singh, T. Campos, C. A. Cantrell, F. Flocke, E. J. Dunlea, J. Jimenez-Palacios, A. Weinheimer, J. D. Crounse, P. Wennberg, J. J. Schauer, E. A. Stone, D. Jaffe, and D. R. Reidmiller (2010), A regional scale modeling analysis of aerosol and trace gas distributions over the eastern Pacific during the INTEX-B field campaign, Atmos. Chem. Phys., 10, 2091-2115, doi:10.5194/acp-10-2091-2010.

The Sulfur Transport and dEposition Model (STEM) is applied to the analysis of observations obtained during the Intercontinental Chemical Transport ExperimentPhase B (INTEX-B), conducted over the eastern Pacific Ocean during spring 2006. Predicted trace gas and aerosol distributions over the Pacific are presented and discussed in terms of transport and source region contributions. Trace species distributions show a strong west (high) to east (low) gradient, with the bulk of the pollutant transport over the central Pacific occurring between ∼20◦ N and 50◦ N in the

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Tropospheric Composition Program (TCP)