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A Tale of Two Capitols – Beijing, PRC and Washington, USA

A Tale of Two Capitols – Beijing, PRC and Washington, USA. Summary by Thomas A. Cahill, Professor of Physics (recalled) and Atmospheric Sciences (emeritus) and Head, DELTA * Group, University of California, Davis 95616 (530) 752 4674 also 752 1120 tacahill@ucdavis.edu

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A Tale of Two Capitols – Beijing, PRC and Washington, USA

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  1. A Tale of Two Capitols – Beijing, PRC and Washington, USA Summary by Thomas A. Cahill, Professor of Physics (recalled) and Atmospheric Sciences (emeritus) and Head, DELTA* Group, University of California, Davis 95616 (530) 752 4674 also 752 1120 tacahill@ucdavis.edu http://delta.ucdavis.edu * Detection and Evaluation of Long-range Transport of Aerosols

  2. PM10 Mass • Beijing • July 2008 BBC data 129.4 g/m3 (note: no dust storms) • Washington • 1992 IMPROVE data 26.5 g/m3 • 1995 IMPROVE data 26.8 g/m3 References • Malm, W.C., Sisler, J.F., Huffman, D., Eldred, R.A. and Cahill, T.A.. Spatial and seasonal trends in particle concentration and optical extinction in the United States. 1994 Journal of Geophysical Research, VOL. 99, No. D1, 1347-1370, January 20, 1994 • Eldred, Robert A. and Thomas A. Cahill. Trends in elemental concentrations of fine particles at remote sites in the United States. 1994 Atmospheric Environment, Vol. 28, No. 5, pp. 1009-1019. • Note: 1992 was about the peak of the US regional sulfate haze prior to improvements from the Clean Air Act Amendments of 1991. • For ACE- Asia, Seinfeld, J.H., Carmichael, G.R., Arimoto, R, Conant, W. C., Brechtel, F. J., Bates, T. S., Cahill, T. A., Clarke, A.D., Flatau, B.J., Huebert, B.J., Kim, J., Markowicx, K.M., Masonis, S.J., Quinn, P.K., Russell, L.M., Russell, P.B., Shimizu, A., Shinozuka, Y., Song, C.H., Tang, Y., Uno, I., Vogelmann, A.M., Weber, R.J., Woo, J-H., Zhang, Y.ACE-Asia: Regional Climatic and Atmospheric Chemical Effects of Asian Dust and Pollution,Bulletin American Meteorological Society 85 (3): 367+ MARCH 2004

  3. Major Species g/m3 (micrograms per cubic meter of air)

  4. Major Species g/m3 (micrograms per cubic meter of air)

  5. Trace metals ng/m3 (= 1/1000 g/m3)

  6. Trace metals ng/m3 (= 1/1000 g/m3)

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