Transport of Asian air pollution to North America
1999; American Geophysical Union; Volume: 26; Issue: 6 Linguagem: Inglês
10.1029/1999gl900100
ISSN1944-8007
AutoresDan Jaffe, Theodore L. Anderson, D. S. Covert, Robert A. Kotchenruther, Barbara Trost, Jen Danielson, William R. Simpson, Terje K. Berntsen, Sigrún N. Karlsdóttir, D. R. Blake, Joyce M. Harris, Greg Carmichael, Itsushi Uno,
Tópico(s)Atmospheric Ozone and Climate
ResumoUsing observations from the Cheeka Peak Observatory in northwestern Washington State during March‐April, 1997, we show that Asian anthropogenic emissions significantly impact the concentrations of a large number of atmospheric species in the air arriving to North America during spring. Isentropic back‐trajectories can be used to identify possible times when this impact will be felt, however trajectories alone are not sufficient to indicate the presence of Asian pollutants. Detailed chemical and meteorological data from one of these periods (March 29th, 1997) indicates that the surface emissions were lifted into the free troposphere over Asia and then transported to North America in ∼6 days.
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