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Intercontinental Transport of Aerosols: Implication for Regional Air QualityAerosol particles, also known as PM2.5 (particle diameter less than 2.5 microns) and PM10 (particle diameter less than 10 microns), is one of the key atmospheric components that determine ambient air quality. Current US air quality standards for PM10 (particles with diameter < 10 microns) and PM2.5 (particles with diameter 2.5 microns) are 50 pg/cu m and 15 pg/cu m, respectively. While local and regional emission sources are the main cause of air pollution problems, aerosols can be transported on a hemispheric or global scale. In this study, we use the Goddard Chemistry Aerosol Radiation and Transport (GOCART) model to quantify contributions of long-range transport vs. local/regional pollution sources and from natural vs. anthropogenic sources to PM concentrations different regions. In particular, we estimate the hemispheric impact of anthropogenic sulfate aerosols and dust from major source areas on other regions in the world. The GOCART model results are compared with satellite remote sensing and ground-based network measurements of aerosol optical depth and concentrations.
Document ID
20070010449
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Chin, Mian
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Diehl, Thomas
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ginoux, Paul
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2006
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: Joint CACGP/IGAC/WMO Symposium: Atmospheric Chemistry at the Interfaces 2006
Location: Cape Town
Country: South Africa
Start Date: September 9, 2006
End Date: September 24, 2006
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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