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A 3-D Model Analysis of The Impact of Asian Anthropogenic Emissions on the Sulfur Cycle Over the Pacific OceanThe impact of anthropogenic activities on the SO2 and sulfate aerosol levels over the Pacific region is examined in the Georgia Tech/Goddard Global Ozone Chemistry Aerosol Radiation and Transport (GOCART) model. We focus on the analysis of the data from the NASA Pacific Exploratory Missions (PEM) over the western North Pacific and the tropical Pacific. These missions include PEM-West A in September-October 1991, when the Asian outflow was at the minimum but the upper atmosphere was heavily influenced by the Pinatubo volcanic eruption, and PEM-West B in March-April 1994 when the Asian outflow was at the maximum, and PEM-Tropics A in August-September at a region relatively free of direct anthropogenic influences. Specifically, we will examine the relative importance of anthropogenic, volcanic and biogenic sources to the SO2 and sulfate concentrations over the Pacific, and quantify the processes controlling the distributions of SO2 and sulfate in both the boundary layer and the free troposphere. We will also assess the global impact of SO2 emission in Asia on the sulfate aerosol loading.
Document ID
20000085544
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Chin, Mian
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Thornton, Donald
(Drexel Univ. Philadelphia, PA United States)
Bandy, Alan
(Drexel Univ. Philadelphia, PA United States)
Huebert, Barry
(Hawaii Univ. HI United States)
Einaudi, Franco
Date Acquired
August 19, 2013
Publication Date
January 1, 2000
Subject Category
Environment Pollution
Meeting Information
Meeting: Western Pacific Geophysics
Location: Tokyo
Country: Japan
Start Date: June 27, 2000
End Date: June 30, 2000
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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