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Impact of Ship Emissions on Marine Boundary Layer NO(x) and SO2 Distributions over the Pacific BasinThe impact of ship emissions on marine boundary layer (MBL) NO(x) and SO2 levels over the Pacific Ocean has been explored by comparing predictions (with and without ships) from a global chemical transport model (GCTM) against compiled airborne observations of MBL NO(x) and SO2. For latitudes above 15 N, which define that part of the Pacific having the heaviest shipping, this analysis revealed significant model over prediction for NOx and a modest under prediction for SO2 when ship emissions were considered. Possible reasons for the difference in NO(x) and SO2 were explored using a full-chemistry box model. These results revealed that for an actual plume setting the NO(x) lifetime could be greatly shortened by chemical processes promoted by ship plume emissions themselves. Similar chemical behavior was not found for SO2.
Document ID
20010058926
Acquisition Source
Langley Research Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Davis, D. D.
(Georgia Inst. of Tech. Atlanta, GA United States)
Grodzinsky, G.
(Georgia Inst. of Tech. Atlanta, GA United States)
Kasibhatla, P.
(Duke Univ. Durham, NC United States)
Crawford, J.
(NASA Langley Research Center Hampton, VA United States)
Chen, G.
(Georgia Inst. of Tech. Atlanta, GA United States)
Liu, S.
(Georgia Inst. of Tech. Atlanta, GA United States)
Bandy, A.
(Drexel Univ. Philadelphia, PA United States)
Thornton, D.
(Drexel Univ. Philadelphia, PA United States)
Guan, H.
(Georgia Inst. of Tech. Atlanta, GA United States)
Sandholm, S.
(Georgia Inst. of Tech. Atlanta, GA United States)
Date Acquired
August 20, 2013
Publication Date
January 15, 2001
Publication Information
Publication: Geophysical Research Letters
Publisher: American Geophysical Union
Volume: 28
Issue: 2
ISSN: 0094-8276
Subject Category
Environment Pollution
Report/Patent Number
Paper-2000GL012013
Funding Number(s)
CONTRACT_GRANT: NCC1-306
Distribution Limits
Public
Copyright
Other

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