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Nitrogen oxides in the troposphere - Global and regional budgetsThe cycle of nitrogen oxides in the troposphere is discussed from both global and regional perspectives. Global sources for NO(x) are estimated to be of magnitude 50 (+ or - 25) x 10 to the 12th gm N/yr. Nitrogen oxides are derived from combustion of fossil fuels (40 percent) and biomass burning (25 percent) with the balance from lightning and microbial activity in soils. Estimates for the rate of removal of NOx based on recent atmospheric and precipitation chemistry data are consistent with global source strengths derived here. Industrial and agricultural activities provide approximately two thirds of the global source for NOx. In North America, sources from combustion of fossil fuels exceed natural sources by a factor of 3-13. Wet deposition removes about one third of the combustion source of NOx over North America, while dry deposition removes a similar amount. The balance is exported from the continent. Deposition of nitrate in precipitation over eastern Canada and the western Atlantic is clearly influenced by sources of NOx in the eastern United States.
Document ID
19840035002
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Logan, J. A.
(Harvard University Cambridge, MA, United States)
Date Acquired
August 12, 2013
Publication Date
December 20, 1983
Publication Information
Publication: Journal of Geophysical Research
Volume: 88
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
84A17789
Funding Number(s)
CONTRACT_GRANT: NAGW-359
CONTRACT_GRANT: NSG-2031
CONTRACT_GRANT: NSF ATM-81-17009
Distribution Limits
Public
Copyright
Other

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