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Measurements of NO(x) and NO(y) concentrations and fluxes over Arctic tundraMeasurements of the atmospheric concentrations of NO, NO2, total NO(y), and O3 were made during the NASA Arctic Boundary Layer Expedition (ABLE 3A) at a remote location in a tundra bog ecosystem in southeastern Alaska during the growing season (July-August 1988). Concentrations of NO(x) and NO(y) were found to be very low compared to other remote continental sites, indicating that anthropogenic influences were small at this site during this time of year. The NO(y) emission rate from the soil were 0.13 +/- 0.05 x 10 exp 9 molecules/sq cm/s. Direct measurements of the flux of total NO(y) were made for the first time, indicating downward flux of NO(y) at all times of day, with maximum deposition of 2.5 +/- 0.9 x 10 exp 9 molecules/sq cm/s in the afternoon. Deposition of HNO3 appears to dominate the atmosphere/surface exchange of NO(y). The mean dry deposition rate of NO(y) to the tundra was 1.8 +/- 1.0 x 10 exp 9 molecules/sq cm/s.
Document ID
19930032539
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Bakwin, Peter S.
(NASA Langley Research Center Hampton, VA, United States)
Wofsy, Steven C.
(NASA Langley Research Center Hampton, VA, United States)
Fan, Song-Miao
(Harvard Univ. Cambridge, MA, United States)
Fitzjarrald, David R.
(New York State Univ. Albany, United States)
Date Acquired
August 15, 2013
Publication Date
October 30, 1992
Publication Information
Publication: Journal of Geophysical Research
Volume: 97
Issue: D15
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
93A16536
Funding Number(s)
CONTRACT_GRANT: NAG1-55
Distribution Limits
Public
Copyright
Other

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