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Inorganic nitrogen over the western North Atlantic Ocean
Author(s) -
Hastie D. R.,
Malle S.,
Toom D. L.,
Whelpdale D. M.,
Keene W. C.,
Galloway J. N.,
Maben J.,
Pszenny A. A. P.
Publication year - 1990
Publication title -
global biogeochemical cycles
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.512
H-Index - 187
eISSN - 1944-9224
pISSN - 0886-6236
DOI - 10.1029/gb004i003p00267
Subject(s) - nitrogen , particulates , aerosol , environmental chemistry , oceanography , pacific ocean , sea salt , environmental science , altitude (triangle) , reactive nitrogen , seawater , chemistry , geology , geometry , mathematics , organic chemistry
The concentrations of the reactive nitrogen species NO 2 , NO x (= NO + NO 2 ), NO y (the sum of all compounds of nitrogen and oxygen with the exception of N 2 O), particulate NO 3 − , and volatile NO 3 − were measured from ship and aircraft platforms over the western North Atlantic Ocean as part of the GCE/CASE/WATOX experiment. Air masses sampled were divided into continentally influenced and typical marine on the basis of trajectories, and radon and black carbon measurements. From the NO 3 − measurements on size separated aerosol and the altitude variations of volatile NO 3 − and particulate NO 3 − , a significant interaction between volatile NO 3 − and sea salt aerosol was indicated. The average marine concentrations measured were: 18 nmol m −3 for NO 2 , 29 nmol m −3 for NO x , 46 nmol m −3 for NO y , and 10 nmol m −3 for total inorganic NO 3 − . The reactive nitrogen species were present at concentrations some 40 times those encountered in the remote Pacific Ocean, whereas the inorganic NO 3 − was only 3 times higher.