INORGANIC NITROGEN OVER THE WESTERN NORTH ATLANTIC OCEAN

被引:10
作者
Hastie, D. [1 ]
Malle, S. [1 ]
Toom, D. [1 ]
Whelpdale, D. [2 ]
Keene, W. [3 ]
Galloway, J. [3 ]
Maben, J. [3 ]
Pszenny, A. [4 ]
机构
[1] York Univ, Dept Chem, N York, ON M3J 1P3, Canada
[2] Atmospher Environm Serv, N York, ON M3H 5T4, Canada
[3] Univ Virginia, Dept Environm Sci, Charlottesville, VA 22903 USA
[4] NOAA, Ocean Chem Div, Atlantic Oceanog & Meteorol Lab, Miami, FL 33149 USA
关键词
D O I
10.1029/GB004i003p00267
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The concentrations of the reactive nitrogen species NO2, NOx(= NO + NO2), NOy (the sum of all compounds of nitrogen and oxygen with the exception of N2O), particulate NO3-, and volatile NO3- 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 NO3- measurements on size separated aerosol and the altitude variations of volatile NO3- and particulate NO3-, a significant interaction between volatile NO3- and sea salt aerosol was indicated. The average marine concentrations measured were: 18 nmol m(-3) for NO2, 29 nmol m(-3) for NOx, 46 nmol m(-3) for NOy, and 10 nmol m(-3) for total r inorganic NO3-. The reactive nitrogen species were present at concentrations some 40 times those encountered in the remote Pacific Ocean, whereas the inorganic NO3- was only 3 times higher.
引用
收藏
页码:267 / 278
页数:12
相关论文
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