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Detailed Reference Information |
Huebert, B.J., Vanbramer, S.E., Lebel, P.J., Vay, S.A., Torres, A.L., Schiff, H.I., Hastie, D., Hubler, G., Bradshaw, J.D., Carroll, M.A., Davis, D.D., Ridley, B.A., Rodgers, M.O., Sandholm, S.T. and Dorris, S. (1990). Measurements of the nitric acid to NOx ratio in the troposphere. Journal of Geophysical Research 95: doi: 10.1029/89JD01593. issn: 0148-0227. |
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Nitric acid concentrations, measured by both teflon/nylon filter packs (FP) and the tungstic oxide denuder (DEN), are compared with the average NOx concentrations from laser-induced fluorescent and chemiluminescent methods. The HNO3/NOx ratio based on filter packs ranged from 0.8 to 10.4, with a mean of 3.4. The DEN nitric acid concentrations produced ratios ranging from <0.3 to 9.8, with a mean of 2.6. Average marine ratios were larger than those from continental regions, in part due to continental anthropogenic sources of NOx. Although we colleced very few boundary layer samples, their average ratios were smaller than those in the free troposphere, apparently because of the effect of dry surface removal of nitric acid. The nitric acid to NOx ratio was greatest when the NOx/NOy ratio was smallest, such that the nitrogen photochemistry was nearing completion. ¿ American Geophyscial Union 1990 |
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BACKGROUND DATA FILES |
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Abstract |
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Keywords
Atmospheric Composition and Structure, Troposphere—composition and chemistry |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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