Surface NO and NO2 mixing ratios measured between 30° N and 30° S in the Atlantic region |
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| Authors: | F Rohrer D Brüning |
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| Institution: | (1) Institut für Atmosphärische Chemic, Forschungszentrum Jülich GmbH, Postfach 1913, D. 5170 Jülich, Germany |
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| Abstract: | Surface NO and NO2 mixing ratios were measured aboard the research vessel Polarstern during the mission ANT VII/1 from 24 September to 5 October 1988. The measurements were taken along the meridian at 30° W in the Atlantic region covering latitudes between 30° N and 30° S. The average mixing ratios were about 12 pptv NO/30 pptv NO2 in the Northern Hemisphere and about 7 pptv NO/22 pptv NO2 in the Southern. Elevated mixing ratios of 20 pptv NO/70 pptv NO2 were found at 12° N (probably due to air masses originating from the surface of West Africa) and in the region of the ITCZ between 8° N and 5° N. Because of probable contamination by the ship, the measured mixing ratios mostly represent upper limits. |
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| Keywords: | Nitrogen oxide nitrogen dioxide maritime air Atlantic Ocean |
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