Hydrogen peroxide measurements in the marine atmosphere |
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Authors: | P Jacob D Klockow |
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Institution: | (1) Institute of Spectrochemistry and Applied Spectroscopy (ISAS), Postbox 101352, D-4600 Dortmund, Germany |
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Abstract: | Hydrogen peroxide, one of the key compounds in multiphase atmospheric chemistry, was measured on an Atlantic cruise (ANT VII/1) of the German research vessel Polarstern from 15 September to 9 October 1988, in rain and ambient air by a chemiluminescence technique. For gas phase H2O2 cryogenic sampling was employed. The presented results show an increase of gas-phase mixing ratios of about 45 pptv per degree latitude between 50° N and 0°, and a maximum of 3.5 ppbv around the equator. Generally higher mixing ratios were observed in the Southern Hemisphere, with a clear diurnal variation. The H2O2 mixing ratio is correlated to the UV radiation intensity and to the temperature difference between air and ocean surface water. |
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Keywords: | Hydrogen peroxide ambient air marine atmosphere |
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