Direct Evidence for a Marine Source of C 1 and C 2 Alkyl Nitrates
- 16 August 2002
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 297 (5584) , 1151-1154
- https://doi.org/10.1126/science.1073896
Abstract
Alkyl nitrates are a significant component of the “odd nitrogen” reservoir and play an important role in regulating tropospheric ozone levels in remote marine regions. Measurements of methyl and ethyl nitrate in seawater and air samples along two Atlantic Ocean transects provide the first direct evidence for an oceanic source of these compounds. Equatorial surface waters were highly supersaturated (up to 800%) in both species, with the waters in the temperate regions generally being closer to equilibrium. A simple box model calculation suggests that the equatorial source could be a major component of the local atmospheric alkyl nitrate budget.Keywords
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