Air-sea exchange of nitrous oxide and methane in the Arabian Sea: A simple model of the seasonal variability

Bange, Hermann W. (2004) Air-sea exchange of nitrous oxide and methane in the Arabian Sea: A simple model of the seasonal variability Indian Journal of Marine Sciences, 33 (1). pp. 77-83.

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Abstract

With a simple box model the seasonal variability of N₂O and CH₄ were simulated in surface layers in the central and western Arabian Sea. The model was able to reproduce the N₂O measurements except for times when cold water filaments occur (i.e., during the SW monsoon). Based on the comparison of model results and measurements, it is concluded that the saturation of N₂O in the surface layer of the Arabian Sea is mainly controlled by (i) the wind-driven air-sea exchange during the SW monsoon, (ii) entrainment of N₂O from the subsurface layer, and (iii) sea surface temperature variability. However, the contribution of the factors listed above to the seasonality of the N₂O saturations is different in the selected areas. The overall good agreement of model results and the majority of N₂O measurements suggest that N₂O formation in the surface layer of the Arabian Sea is negligible. The comparison of model’s results and CH₄ measurements revealed a more complex situation, partly due to considerable inconsistencies in the available CH₄ data. Thus, the situation for CH₄ remains unresolved and inconclusive.

Document Type: Article
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-CH Chemical Oceanography
Refereed: No
ISSN: 03795136
Date Deposited: 17 Mar 2010 12:33
Last Modified: 24 Jan 2017 12:36
URI: http://eprints.uni-kiel.de/id/eprint/1154

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