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|Title:||Air-sea exchange of nitrous oxide and methane in the Arabian Sea: A simple model of the seasonal variability|
|Authors:||Bange, Hermann W.|
|Keywords:||Nitrous oxide;Methane;Arabian Sea;Air-sea exchange;Box model|
|IPC Code:||Int. Cl. ⁷ C09K 3/30|
|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.|
|Appears in Collections:|| IJMS Vol.33(1) [March 2004]|
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