The Lagrangian progression of nitrous oxide within filaments formed in the Mauritanian upwelling
The Lagrangian progression of nitrous oxide within filaments formed in the Mauritanian upwelling
复制标题
毛里塔尼亚上升流形成的细丝内一氧化二氮的拉格朗日级数
DOI：
10.1029/2011gl049322
复制
发表时间：
2011
影响因子：
5.2
通讯作者：
R. Torres
中科院分区：
文献类型：
--
作者：
Andrew P. Rees;I. Brown;D. Clark;R. Torres
Concentrations of dissolved nitrous oxide (N2O) and N2O flux densities were determined during the Lagrangian investigation of two filaments advected from the Mauritanian upwelling. The ratio between remineralization and N2O production, predominantly through nitrification was 0.11 ± 0.01%. This was linked to the hydrodynamic character of each filament, which was determined by the relative proportions of two central water masses from which they originated. Surface waters were saturated with N2O up to 150% when first upwelled, but following advective transport offshore and exchange with the atmosphere at rates between 5 and 27 μmol m−2d−1 were closer to equilibrium with the atmosphere (105%) when the filament was approximately two weeks old. Annual estimates of N2O emissions from transient filaments in this area are between 1.3 and 2.1 Gg N, but could be as high as 9.8 Gg N y−1 for the extended upwelling area in the vicinity of Cap Blanc.
