Articles | Volume 18, issue 1
https://doi.org/10.5194/bg-18-303-2021
https://doi.org/10.5194/bg-18-303-2021
Research article
 | 
15 Jan 2021
Research article |  | 15 Jan 2021

A Lagrangian study of the contribution of the Canary coastal upwelling to the nitrogen budget of the open North Atlantic

Derara Hailegeorgis, Zouhair Lachkar, Christoph Rieper, and Nicolas Gruber

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Cited articles

Alonso‐González, I. J., Arístegui, J., Vilas, J. C., and Hernández‐Guerra, A.: Lateral POC transport and consumption in surface and deep waters of the Canary Current region: A box model study, Global Biogeochem. Cy., 23, , GB2007, https://doi.org/10.1029/2008GB003185, 2009. a
Àlvarez-Salgado, X. A., Arístegui, J., Barton, E. D., and Hansell, D. A.: Contribution of upwelling filaments to offshore carbon export in the subtropical Northeast Atlantic Ocean, Limnol. Oceanogr., 52, 1287–1292, https://doi.org/10.4319/lo.2007.52.3.1287, 2007. a
Arístegui, J., Sangrà, P., Hernández-León, S., Cantón, M., Hernández-Guerra, A., and Kerling, J. L.: Island-induced eddies in the Canary Islands, Deep-Sea Res., 49, 1087–1101, 1994. a
Arístegui, J., Tett, P., Hernández-Guerra, A., Basterretxea, G., Montero, M. F., Wild, K., Sangrá, P., Hernández-León, S., Canton, M., García-Braun, J. A., and Pacheco, M.: The influence of island-generated eddies on chlorophyll distribution: a study of mesoscale variation around Gran Canaria, Deep Sea Res. Pt. I, 44, 71–96, 1997. 
Arístegui, J., Barton, E. D., Álvarez-Salgado, X. A., Santos, A. M. P., Figueiras, F. G., Kifani, S., Hernández-León, S., Mason, E., Machú, E., and Demarcq, H.: Sub-regional ecosystem variability in the Canary Current upwelling, Prog. Oceanogr., 83, 33–48, 2009. a, b
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Using a Lagrangian modeling approach, this study provides a quantitative analysis of water and nitrogen offshore transport in the Canary Current System. We investigate the timescales, reach and structure of offshore transport and demonstrate that the Canary upwelling is a key source of nutrients to the open North Atlantic Ocean. Our findings stress the need for improving the representation of the Canary system and other eastern boundary upwelling systems in global coarse-resolution models.
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