Detalls de la publicació.

Article

Any:2016
Autor(s):J. Solé, J. Ballabrera-Poy, D. Macías, I. Catalán
Títol:The role of ocean velocity in chlorophyll variability. A modelling study in the Alboran Sea El papel de la velocidad oceánica en la variabilidad de la clorofila. Un estudio de modelado en el mar de Alborán
Revista:SCIENTIA MARINA
ISSN:0214-8358
JCR Impact Factor:1.009
Volum:80
Pàgines:249-256
D.O.I.:10.3989/scimar.04290.04A
Web:https://dx.doi.org/10.3989/scimar.04290.04A
Resum:© 2016 CSIC. In this work we focus on the Alboran Sea (western Mediterranean) to relate wind field and ocean velocity variability with chlorophyll a (Chl a) behaviour, using a 2-km resolution, coupled 3D ocean circulation-NPZD model (ROMS). The analysis is done in three steps. First, we split the seasonal and residual contribution for the fields under study. Second, we calculate the corresponding empirical orthogonal functions (EOFs) for the seasonal and residual parts. Finally, we relate each pair of variables for both seasonal and residual contribution EOFs. The results reported here allow the links between wind and Chl a to be quantified. We explain these links in terms of the ocean velocity field acting as a driver of Chl a variability. The results show that, although the seasonal part of the Chl a field is modulated by the vertical velocity, the residual component is modulated by the horizontal velocity components. Vertical velocities are responsible, through coastal upwelling, for Chl a bloom enhancement, while horizontal velocities spread coastal Chl a surface blooms off-shore.

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