Elements of spatial and temporal variability of plankton in the gulf of Cadiz: an analysis based on EOF decomposition of SeaWiFS images

Gabriel Navarro; Javier Ruiz

doi:10.1117/12.514031

26 February 2004 Elements of spatial and temporal variability of plankton in the gulf of Cadiz: an analysis based on EOF decomposition of SeaWiFS images

Gabriel Navarro, Javier Ruiz

Author Affiliations +

Proceedings Volume 5233, Remote Sensing of the Ocean and Sea Ice 2003; (2004) https://doi.org/10.1117/12.514031
Event: Remote Sensing, 2003, Barcelona, Spain

Abstract

The time-space distribution of chlorophyll concentration in the gulf of Cadiz (SW Spain) is analysed by using remotely sensed data from the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) between 1998 and 2002. Climatological and monthly averages show more productive waters at the inner shelf, especially during winter-spring and fall blooms. This pattern is further confirmed by the modes obtained with an Empirical Orthogonal Function (EOF) decomposition of weekly chlorophyll composite images for the whole period. The first mode (10%) distinguishes several regions with patterns of variability correlated with oceanographic features in the area. It identifies a coastal zone between Huelva and Cadiz which is strongly coupled to local zonal winds where west and easterlies induce an increase and decrease of the chlorophyll respectively. Chlorophyll concentration of this area is also sensitive to precipitation.

Citation Download Citation

Gabriel Navarro and Javier Ruiz "Elements of spatial and temporal variability of plankton in the gulf of Cadiz: an analysis based on EOF decomposition of SeaWiFS images", Proc. SPIE 5233, Remote Sensing of the Ocean and Sea Ice 2003, (26 February 2004); https://doi.org/10.1117/12.514031

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