The Influence of Nonlinear Mesoscale Eddies on Near-Surface Oceanic Chlorophyll
作者： D. B. Chelton , P. Gaube , M. G. Schlax , J. J. Early , R. M. Samelson
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摘要: Oceanic Rossby waves have been widely invoked as a mechanism for large-scale variability of chlorophyll (CHL) observed from satellites. High-resolution satellite altimeter measurements recently revealed that sea-surface height (SSH) features previously interpreted linear are nonlinear mesoscale coherent structures (referred to here eddies). We analyze 10 years these SSH fields and concurrent upper-ocean CHL show eddies exert strong influence on the field, thus requiring reassessment covariability CHL. On time scales longer than 2 3 weeks, dominant is shown be eddy-induced horizontal advection by rotational velocities eddies.
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