Mesoscale in the Western Mediterranean: interaction with the large scale circulation and impact on vertical transport of biogeochemical tracers

摘要: Mesoscale is a dominant scale of motion in the world’s oceans. During last decade, wide use infrared imagery and altimetry, has shown that mesoscale structures are ubiquitous dominate energy spectrum. These present range space time scales, from 10 to 100 km days, respectively. features large variety patterns such as meanders, eddies, filaments or plumes responsible for existence enhanced density velocity shears. The observation therefore become priority recent years significant efforts now devoted resolve parametrize fluctuations ocean circulation models, both open more coastal studies. observed their dynamics however different these two environments. In study circulation, adequate treatment parametrization turbulent eddies needed since they enhance mixing horizontal transport heat, salt, particulate matter, etc., which play an important role global circulation. ocean, represent major forcing cross-shore properties. Another difference between studies that, while generally isotropic, highly anisotropic, appearing usually elongated filaments.