Convenors:
Fei Chai (University of Maine, U.S.A.)
Fangli Qiao (First Institute of Oceanography, SOA, PR China)

Plenary Speaker:
Paulo H.R. Calil (Institute of Oceanography,
          University Federal de Rio Grande, Brazil)

Invited Speaker:
Alexander Babanin (Swinburne University of Technology, Australia)

Both horizontal and vertical advection and mixing are among the most fundamental physical processes for ocean biogeochemistry and marine ecosystems. Well-defined currents, upwelling, meso- and submeso-scale eddies and mixing control the transport and budget of a wide range of physical, biogeochemical, and biological properties (e.g., heat, nutrients, oxygen, dissolved carbon, plankton, fish eggs, and larvae). However, these transports and budgets are often not well understood, even under current climate conditions. Global climate change influences ocean biogeochemistry and marine ecosystems through changes in currents, eddy characteristics, mixing and associated wind-driven and thermohaline circulation. In particular, enhanced surface stratification is expected to produce weaker mixing between the surface layer and depth leading to reduction of primary production, and weakened ventilation can accelerate ocean deoxygenation and acidification at depth. This session welcomes studies that investigate advection, eddies and mixing in the physical fields and their implications for biogeochemistry and marine ecosystems under current and future climate conditions.