Air-water CO2 fluxes were up-scaled to take
into account the latitudinal and ecosystem diversity of the coastal ocean,
based on an exhaustive literature survey. Marginal seas at high and temperate
latitudes act as sinks of CO2 from the atmosphere, in contrast to
subtropical and tropical marginal seas that act as sources of CO2 to
the atmosphere. Overall, marginal seas act as a strong sink of CO2
of about -0.45 Pg C yr-1. This sink could be almost fully
compensated by the emission of CO2 from the ensemble of near-shore
coastal ecosystems of about 0.40 Pg C yr-1.
Author: A.V. Borges, and B. Delille (alberto dot borges at ulg dot ac dot be)
Filesize: 226.45 Kb