Short water residence times on the global continental shelves support an efficient cross-shelf transfer of organic matter: Was the pre-industrial coastal ocean already a global CO2 sink?

Fabrice Lacroix, Hamburg, Germany, Tatiana Ilyina, Max Planck Institute for Meteorology, Hamburg, Germany, Pierre A. G. Regnier, Université Libre de Bruxelles, Brussels, Belgium and Goulven Gildas Laruelle, Université Libre de Bruxelles, Brussel, Belgium