The significance of the episodic nature of atmospheric deposition to Low Nutrient Low Chlorophyll regions
- Guieu, C.
- Aumont, O.
- Paytan, A.
- Bopp, L.
- Law, C.S.
- Mahowald, N.
- Achterberg, E. P.
- Marañón, E.
- Salihoglu, B.
- Crise, A.
- Wagener, Thibaut
- Herut, B.
- Desboeufs, K.
- Kanakidou, M.
- Olgun, N.
- Peters, F.
- Pulido-Villena, E.
- Tovar-Sanchez, A.
- Völker, C.
DOIAbstract
International audienceIn the vast Low Nutrient Low-Chlorophyll (LNLC) Ocean, the vertical nutrient supply from the sub-surface to the sunlit surface waters is low, and atmospheric contribution of nutrients may be one order of magnitude greater over short timescales. The short turnover time of atmospheric Fe and N supply (<1 month for nitrate) further supports deposition being an important source of nutrients in LNLC regions. Yet, the extent to which atmospheric inputs are impacting biological activity and modifying the carbon balance in oligotrophic environments has not been constrained. Here, we quantify and compare the biogeochemical impacts of atmospheric deposition in LNLC regions using both a compilation of experimental data and model ...
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