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Regeneration of Fe(II) during EIFeX and SOFeX
Author(s) -
Croot P. L.,
Bluhm K.,
Schlosser C.,
Streu P.,
Breitbarth E.,
Frew R.,
Van Ardelan M.
Publication year - 2008
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2008gl035063
Subject(s) - cycling , diel vertical migration , mesoscale meteorology , genetic algorithm , environmental chemistry , environmental science , regeneration (biology) , oceanography , chemistry , geology , ecology , biology , microbiology and biotechnology , archaeology , history
Investigations into Fe(II) cycling during two Southern Ocean mesoscale iron enrichment experiments, SOFeX and EIFeX, clearly show the importance of Fe(II) to iron speciation during these experiments. In both cases the added Fe(II) persisted significantly longer than its expected oxidation time indicating a significant Fe reduction process at work. During EIFeX diel studies showed a strong photochemically induced cycle in Fe(II) production in sunlit surface waters. Our results suggest that the photochemical cycling of iron may also be important in unfertilized waters of the Southern Ocean.