FN Archimer Export Format PT J TI Sequestration efficiency in the iron-limited North Atlantic: Implications for iron supply mode to fertilized blooms BT AF LE MOIGNE, Frederic A. C. MOORE, C. Mark SANDERS, Richard J. VILLA-ALFAGEME, Maria STEIGENBERGER, Sebastian ACHTERBERG, Eric P. AS 1:1;2:2;3:1;4:3;5:2;6:2,4; FF 1:;2:;3:;4:;5:;6:; C1 Natl Oceanog Ctr, Southampton, Hants, England. Univ Southampton, Southampton, Hants, England. Univ Seville, Dept Fis Aplicada 2, Seville, Spain. Helmholtz Ctr Ocean Res Kiel, GEOMAR, Kiel, Germany. C2 NOC, UK UNIV SOUTHAMPTON, UK UNIV SEVILLE, SPAIN GEOMAR, GERMANY IF 4.196 TC 14 UR https://archimer.ifremer.fr/doc/00290/40112/39249.pdf https://archimer.ifremer.fr/doc/00290/40112/39250.docx https://archimer.ifremer.fr/doc/00290/40112/39251.docx LA English DT Article CR MD 145 / KEOPS MD 188 / KEOPS 2 VT / KEOPS 2006 VT 125 / KEOPS2_MOOR VT 86 / KEOPS BO Marion Dufresne AB Estimates of the amount of carbon sequestered in the ocean interior per unit iron (Fe) supplied, as quantified by the sequestration efficiency (C-effx), vary widely. Such variability in C-effx has frequently been attributed to estimate uncertainty rather than intrinsic variability. Here we derive new estimates of C-effx for the subpolar North Atlantic, where Fe stressed conditions have recently been demonstrated. Derived values of C-effx from across the region, including areas subject to atypical external Fe fertilization events during the year of sample collection (2010), ranged from 17 to 19 kmol C (mol Fe-1). Comparing these estimates with values from other systems, considered in the context of variable bloom durations in the different oceanographic settings, we suggest that apparent variability in C-effx may be related to the mode of Fe delivery. PY 2014 PD JUN SO Geophysical Research Letters SN 0094-8276 PU Amer Geophysical Union VL 41 IS 13 UT 000340295300028 BP 4619 EP 4627 DI 10.1002/2014GL060308 ID 40112 ER EF