@article{fdi:010057046,
  title = {{A} global compilation of dissolved iron measurements : focus on distributions and processes in the {S}outhern {O}cean},
  author = {{T}agliabue, {A}. and {M}tshali, {T}. and {A}umont, {O}livier and {B}owie, {A}. {R}. and {K}lunder, {M}. {B}. and {R}oychoudhury, {A}. {N}. and {S}wart, {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{D}ue to its importance as a limiting nutrient for phytoplankton growth in large regions of the world's oceans, ocean water column observations of concentration of the trace-metal iron ({F}e) have increased markedly over recent decades. {H}ere we compile >13 000 global measurements of dissolved {F}e (d{F}e) and make this available to the community. {W}e then conduct a synthesis study focussed on the {S}outhern {O}cean, where d{F}e plays a fundamental role in governing the carbon cycle, using four regions, six basins and five depth intervals as a framework. {O}ur analysis highlights depth-dependent trends in the properties of d{F}e between different regions and basins. {I}n general, surface d{F}e is highest in the {A}tlantic basin and the {A}ntarctic region. {W}hile attributing drivers to these patterns is uncertain, inter-basin patterns in surface d{F}e might be linked to differing degrees of d{F}e inputs, while variability in biological consumption between regions covaries with the associated surface d{F}e differences. {O}pposite to the surface, d{F}e concentrations at depth are typically higher in the {I}ndian basin and the {S}ubantarctic region. {T}he inter-region trends can be reconciled with similar ligand variability (although only from one cruise), and the inter-basin difference might be explained by differences in hydrothermal inputs suggested by modelling studies ({T}agliabue et al., 2010) that await observational confirmation. {W}e find that even in regions where many d{F}e measurements exist, the processes governing the seasonal evolution of d{F}e remain enigmatic, suggesting that, aside from broad {S}ubantarctic - {A}ntarctic trends, biological consumption might not be the major driver of d{F}e variability. {T}his highlights the apparent importance of other processes such as exogenous inputs, physical transport/mixing or d{F}e recycling processes. {N}evertheless, missing measurements during key seasonal transitions make it difficult to better quantify and understand surface water replenishment processes and the seasonal {F}e cycle. {F}inally, we detail the degree of seasonal coverage by region, basin and depth. {B}y synthesising prior measurements, we suggest a role for different processes and highlight key gaps in understanding, which we hope can help structure future research efforts in the {S}outhern {O}cean.},
  keywords = {},
  booktitle = {},
  journal = {{B}iogeosciences},
  volume = {9},
  numero = {6},
  pages = {2333--2349},
  ISSN = {1726-4170},
  year = {2012},
  DOI = {10.5194/bg-9-2333-2012},
  URL = {https://www.documentation.ird.fr/hor/fdi:010057046},
}