Dissolved aluminium in the Southern Ocean

Middag, Rob; Slooten, Cees van; Baar, de Henricus; Laan, Patrick

doi:10.1016/j.dsr2.2011.03.001

Cited by 71 publications

(54 citation statements)

References 48 publications

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“…The particulate REE data of Garcia-Solsona et al (2014) indicate that the authigenic fraction (based on 232 Th concentration estimates of the lithogenic fraction) generally dominates the REE abundance in the particles from the region. There is evidence for some minor dust input to the region from Al data but a spike at 55ºS (Middag et al, 2011b) did not overlap with our sampling stations and little evidence was found in surrounding samples (Stichel et al, 2012b).…”

Section: Accepted M Manuscriptmentioning

confidence: 92%

Rare earth element distribution in the Atlantic sector of the Southern Ocean: The balance between particle scavenging and vertical supply

et al. 2015

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The concentrations of rare earth elements (REEs) in seawater display systematic variations related to weathering inputs, particle scavenging and water mass histories.Here we investigate the REE concentrations of water column profiles in the Atlantic sector of the Southern Ocean, a key region of the global circulation and primary production. The data reveal a pronounced contrast between the vertical profiles in the

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Section: Accepted M Manuscriptmentioning

confidence: 92%

Rare earth element distribution in the Atlantic sector of the Southern Ocean: The balance between particle scavenging and vertical supply

et al. 2015

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“…Data on the distributions of the macronutrient elements N, P, Si [44,[62][63][64][65][66][67], the micronutrient elements Fe, Mn, Ni, Zn and Cd [64,[68][69][70][71][72][73][74][75][76][77][78][79][80][81][82][83][84] and the non-nutrient element Al [67,85,86] were downloaded from the IDP2014 collection [20] and imported into a Matlab™ environment for analysis. For each sampling location and/or seawater volume/water mass, a ranking of the relative deficiencies of multiple nutrient elements was calculated by dividing observed dissolved concentrations by an assumed 'typical' stoichiometric ratio within newly formed organic (biological) material (figure 1) [11,18].…”

Section: Methodsmentioning

confidence: 99%

Diagnosing oceanic nutrient deficiency

Moore¹

2016

Phil. Trans. R. Soc. A.

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“…In the eastern North Atlantic dAl concentrations in surface waters range between 1-5 nM (Measures et al, 2008) and in contrast to the western North Atlantic, a dAl mid depth maximum (>30 nM) is observed associated with Mediterranean Overflow Waters (MOW) (Measures et al, 2015;Rolison et al, 2015). Globally, the highest dAl 10 concentrations have been measured in the Mediterranean Sea (up to 174 nM) (Chou and Wollast, 1997;Rolison et al, 2015) and the subtropical North Atlantic (up to 60 nM) (Schlosser et al, 2014), while the lowest concentrations (< 1nM) were found in the Southern Ocean (Middag et al, 2011), Pacific Ocean (Orians and Bruland, 1986) and high latitude North Atlantic (Middag et al, 2015b).…”

Section: Introductionmentioning

confidence: 99%

Aluminium in the North Atlantic Ocean and the Labrador Sea (GEOTRACES GA01 section): roles of continental inputs and biogenic particle removal

Barraqueta¹,

Schlösser²,

Planquette³

et al. 2018

Preprint

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The distribution of dissolved aluminium (dAl) in the water column of the North Atlantic and Labrador Sea was studied along GEOTRACES section GA01 to unravel the sources and sinks of this element. Surface water dAl concentrations were low (median of 2.5 nM) due to low aerosol deposition and removal by phytoplankton. However, surface water dAl concentrations were enhanced on the Iberian and Greenland shelves (up to 30.9 nM) due to continental inputs (rivers, glacial flour and ice melt). A 20 negative correlation was observed between dAl in surface waters and primary production, phytoplankton community structure and biogenic opal production. The abundance of diatoms exerted a significant (p<0.01) control on the surface particulate Al (pAl) to dAl ratios by decreasing dAl levels and increasing pAl levels. Dissolved Al concentrations generally increased with depth and correlated strongly with silicate (R 2 >0.76) west of the Iberian Basin, suggesting net release of dAl at depth during remineralization of sinking biogenic opal containing particles. Enrichment of dAl at near-bottom depths was 25 observed due to resuspension of sediments near the sediment-water interface. The highest dAl (up to 38.7 nM) concentrations were observed in Mediterranean Overflow Waters which act as a major source of dAl to mid depth waters of the eastern North Atlantic. This study clearly shows that the vertical and lateral distribution of dAl in the North Atlantic differs when compared to other regions of the North Atlantic and global ocean due to the large spatial differences both in the main source of Al, atmospheric deposition, and the main sink for Al, particle scavenging, between different oceanic regions. 30Biogeosciences Discuss., https://doi

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Dissolved aluminium in the Southern Ocean

Cited by 71 publications

References 48 publications

Rare earth element distribution in the Atlantic sector of the Southern Ocean: The balance between particle scavenging and vertical supply

Rare earth element distribution in the Atlantic sector of the Southern Ocean: The balance between particle scavenging and vertical supply

Diagnosing oceanic nutrient deficiency

Aluminium in the North Atlantic Ocean and the Labrador Sea (GEOTRACES GA01 section): roles of continental inputs and biogenic particle removal

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