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  • Alkalinity, total; Biogeochemical Cycling; Carbon, inorganic, dissolved; Carbon, organic, dissolved; DEPTH, water; Event label; GA02_10A; GA02_10B; GA02_11A; GA02_11B; GA02_12A; GA02_12B; GA02_13A; GA02_13B; GA02_14A; GA02_14B; GA02_15A; GA02_15B; GA02_16A; GA02_16B; GA02_17A; GA02_17B; GA02_18A; GA02_18B; GA02_19; GA02_21; GA02_22; GA02_23; GA02_24; GA02_25; GA02_26; GA02_28; GA02_29; GA02_2A; GA02_2B; GA02_3; GA02_31; GA02_32; GA02_33; GA02_34; GA02_35; GA02_36; GA02_37; GA02_38; GA02_39; GA02_4; GA02_40; GA02_41; GA02_5A; GA02_5B; GA02_6A; GA02_6B; GA02_7; GA02_8A; GA02_8B; GA02_9A; GA02_9B; GA06_18; GA06_2; GA06_3; GA06_4; GA06_6; GA06_7; GA06_8; GA06_9; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; GP16_1; GP16_10; GP16_11; GP16_12; GP16_13; GP16_15; GP16_17; GP16_18; GP16_2; GP16_20; GP16_21; GP16_23; GP16_25; GP16_26; GP16_27; GP16_28; GP16_3; GP16_30; GP16_31; GP16_34; GP16_35; GP16_36; GP16_4; GP16_5; GP16_6; GP16_7; GP16_8; GP16_9; Iron; Iron Geochemistry; Measured; Modeled; Ocean acidification; ocean warming; pH; Salinity; Station label; Temperature, water; trace metals  (1)
  • Amazon; Atlantic Ocean; Binary Object; Binary Object (File Size); Binary Object (Media Type); Description; Trace Metal Elements.  (1)
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  • 1
    facet.materialart.
    Unknown
    The apparent iron solubility calculated from ambient temperature, pH and dissolved organic carbon in the Atlantic and Pacific oceans (2022)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: Iron (Fe) is an important limiting nutrient in the marine environment constraining primary production across much of the ocean due to its sparse solubility in seawater. Iron availability regulates the magnitude and dynamics of ocean primary productivity, and is dependent on Fe solubility and speciation in seawater which in turn are influenced by physico-chemical properties such as pH, temperature, dissolved organic material. In this study, the apparent iron solubility (SFe(III)app) is calculated in an oversaturated system by setting an input of dissolved Fe(III) to 10 nmol L-1, at ambient ocean pH, temperature and dissolved organic carbon concentrations. This will result in the precipitation of Fe hydroxide, as ferrihydrite assumed in our system. The SFe(III)app is defined as the sum of aqueous inorganic Fe(III) species and Fe(III) bound to DOM, formed at a free Fe (Fe3+) concentration equal to the limiting solubility of Fe hydroxide (Fe(OH)3(s)). We compared calculated apparent iron solubility to measured dissolved iron concentrations (dFe) from three GEOTRACES cruises in the Atlantic and Pacific oceans. I aim to build a comprehensive picture on Fe speciation and dFe inventory in the ambient oceanic water column, with further feedbacks on primary productivity.
    Keywords: Alkalinity, total; Biogeochemical Cycling; Carbon, inorganic, dissolved; Carbon, organic, dissolved; DEPTH, water; Event label; GA02_10A; GA02_10B; GA02_11A; GA02_11B; GA02_12A; GA02_12B; GA02_13A; GA02_13B; GA02_14A; GA02_14B; GA02_15A; GA02_15B; GA02_16A; GA02_16B; GA02_17A; GA02_17B; GA02_18A; GA02_18B; GA02_19; GA02_21; GA02_22; GA02_23; GA02_24; GA02_25; GA02_26; GA02_28; GA02_29; GA02_2A; GA02_2B; GA02_3; GA02_31; GA02_32; GA02_33; GA02_34; GA02_35; GA02_36; GA02_37; GA02_38; GA02_39; GA02_4; GA02_40; GA02_41; GA02_5A; GA02_5B; GA02_6A; GA02_6B; GA02_7; GA02_8A; GA02_8B; GA02_9A; GA02_9B; GA06_18; GA06_2; GA06_3; GA06_4; GA06_6; GA06_7; GA06_8; GA06_9; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; GP16_1; GP16_10; GP16_11; GP16_12; GP16_13; GP16_15; GP16_17; GP16_18; GP16_2; GP16_20; GP16_21; GP16_23; GP16_25; GP16_26; GP16_27; GP16_28; GP16_3; GP16_30; GP16_31; GP16_34; GP16_35; GP16_36; GP16_4; GP16_5; GP16_6; GP16_7; GP16_8; GP16_9; Iron; Iron Geochemistry; Measured; Modeled; Ocean acidification; ocean warming; pH; Salinity; Station label; Temperature, water; trace metals
    Type: Dataset
    Format: text/tab-separated-values, 12700 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
    facet.materialart.
    Unknown
    Trace metal stoichiometry of dissolved organic matter in the Amazon Estuary (2022)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Description: The main component of this data base comprises elemental concentrations associated with dissolved organic matter obtained from samples collected on Meteor cruise M147 (May 2018). The data supports the manuscript Trace metal stoichiometry of dissolved organic matter in the Amazon Estuary. Dissolved organic matter (DOM) comprises a distinct component of the Earth's hydrosphere and provides a link between the biogeochemical cycles of carbon, nutrients, and trace metals (TMs). Binding of TMs to DOM is thought to result in a TM pool with DOM-like biogeochemistry. In this manuscript, we determined elemental stoichiometries of aluminium, iron, copper, nickel, zinc, cobalt and manganese associated with a fraction of the DOM pool isolated by solid phase extraction at ambient pH (DOMSPE-amb) from the Amazon estuary. We found the rank order of TM stoichiometry within the DOMSPE-amb fraction was underpinned by the chemical periodicity of the TM. Furthermore, the biogeochemistry of the TMSPE-amb pool was related to the chemical hardness of the TM ion. Thus, the biogeochemistry of TMs bound to the DOMSPE-amb component in the Amazon estuary was determined by the chemical nature of the TM and not by that of the DOMSPE-amb.
    Keywords: Amazon; Atlantic Ocean; Binary Object; Binary Object (File Size); Binary Object (Media Type); Description; Trace Metal Elements.
    Type: Dataset
    Format: text/tab-separated-values, 23 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
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