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  • Data  (5)
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  • 1
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    Stable nitrate, nitrite and oxygen isotopes in seawater and particulate samples during METEOR cruise M93 (2021)
    PANGAEA
    Details
    Publication Date: 2023-10-28
    Description: Seawater samples for dual isotopes measurements of nitrate (δ15N_NO3 and δ18_NO3) and nitrite (δ15_NO2) were taken from the CTD-rosette. The isotopic composition was measured using the denitrifier method (Casciotti et al., 2002; Sigman et al., 2001).
    Keywords: Ammonium; Climate - Biogeochemistry Interactions in the Tropical Ocean; CTD/Rosette; CTD008; CTD013; CTD036; CTD045; CTD049; CTD053; CTD065; CTD069; CTD071; CTD076; CTD077; CTD080; CTD081; CTD082; CTD083; CTD120; CTD122; CTD130; CTD134; CTD138; CTD142; CTD143; CTD151; CTD157; CTD-RO; Date/Time of event; DEPTH, water; Event label; LATITUDE; LONGITUDE; M93; M93_295-2; M93_298-1; M93_303-2; M93_318-3; M93_324-1; M93_334-1; M93_338-1; M93_342-1; M93_354-1; M93_359-2; M93_361-2; M93_367-1; M93_368-1; M93_369-4; M93_376-2; M93_378-2; M93_380-3; M93_399-4; M93_411-6; M93_420-1; M93_422-1; M93_430-1; M93_436-1; M93_441-4; M93_448-5; M93_456-1; M93_463-1; M93_468-1; Meteor (1986); Nitrate; Nitrite; Nitrogen oxide; Number; Oxygen; Oxygen, dissolved; PCTD-RO; Phosphate; Profile; PumpCTD/Rosette; Sample code/label; SFB754; Silicate; South Pacific Ocean; Standard deviation; Station label; Temperature, water; δ13C, particulate organic carbon; δ15N; δ15N, nitrate; δ15N, nitrite; δ15N, particulate organic nitrogen; δ15N, standard deviation; δ18O; δ18O, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 3779 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 2
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    Hydroxylamine as a potential indicator of nitrification in the open ocean (2019)
    PANGAEA
    In:  Supplement to: Korth, Frederike; Kock, Annette; Arévalo-Martínez, Damian L; Bange, Hermann Werner (2019): Hydroxylamine as a Potential Indicator of Nitrification in the Open Ocean. Geophysical Research Letters, 46(4), 2158-2166, https://doi.org/10.1029/2018GL080466
    Details
    Publication Date: 2024-02-01
    Description: Hydroxylamine (NH 2 OH), a short-lived intermediate in the nitrogen cycle, is a potential precursor of nitrous oxide (N 2 O) in the ocean. However, measurements of NH 2 OH in the ocean are sparse. Here we present a data set of depth profiles of NH 2 OH from the equatorial Atlantic Ocean and the eastern tropical South Pacific and compare it to N 2 O, nitrate, and nitrite profiles under varying oxygen conditions. The presence of NH 2 OH in surface waters points toward surface nitrification in the upper 100 m. Overall, we found a ratio of 1:3 between NH 2 OH and N 2 O in open ocean areas when oxygen concentrations were 〉50 μmol/L. In the equatorial Atlantic Ocean and the open ocean eastern tropical South Pacific, where nitrification is the dominant N 2 O production pathway, stepwise multiple regressions demonstrated that N 2 O, NH 2 OH, and nitrate concentrations were highly correlated, suggesting that NH 2 OH is a potential indicator for nitrification.
    Keywords: Climate - Biogeochemistry Interactions in the Tropical Ocean; SFB754; SOPRAN; Surface Ocean Processes in the Anthropocene; water column
    Type: Dataset
    Format: application/zip, 3 datasets
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    DATA PANGAEA
  • 3
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    Hydroxylamine (NH2OH) in the water column during Maria S. Merian cruise MSM18/2 (2019)
    PANGAEA
    Details
    Publication Date: 2024-02-02
    Description: Concentration of Hydroxylamine in the water column during Maria S. Merian Cruise MSM18/2. Hydroxylamine was measured as N2O after chemical conversion to N2O by addition of Fe(III). N2O concentrations from hydroxylamine conversion (after subtraction of background N2O) is provided as separate column. The conversion efficiency (recovery factor) was determined for each station by standard addition at one sampling depth. Corresponding background N2O concentrations are available at: https://doi.org/10.1594/PANGAEA.900984.
    Keywords: Climate - Biogeochemistry Interactions in the Tropical Ocean; CTD_38; CTD_51; CTD_56; CTD_66; CTD/Rosette; CTD-RO; DATE/TIME; DEPTH, water; Event label; Hydroxylamine; LATITUDE; LONGITUDE; Maria S. Merian; MSM18/2; MSM18/2_653-1; MSM18/2_662-5; MSM18/2_668-1; MSM18/2_679-1; Nitrous oxide, dissolved; Recovery; Sample code/label; Sample ID; SFB754; SOPRAN; Standard deviation; Surface Ocean Processes in the Anthropocene
    Type: Dataset
    Format: text/tab-separated-values, 192 data points
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    DATA PANGAEA
  • 4
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    Hydroxylamine (NH2OH) in the water column during METEOR cruise M90 (2019)
    PANGAEA
    Details
    Publication Date: 2024-02-01
    Description: Concentration of Hydroxylamine in the water column during Meteor cruise M90. Hydroxylamine was measured as N2O after chemical conversion to N2O by addition of Fe(III). N2O concentrations from hydroxylamine conversion (after subtraction of background N2O) is provided as separate column. The conversion efficiency (recovery factor) was determined for each station by standard addition at one sampling depth. Corresponding background N2O concentrations are available at: https://doi.org/10.1594/PANGAEA.857760.
    Keywords: Climate - Biogeochemistry Interactions in the Tropical Ocean; CTD/Rosette; CTD 102; CTD 36; CTD 61; CTD 72; CTD-RO; DATE/TIME; DEPTH, water; Event label; Hydroxylamine; LATITUDE; LONGITUDE; M90; M90_1582-1; M90_1604-1; M90_1612-2; M90_1639-2; Meteor (1986); Nitrous oxide, dissolved; Recovery; Sample code/label; SFB754; SOPRAN; Standard deviation; Surface Ocean Processes in the Anthropocene; water column
    Type: Dataset
    Format: text/tab-separated-values, 130 data points
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    DATA PANGAEA
  • 5
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    Hydroxylamine (NH2OH) in the water column during METEOR cruise M91 (2019)
    PANGAEA
    Details
    Publication Date: 2024-02-01
    Description: Concentration of Hydroxylamine in the water column during Meteor cruise M91. Hydroxylamine was measured as N2O after chemical conversion to N2O by addition of Fe(III). N2O concentrations from hydroxylamine conversion (after subtraction of background N2O) is provided as separate column. The conversion efficiency (recovery factor) was determined for each station by standard addition at one sampling depth. Corresponding background N2O concentrations are available at: https://doi.org/10.1594/PANGAEA.858178.
    Keywords: Climate - Biogeochemistry Interactions in the Tropical Ocean; CTD/Rosette; CTD-018; CTD-019; CTD-021; CTD-022; CTD-RO; DATE/TIME; DEPTH, water; Event label; Hydroxylamine; LATITUDE; LONGITUDE; M91; M91_1725-1; M91_1725-3; M91_1727-1; M91_1727-3; Meteor (1986); Nitrous oxide, dissolved; Recovery; Sample code/label; SFB754; SOPRAN; South Pacific Ocean; Standard deviation; Surface Ocean Processes in the Anthropocene
    Type: Dataset
    Format: text/tab-separated-values, 90 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
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