ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Collection
Keywords
Publisher
Years
  • 1
    facet.materialart.
    Unknown
    PANGAEA
    In:  Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory
    Publication Date: 2023-06-10
    Keywords: 323O19940105-track; CT; DATE/TIME; Depth, bathymetric, interpolated/gridded; DEPTH, water; extracted from the 2-Minute Gridded Global Relief Data (ETOPO2); extracted from the NCEP/NCAR 40-Year Reanalysis Project; extracted from the World Ocean Atlas 2005; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); LATITUDE; LONGITUDE; Maurice Ewing; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pressure, atmospheric, interpolated; Recomputed after SOCAT (Pfeil et al., 2013); Salinity, interpolated; SOCAT; Surface Ocean CO2 Atlas Project; Temperature, water; Underway cruise track measurements; WOCE_A17
    Type: Dataset
    Format: text/tab-separated-values, 4066 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    facet.materialart.
    Unknown
    PANGAEA
    In:  Supplement to: Mollier-Vogel, Elfi; Ryabenko, Evgenia; Martinez, Philippe; Wallace, Douglas WR; Altabet, Mark A; Schneider, Ralph R (2012): Nitrogen isotope gradients off Peru and Ecuador related to upwelling, productivity, nutrient uptake and oxygen deficiency. Deep Sea Research Part I: Oceanographic Research Papers, 70, 14-25, https://doi.org/10.1016/j.dsr.2012.06.003
    Publication Date: 2023-10-28
    Description: We present new nitrogen isotope data from the water column and surface sediments for paleo-proxy validation collected along the Peruvian and Ecuadorian margins between 1°N and 18°S. Productivity proxies in the bulk sediment (organic carbon, total nitrogen, biogenic opal, C37 alkenone concentrations) and 15N/14N ratios were measured at more than 80 locations within and outside the present-day Peruvian oxygen minimum zone (OMZ). Microbial N-loss to N2 in subsurface waters under O2 deficient conditions leaves a characteristic 15N-enriched signal in underlying sediments. We find that phytoplankton nutrient uptake in surface waters within the high nutrient, low chlorophyll (HNLC) regions of the Peruvian upwelling system influences the sedimentary signal as well. How the d15Nsed signal is linked to these processes is studied by comparing core-top values to the 15N/14N of nitrate and nitrite (d15N[NOx]) in the upper 200 m of the water column. Between 1°N and 10°S, subsurface O2 is still high enough to suppress N-loss keeping d15NNOx values relatively low in the subsurface waters. However d15N[NOx] values increase toward the surface due to partial nitrate utilization in the photic zone in this HNLC portion of the system. d15N[sed] is consistently lower than the isotopic signature of upwelled [NO3]-, likely due to the corresponding production of 15N depleted organic matter. Between 10°S and 15°S, the current position of perennial upwelling cells, HNLC conditions are relaxed and biological production and near-surface phytoplankton uptake of upwelled [NO3]- are most intense. In addition, subsurface O2 concentration decreases to levels sufficient for N-loss by denitrification and/or anammox, resulting in elevated subsurface d15N[NOx] values in the source waters for coastal upwelling. Increasingly higher production southward is reflected by various productivity proxies in the sediments, while the north-south gradient towards stronger surface [NO3]- utilization and subsurface N-loss is reflected in the surface sediment 15N/14N ratios. South of 10°S, d15N[sed] is lower than maximum water column d15N[NOx] values most likely because only a portion of the upwelled water originates from the depths where highest d15N[NOx] values prevail. Though the enrichment of d15N[NOx] in the subsurface waters is unambiguously reflected in d15N[sed] values, the magnitude of d15N[sed] enrichment depends on both the depth of upwelled waters and high subsurface d15N[NOx] values produce by N-loss. Overall, the degree of N-loss influencing subsurface d15N[NOx] values, the depth origin of upwelled waters, and the degree of near-surface nitrate utilization under HNLC conditions should be considered for the interpretation of paleo d15N[sed] records from the Peruvian oxygen minimum zone.
    Keywords: Climate - Biogeochemistry Interactions in the Tropical Ocean; SFB754
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Publication Date: 2023-10-28
    Keywords: Average; Climate - Biogeochemistry Interactions in the Tropical Ocean; DEPTH, sediment/rock; LATITUDE; LONGITUDE; SFB754
    Type: Dataset
    Format: text/tab-separated-values, 15 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Publication Date: 2023-10-28
    Keywords: Ammonium; Climate - Biogeochemistry Interactions in the Tropical Ocean; CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Event label; Latitude of event; Longitude of event; M77/3; M77/3-CTD14; M77/3-CTD15; M77/3-CTD18; M77/3-CTD35; M77/3-CTD53; M77/3-CTD6; M77/3-CTD7; M77/3-CTD71; M77/3-CTD78; M77/4; M77/4-CTD47; M77/4-CTD48; M77/4-CTD49; M77/4-CTD50; Meteor (1986); Nitrate; Nitrite; Nitrogen; Oxygen; Phosphate; Pressure, water; Salinity; Sample code/label; SFB754; Temperature, water; δ15N, nitrate; δ15N, nitrite; δ15N, nitrite + nitrate
    Type: Dataset
    Format: text/tab-separated-values, 2296 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    Publication Date: 2023-09-12
    Keywords: 77CO20060611; 77CO20060611-EQL-track; Atlantic Companion; Atlantic Ocean; BARO; Barometer; Calculated; CARBOOCEAN; COM-9; DATE/TIME; Day of the year; DEPTH, water; EQL; Equilibrator; Fugacity of carbon dioxide (air, 100% humidity); Fugacity of carbon dioxide (water) at sea surface temperature (wet air); interpolated; LATITUDE; LONGITUDE; Marine carbon sources and sinks assessment; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pressure, atmospheric; Pressure at equilibration; Salinity; Temperature, water; Temperature at equilibration; xCO2 (ambient atmosphere, dry air); xCO2 (water) at equilibrator temperature (dry air)
    Type: Dataset
    Format: text/tab-separated-values, 27591 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    Publication Date: 2023-09-12
    Keywords: 77CO20070124; 77CO20070124-EQL-track; Atlantic Companion; BARO; Barometer; CARBOOCEAN; DATE/TIME; Day of the year; DEPTH, water; EQL; Equilibrator; Fugacity of carbon dioxide (air, 100% humidity); Fugacity of carbon dioxide (water) at sea surface temperature (wet air); interpolated; LATITUDE; LONGITUDE; Marine carbon sources and sinks assessment; North Atlantic; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pressure, atmospheric; Pressure at equilibration; Salinity; Temperature, water; Temperature at equilibration; xCO2 (ambient atmosphere, dry air); xCO2 (water) at equilibrator temperature (dry air)
    Type: Dataset
    Format: text/tab-separated-values, 24177 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    Publication Date: 2023-09-12
    Keywords: 77CO20070211; 77CO20070211-EQL-track; Atlantic Companion; BARO; Barometer; CARBOOCEAN; DATE/TIME; Day of the year; DEPTH, water; EQL; Equilibrator; Fugacity of carbon dioxide (air, 100% humidity); Fugacity of carbon dioxide (water) at sea surface temperature (wet air); interpolated; LATITUDE; LONGITUDE; Marine carbon sources and sinks assessment; North Atlantic; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pressure, atmospheric; Pressure at equilibration; Salinity; Temperature, water; Temperature at equilibration; xCO2 (ambient atmosphere, dry air); xCO2 (water) at equilibrator temperature (dry air)
    Type: Dataset
    Format: text/tab-separated-values, 31020 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    Publication Date: 2023-09-12
    Keywords: 77CO20070319; 77CO20070319-EQL-track; Atlantic Companion; BARO; Barometer; CARBOOCEAN; DATE/TIME; Day of the year; DEPTH, water; EQL; Equilibrator; Fugacity of carbon dioxide (air, 100% humidity); Fugacity of carbon dioxide (water) at sea surface temperature (wet air); interpolated; LATITUDE; LONGITUDE; Marine carbon sources and sinks assessment; North Atlantic; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pressure, atmospheric; Pressure at equilibration; Salinity; Temperature, water; Temperature at equilibration; xCO2 (ambient atmosphere, dry air); xCO2 (water) at equilibrator temperature (dry air)
    Type: Dataset
    Format: text/tab-separated-values, 29347 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    Publication Date: 2023-09-12
    Keywords: 77CO20070404; 77CO20070404-EQL-track; Atlantic Companion; BARO; Barometer; CARBOOCEAN; DATE/TIME; Day of the year; DEPTH, water; EQL; Equilibrator; Fugacity of carbon dioxide (air, 100% humidity); Fugacity of carbon dioxide (water) at sea surface temperature (wet air); interpolated; LATITUDE; LONGITUDE; Marine carbon sources and sinks assessment; North Atlantic; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pressure, atmospheric; Pressure at equilibration; Salinity; Temperature, water; Temperature at equilibration; xCO2 (ambient atmosphere, dry air); xCO2 (water) at equilibrator temperature (dry air)
    Type: Dataset
    Format: text/tab-separated-values, 25134 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    Publication Date: 2023-09-12
    Keywords: 77CO20060625; 77CO20060625-EQL-track; Atlantic Companion; Atlantic Ocean; BARO; Barometer; Calculated; CARBOOCEAN; COM-10; DATE/TIME; Day of the year; DEPTH, water; EQL; Equilibrator; Fugacity of carbon dioxide (air, 100% humidity); Fugacity of carbon dioxide (water) at sea surface temperature (wet air); interpolated; LATITUDE; LONGITUDE; Marine carbon sources and sinks assessment; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pressure, atmospheric; Pressure at equilibration; Salinity; Temperature, water; Temperature at equilibration; xCO2 (ambient atmosphere, dry air); xCO2 (water) at equilibrator temperature (dry air)
    Type: Dataset
    Format: text/tab-separated-values, 37125 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...