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| griddap | Subset | tabledap | Make A Graph | wms | files | Accessible | Title | Summary | FGDC | ISO 19115 | Info | Background Info | RSS | Institution | Dataset ID | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| log in | [EXPORTS NA nuts and TM field data] - Dissolved trace metal and macronutrient concentrations rom field samples collected during the EXPORTS North Atlantic campaign at the Porcupine Abyssal Plain-Sustained Observatory (PAP-SO) site on board the RRS Discovery (DY131) in May 2021 (Collaborative Research: Diatoms, Food Webs and Carbon Export - Leveraging NASA EXPORTS to Test the Role of Diatom Physiology in the Biological Carbon Pump) | This dataset includes dissolved trace metal (manganese, iron, cobalt, nickel, copper, cadmium, zinc, lead) and macronutrient (nitrate+nitrite, phosphate, silicic acid, nitrite) concentration data from field samples collected during the EXPORTS North Atlantic campaign at the Porcupine Abyssal Plain-Sustained Observatory (PAP-SO) site on board the RRS Discovery (DY131). These data were primarily collected opportunistically during the course of water collection for incubation experiments (see separate dataset for incubations), and provide field context for the shipboard incubation experiments as well as temporal characterization of a retentive anticyclonic eddy occupied over the course of the cruise.\n\nThis research focuses on the vertical export of the carbon associated with a major group of phytoplankton, the diatoms in the North Atlantic near the Porcupine Abyssal Plain. The major objective is to understand how diatom community composition and the prevailing nutrient conditions create taxonomic differences in metabolic state that combine to direct diatom taxa to different carbon export pathways. The focus is on diatoms, given their large contribution to global marine primary productivity and carbon export which translates into a significant contribution to the biogeochemical cycling of carbon (C), nitrogen (N), phosphorus (P), iron (Fe) and silicon (Si). It is hypothesized that the type and degree of diatom physiological stress are vital aspects of ecosystem state that drive export. To test this hypothesis, combined investigator expertise in phytoplankton physiology, genomics, and trace element chemistry is used to assess the rates of nutrient use and the genetic composition and response of diatom communities, with measurements of silicon and iron stress to evaluate stress as a predictor of the path of diatom carbon export. The EXPORTS field campaign in the North Atlantic sampled a retentive eddy over nearly a month in May 2021, which coincided with the decline of the North Atlantic Spring Bloom.\n\ncdm_data_type = Other\nVARIABLES:\nCRUISE_ID (unitless)\nEVTNBR (unitless)\nDATE_UTC (unitless)\nTIME_UTC (unitless)\ntime (Iso_datetime_utc, seconds since 1970-01-01T00:00:00Z)\n... (90 more variables)\n | BCO-DMO | bcodmo_dataset_954941_v1 | ||||||||||||
| https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_792817 | https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_792817.graph | https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_792817/ | public | [Lagrangian Trace Metal Concentrations] - Surface and profile concentrations of trace metals and radionuclides near Station ALOHA (Center for Microbial Oceanography: Research and Education) | Trace element water samples from KM1513 were collected with the MIT Automated Trace Element (ATE) sampler, deployed with a teflon-coated wire from the ship\\u2019s deck for surface water samples (collected at roughly 10 m depth), and with the ATEs attached to PVC \\u201cVanes\\u201d designed to prevent contamination from the ship\\u2019s steel wire for samples collected at greater depth. Samples were filtered at 0.4 \\u03bcm immediately after collection through polycarbonate track etched filters (Nucleopore) into 250 mL HDPE bottles and acidified to 0.012 M hydrochloric acid (ultrapure by quadruple distillation in a Vycor still; ~pH 2) at sea. Sampling and filtration followed published protocols used previously at Station ALOHA, for direct comparison (Fitzsimmons et al., 2015). These casts mostly aligned with Niskin cast station locations, but in some cases did not.\n\ncdm_data_type = Other\nVARIABLES:\nCruise (unitless)\nSample_Time (unitless)\ndepth (m)\nUnit_Cast_Niskin (unitless)\nlatitude (degrees_north)\nlongitude (degrees_east)\nMn_D_CONC (nanomole per kilogram (nmole/kg))\nMn_D_CONC_ERROR (nanomole per kilogram (nmole/kg))\nFe_D_CONC (nanomole per kilogram (nmole/kg))\nFe_D_CONC_ERROR (nanomole per kilogram (nmole/kg))\nCo_L_CONC (picomole per kilogram (pmole/kg))\nCo_L_CONC_ERROR (picomole per kilogram (pmole/kg))\nNi_D_CONC (nanomole per kilogram (nmole/kg))\nNi_D_CONC_ERROR (nanomole per kilogram (nmole/kg))\nCu_D_CONC (nanomole per kilogram (nmole/kg))\nCu_D_CONC_ERROR (nanomole per kilogram (nmole/kg))\nZn_D_CONC (nanomole per kilogram (nmole/kg))\nZn_D_CONC_ERROR (nanomole per kilogram (nmole/kg))\n... (15 more variables)\n | https://erddap.bco-dmo.org/erddap/metadata/fgdc/xml/bcodmo_dataset_792817_fgdc.xml | https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_792817/index.htmlTable | https://www.bco-dmo.org/dataset/792817
| https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_792817.rss | https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_792817&showErrors=false&email= | BCO-DMO | bcodmo_dataset_792817 |