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BCO-DMO ERDDAP
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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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_1004881_v1 | https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_1004881_v1.graph | https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_1004881_v1/ | public | [ARTEMIS DNA Metadata] - Niskin bottle metadata and environmental measurements associated with bacterial DNA samples collected from RVIB Nathaniel B. Palmer cruise NBP 22-02 in the Amundsen Sea Embayment from January to March 2022 (NSFGEO-NERC: Collaborative Research: Accelerating Thwaites Ecosystem Impacts for the Southern Ocean (ARTEMIS)) | This dataset provides water column environmental data for a study that explored the relationships between glacial meltwater-modified ocean circulation, iron supply, and pelagic bacterial community structure in the Amundsen Sea polynya (ASP), Antarctica. Onboard the RVIB Nathaniel B. Palmer, cruise NBP 22-02, January–March 2022, we examined particle-associated (3-micrometer (µm) polycarbonate pre-filter) and free-living (0.2 µm Durapore filter) bacterial 16S rRNA in seawater from 21 stations (at depths from 2 to 1271 meters (m)) in the context of a suite of ocean observations along the \"iron conveyor belt.\" This key circulation pathway follows Circumpolar Deep Water cascading from the Antarctic Circumpolar Current, along the bottom of the fore-deepened continental shelf toward the deep ice shelf cavity, where it melts the base of the ice shelf, then buoyantly upwells via meltwater entrainment, and delivers iron-rich waters to the surface waters of the polynya. A coastal current also transports this and other meltwater-rich outflows from east to west, and may play an important role in fueling ecosystem production. We were able to sample key water masses: Antarctic Surface Water (AASW), Winter Water (WW), Circumpolar Deep Water (CDW), and modified/mixed variants. Measured environmental parameters in this dataset are CTD variables (temperature, salinity, pressure, dissolved oxygen, beam transmissivity, fluorescence), macronutrients (nitrate, nitrite, ammonium, phosphate), lab chlorophyll a, micronutrient dissolved iron, δ¹⁸O, and calculated meltwater fractions. Results from this dataset, combined with 16S rRNA amplicon data, revealed distinct bacterial communities, characterized by location within the ASP, suggesting community succession along the route.\n\ncdm_data_type = Other\nVARIABLES:\nSample_ID (unitless)\nARTEMIS_ID (unitless)\nStation (unitless)\nEvent (unitless)\nCTD (unitless)\nNISKIN (unitless)\nDate (unitless)\nVolumeFiltered_L (liters)\nFilterDiameter_mm (millimeters)\n... (31 more variables)\n | https://erddap.bco-dmo.org/erddap/metadata/fgdc/xml/bcodmo_dataset_1004881_v1_fgdc.xml | https://erddap.bco-dmo.org/erddap/metadata/iso19115/xml/bcodmo_dataset_1004881_v1_iso19115.xml | https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_1004881_v1/index.htmlTable | https://osprey.bco-dmo.org/dataset/1004881
| https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_1004881_v1.rss | https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_1004881_v1&showErrors=false&email= | BCO-DMO | bcodmo_dataset_1004881_v1 |