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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 | |
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https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_3470.subset | https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_3470 | https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_3470.graph | https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_3470/ | public | [GT10 - Nanomolar Nutrients - Surface] - PO4, NO3, NO2 surface concentrations along the US GEOTRACES North Atlantic Transect from the R/V Knorr KN199-04, KN199-05 cruises in the subtropical N. Atlantic during 2010 (U.S. GEOTRACES NAT project) (U.S. GEOTRACES North Atlantic Transect) | PO4, NO3, NO2 surface concentrations along the US GEOTRACES North Atlantic Transect from the R/V Knorr KN199-04, KN199-05 cruises in the subtropical N. Atlantic during 2010.\n\ncdm_data_type = Other\nVARIABLES:\ncruise_id (text)\nGeoFish_id (Geo Fish Id, integer)\nevent_GEOTRC (dimensionless)\nGeoTraces_ID (Geo Traces ID, integer)\nsample_GEOTRC (dimensionless)\ndate (unitless)\ntime2 (Time, HHMM)\nlatitude (degrees_north)\nlongitude (degrees_east)\nPO4 (Mass Concentration Of Phosphate In Sea Water, nmol/L)\nPO4_Flag (integer)\nNO3 (Mole Concentration Of Nitrate In Sea Water, nmol/L)\nNO3_Flag (integer)\nNO2 (Mole Concentration Of Nitrite In Sea Water, nmol/L)\nNO2_Flag (integer)\nRemarks (text)\ntime (ISO Date Time UTC, seconds since 1970-01-01T00:00:00Z)\n | https://erddap.bco-dmo.org/erddap/metadata/fgdc/xml/bcodmo_dataset_3470_fgdc.xml | https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_3470/index.htmlTable | https://www.bco-dmo.org/dataset/3470![]() | https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_3470.rss | https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_3470&showErrors=false&email= | BCO-DMO | bcodmo_dataset_3470 | |||
https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_957527_v1 | https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_957527_v1.graph | https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_957527_v1/ | public | [Open cell and single-step titration method comparison] - Open cell and single-step method for total alkalinity titrations from samples collected on R/V Mirai cruises MR23-06C and MR23-07 in the North Pacific and Western Arctic from September to November 2023 (US GEOTRACES GP17-OCE and GP17-ANT: Inorganic Carbon Cycling in the South Pacific and Southern Oceans by Direct Measurement) | Duplicate samples were collected for total alkalinity on two cruises in 2023 aboard the R/V Mirai (MR23-06C and MR23-07) in order to compare two different methods of total alkalinity titrations: the open cell with non-linear least squares fitting and single step with spectrophotometric endpoint detection. Measurements of dissolved inorganic carbon and pH on the total scale were also made as quality control checks. GLODAPv2 hinted at a potential offset between laboratories in the Pacific Ocean. We hypothesized that if non-negligible amounts of organic alkalinity were present, the different methods could be titrating different amounts leading to differences between the methods. The results show that any offset is within the uncertainty of the analytical precision and presence of organic alkalinity in open ocean waters remains inconclusive.\n\ncdm_data_type = Other\nVARIABLES:\nCruise (unitless)\nsample_ID (unitless)\nStation (unitless)\nCast (unitless)\nNiskinBottle_No (unitless)\nDate (unitless)\ntime_unitless (Time, unitless)\ntime (Iso_datetime_utc, seconds since 1970-01-01T00:00:00Z)\nlatitude (degrees_north)\nlongitude (degrees_east)\nCTD_Salinity (unitless)\nCTD_Salinity_flag (unitless)\nBottle_Salinity (unitless)\nBot_Sal_flag (unitless)\nCTD_Pressure (decibars (db))\nTotal_Alkalinity_Single_Step_method (micromoles per kilogram of seawater (umol/kg_sw))\nTotal_Alkalinity_Single_Step_Method_flag (unitless)\nTotal_Alkalinity_Open_Cell_Method (micromoles per kilogram of seawater (umol/kg_sw))\nTotal_Alkalinity_Open_Cell_Method_Flag (unitless)\n... (30 more variables)\n | https://erddap.bco-dmo.org/erddap/metadata/fgdc/xml/bcodmo_dataset_957527_v1_fgdc.xml | https://erddap.bco-dmo.org/erddap/metadata/iso19115/xml/bcodmo_dataset_957527_v1_iso19115.xml | https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_957527_v1/index.htmlTable | https://osprey.bco-dmo.org/dataset/957527![]() | https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_957527_v1.rss | https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_957527_v1&showErrors=false&email= | BCO-DMO | bcodmo_dataset_957527_v1 |