Accessing BCO-DMO data
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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_778021 | https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_778021.graph | https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_778021/ | public | [dis_15N2_gas] - Analysis of dissolved 15N2 gas standards by Membrane Inlet Mass Spectrometry (EAGER: Collaborative Research: Detection limit in marine nitrogen fixation measurements - Constraints of rates from the mesopelagic ocean) | In order to verify that measurements of the 15N2 atom% of dissolved N2 gas samples effectuated by Membrane Inlet Mass Spectrometry are accurate, we developed a specific protocol to prepare dissolved 15N2 gas standards. We detail the protocol herein, and report representative MIMS measurements of the prepared standards.\n\ncdm_data_type = Other\nVARIABLES:\nBottle_vol (mililiters (mL))\nSample (unitless)\nInjection_15N2 (Injection 15 N2, mililiters (mL))\nExpected_15N_At_pcnt (Expected 15 N At Pcnt, unitless)\nTime_of_analysis (unitless)\nm_z_28 (unitless)\nm_z_29 (unitless)\nm_z_30 (unitless)\nm_z_32 (unitless)\nm_z_40 (unitless)\nN2_Ar (unitless)\nratio_28_29 (unitless)\nratio_28_30 (unitless)\nAt_15N_pcnt (At 15 N Pcnt, unitless)\nAt_15N_pcnt_avg (At 15 N Pcnt Avg, unitless)\n | https://erddap.bco-dmo.org/erddap/metadata/iso19115/xml/bcodmo_dataset_778021_iso19115.xml | https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_778021/index.htmlTable | https://www.bco-dmo.org/dataset/778021
| https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_778021.rss | https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_778021&showErrors=false&email= | BCO-DMO | bcodmo_dataset_778021 | ||||
| https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_778083 | https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_778083.graph | https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_778083/ | public | [mz_30_int_from_o2] - Test of potential mass to charge 30 interferences from O2 (EAGER: Collaborative Research: Detection limit in marine nitrogen fixation measurements - Constraints of rates from the mesopelagic ocean) | Molecular oxygen (O2) has been documented to ionize partially to NO+ in mass spectrometer sources, generating a signal that overlaps with that of 15N2 (mass-to-charge of 30). Here, we tested whether O2 needs to be specifically removed from the sample streams of the Membrane Inlet Mass Spectrometer and the Isotope Ratio Mass Spectrometer in order to properly quantitate 15N2 atom% at pertinent concentrations. Sample streams with and without O2 yielded similar signals, suggesting that O2 does not interfere with the 15N2 atom% measurements in the experimental range with the given instruments.\n\ncdm_data_type = Other\nVARIABLES:\nSample (unitless)\nTime_of_analysis (unitless)\nm_z_28 (unitless)\nm_z_29 (unitless)\nm_z_30 (unitless)\nm_z_32 (unitless)\nm_z_40 (unitless)\nN2_Ar (unitless)\nratio_28_29 (unitless)\nratio_28_30 (unitless)\natom_pcnt_15n (unitless)\nNotes (unitless)\n | https://erddap.bco-dmo.org/erddap/metadata/iso19115/xml/bcodmo_dataset_778083_iso19115.xml | https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_778083/index.htmlTable | https://www.bco-dmo.org/dataset/778083
| https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_778083.rss | https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_778083&showErrors=false&email= | BCO-DMO | bcodmo_dataset_778083 | ||||
| https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_778126 | https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_778126.graph | https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_778126/ | public | [trial_a] - Trial A test of the dissolution method for estimates of the 15N2 atom% of incubations (EAGER: Collaborative Research: Detection limit in marine nitrogen fixation measurements - Constraints of rates from the mesopelagic ocean) | The \\u201cdissolution\\u201d method to measure N2 fixation rates with 15N2 gas tracer involves the preparation of 15N2-enriched water that is then added to each incubation bottle. Investigators typically measure the 15N2 atom% of the 15N2-enriched inoculum by MIMS, and extrapolate the 15N2 atom% in the incubations based on the inoculum value. Here, we demonstrate that such extrapolation yields inaccurate estimates of the 15N2 atom% of incubations. The latter should be measured directly.\n\ncdm_data_type = Other\nVARIABLES:\nSample (unitless)\nBaro_Press (unknown)\nTime_of_analysis (unitless)\nm_z_28 (unitless)\nm_z_29 (unitless)\nm_z_30 (unitless)\nm_z_32 (unitless)\nm_z_40 (unitless)\nN2_Ar (unitless)\nratio_28_29 (unitless)\nratio_28_30 (unitless)\nmeas_at_pcnt (unitless)\navg_measured_a_pcnt (unitless)\n | https://erddap.bco-dmo.org/erddap/metadata/iso19115/xml/bcodmo_dataset_778126_iso19115.xml | https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_778126/index.htmlTable | https://www.bco-dmo.org/dataset/778126
| https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_778126.rss | https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_778126&showErrors=false&email= | BCO-DMO | bcodmo_dataset_778126 |