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Dataset Title:  CTD profiles, down/up casts from R/V Blue Heron cruises BH09-05, BH09-12, BH10-
14, BH10-03 on Lake Superior; 2009-2010 (Lake Superior Radiocarbon project)
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Institution:  BCO-DMO   (Dataset ID: bcodmo_dataset_3911)
Range: longitude = -91.19483 to -86.59333°E, latitude = 46.891834 to 48.86667°N
Information:  Summary ? | License ? | Metadata | Background (external link) | Data Access Form | Files
 
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Things You Can Do With Your Graphs

Well, you can do anything you want with your graphs, of course. But some things you might not have considered are:

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  CruiseId_MonYear {
    String bcodmo_name "dataset_id";
    String description "Dataset Identifier by CruiseId and MonYear of data collection";
    String long_name "Cruise Id Mon Year";
    String units "text";
  }
  Dataset_Id {
    String bcodmo_name "dataset_id";
    String description "Dataset Id from CTD filename";
    String long_name "Dataset Id";
    String units "text";
  }
  Date_UTC {
    Int32 _FillValue 2147483647;
    Int32 actual_range 20090613, 20100901;
    String bcodmo_name "date_utc";
    String description "Date UTC in YYYYMMDD format.";
    String long_name "Date UTC";
    String units "unitless";
  }
  Time_UTC {
    String bcodmo_name "time_utc";
    String description "Time UTC";
    String long_name "Time UTC";
    String units "HHMMSS";
  }
  Date_Local {
    Int32 _FillValue 2147483647;
    Int32 actual_range 20090613, 20100901;
    String bcodmo_name "date_local";
    String description "Date Local (CDST) in YYYYMMDD format.";
    String long_name "Date Local";
    String units "unitless";
  }
  Time_Local {
    String bcodmo_name "time_local";
    String description "Time (Local (CDST)";
    String long_name "Time Local";
    String units "HHMMSS";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue NaN;
    Float64 actual_range 46.891833, 48.866667;
    String axis "Y";
    String bcodmo_name "latitude";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String description "Station Latitude (South is negative)";
    String ioos_category "Location";
    String long_name "Latitude";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/LATX/";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 _FillValue NaN;
    Float64 actual_range -91.194833, -86.593333;
    String axis "X";
    String bcodmo_name "longitude";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String description "Station Longitude (West is negative)";
    String ioos_category "Location";
    String long_name "Longitude";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/LONX/";
    String standard_name "longitude";
    String units "degrees_east";
  }
  PrDM {
    Float64 _FillValue NaN;
    Float64 actual_range -2.0, 380.0;
    String bcodmo_name "pressure";
    String description "Pressure Digiquartz";
    String long_name "PR DM";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/PRESPR01/";
    String units "decibars";
  }
  T0 {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 19.5066;
    String bcodmo_name "temperature";
    String description "Temperature ITS-90";
    String long_name "T0";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/TEMPP901/";
    String units "degrees celsius";
  }
  C0 {
    Float64 _FillValue NaN;
    Float64 actual_range -0.0, 89.129701;
    String bcodmo_name "conductivity";
    String description "Conductivity";
    String long_name "C0";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P02/current/CNDC/";
    String units "uS/cm";
  }
  Specc {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 106.283;
    String bcodmo_name "specific conductance";
    String description "Specific Conductance";
    String long_name "Specc";
    String units "uS/cm";
  }
  Xmiss {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 105.6638;
    String bcodmo_name "transmission";
    String description "Beam Transmission Chelsea/Seatech/Wetlab Cstar";
    String long_name "Xmiss";
    String units "percentage";
  }
  WetStar {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 60.4405;
    String bcodmo_name "fluorescence";
    String description "Fluorescence Wetlab Wetstar";
    String long_name "Wet Star";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CPHLPM01/";
    String units "mg/m^3";
  }
  Dz_dt {
    Float32 _FillValue NaN;
    Float32 actual_range -50.52, 300.42;
    String bcodmo_name "descent_rate";
    String description "Descent Rate";
    String long_name "DZ DT";
    String units "meters/sec";
  }
  Ph {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 9.537;
    String bcodmo_name "pH";
    Float64 colorBarMaximum 9.0;
    Float64 colorBarMinimum 7.0;
    String description "pH";
    String long_name "Sea Water Ph Reported On Total Scale";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/PHXXZZXX/";
    String units "dimensionless";
  }
  Par {
    Float32 _FillValue NaN;
    Float32 actual_range -16.86, 10302.0;
    String bcodmo_name "PAR";
    Float64 colorBarMaximum 70.0;
    Float64 colorBarMinimum 0.0;
    String description "PAR/Irradiance  Biospherical/Licor";
    String long_name "Downwelling Photosynthetic Photon Radiance In Sea Water";
    String units "uEinsteins/m^2/sec";
  }
  Spar {
    Float32 _FillValue NaN;
    Float32 actual_range 10.969, 2498.1;
    String bcodmo_name "SPAR";
    String description "SPAR/Surface Irradiance";
    String long_name "Spar";
    String units "uEinsteins/m^2/sec";
  }
  Sal00 {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 0.0514;
    String bcodmo_name "sal";
    String description "Salinity";
    String long_name "Sal00";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/PSALST01/";
    String units "PSU";
  }
  Sbeox0Mm {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 403.905;
    String bcodmo_name "dissolved Oxygen";
    String description "Oxygen SBE 43 (umol)";
    String long_name "Sbeox0 Mm";
    String units "umol/Kg";
  }
  Sbeox0Mg {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 14.32936;
    String bcodmo_name "dissolved Oxygen";
    String description "Oxygen SBE 43 (mg)";
    String long_name "Sbeox0 Mg";
    String units "mg/l";
  }
  Sbeox0PS {
    Float64 _FillValue NaN;
    Float64 actual_range 83.82637, 126.57318;
    String bcodmo_name "O2sat";
    String description "Oxygen SBE 43 [(% saturation)";
    String long_name "Sbeox0 PS";
    String units "percentage";
  }
  WetCDOM {
    Float32 _FillValue NaN;
    Float32 actual_range -0.0821, 248.7707;
    String bcodmo_name "fluorescence";
    String description "Fluorescence Wetlab CDOM";
    String long_name "Wet CDOM";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CPHLPM01/";
    String units "mg/m^3";
  }
  Lat {
    Float64 _FillValue NaN;
    Float64 actual_range -327.20834, 329.78278;
    String bcodmo_name "latitude";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String description "Data Latitude (South is negative)";
    String long_name "Latitude";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/LATX/";
    String standard_name "latitude";
    String units "decimal degrees";
  }
  Lon {
    Float64 _FillValue NaN;
    Float64 actual_range -330.10659, 521.02042;
    String bcodmo_name "longitude";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String description "Data Longitude (West is negative)";
    String long_name "Longitude";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/LONX/";
    String standard_name "longitude";
    String units "decimal degrees";
  }
  Scan {
    Int32 _FillValue 2147483647;
    Int32 actual_range -71, 455013;
    String bcodmo_name "scan";
    String description "Scan Count";
    String long_name "Scan";
    String units "dimensionless";
  }
  TimeM {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 242.3429;
    String bcodmo_name "time_elapsed";
    String description "Time Elapsed";
    String long_name "Time M";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/ELTMZZZZ/";
    String units "minutes";
  }
  Nbin {
    Int32 _FillValue 2147483647;
    Int32 actual_range -347, 50896;
    String bcodmo_name "nbin";
    String description "Number of scans per bin";
    String long_name "Nbin";
    String units "dimensionless";
  }
  Flag {
    Float32 _FillValue NaN;
    Float32 actual_range -9.99e-29, 0.0;
    String bcodmo_name "flag";
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String description "flag";
    String long_name "Flag";
    String units "dimensionless";
  }
 }
  NC_GLOBAL {
    String access_formats ".htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson";
    String acquisition_description "(see individual deployments)";
    String awards_0_award_nid "54787";
    String awards_0_award_number "OCE-0825600";
    String awards_0_data_url "http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0825600";
    String awards_0_funder_name "NSF Division of Ocean Sciences";
    String awards_0_funding_acronym "NSF OCE";
    String awards_0_funding_source_nid "355";
    String awards_0_program_manager "Donald L. Rice";
    String awards_0_program_manager_nid "51467";
    String cdm_data_type "Other";
    String comment 
"Lake Superior Radiocarbon - Multi Year CTD Profile Data - Down/Up Casts - Binned 
  Version: 18 April 2013 
  PIs: Minor, Werne 
  
  CTD Profile Data - Down/Up Casts - Binned - BH09-05";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "info@bco-dmo.org";
    String creator_name "BCO-DMO";
    String creator_type "institution";
    String creator_url "https://www.bco-dmo.org/";
    String data_source "extract_data_as_tsv version 2.3  19 Dec 2019";
    String date_created "2013-04-12T15:52:15Z";
    String date_modified "2019-10-29T16:02:43Z";
    String defaultDataQuery "&time<now";
    String doi "10.1575/1912/bco-dmo.3911.1";
    Float64 Easternmost_Easting -86.593333;
    Float64 geospatial_lat_max 48.866667;
    Float64 geospatial_lat_min 46.891833;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -86.593333;
    Float64 geospatial_lon_min -91.194833;
    String geospatial_lon_units "degrees_east";
    String history 
"2021-12-04T01:53:47Z (local files)
2021-12-04T01:53:47Z https://erddap.bco-dmo.org/tabledap/bcodmo_dataset_3911.das";
    String infoUrl "https://www.bco-dmo.org/dataset/3911";
    String institution "BCO-DMO";
    String instruments_0_acronym "Niskin bottle";
    String instruments_0_dataset_instrument_description 
"SeaBird Model 911 plus CTD (deck unit) with D.O. sensor, pH/ORP sensor, fluorometer, CDOM, transmissometer, PAR sensor, and altimeter.
Seabird 32 Carousel with 12 8-liter bottle capacity";
    String instruments_0_dataset_instrument_nid "6132";
    String instruments_0_description "A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends.  The bottles can be attached individually on a hydrowire or deployed in 12, 24 or 36 bottle Rosette systems mounted on a frame and combined with a CTD.  Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc.";
    String instruments_0_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/";
    String instruments_0_instrument_name "Niskin bottle";
    String instruments_0_instrument_nid "413";
    String instruments_0_supplied_name "Niskin bottle";
    String instruments_1_acronym "CTD SBE 911plus";
    String instruments_1_dataset_instrument_description 
"SeaBird Model 911 plus CTD (deck unit) with D.O. sensor, pH/ORP sensor, fluorometer, CDOM, transmissometer, PAR sensor, and altimeter.
Seabird 32 Carousel with 12 8-liter bottle capacity";
    String instruments_1_dataset_instrument_nid "6131";
    String instruments_1_description "The Sea-Bird SBE 911plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure.  The SBE 911plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9plus and SBE 11plus is called a SBE 911plus.  The SBE 9plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3plus and SBE 4). The SBE 9plus CTD can be configured with up to eight auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). more information from Sea-Bird Electronics";
    String instruments_1_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L22/current/TOOL0058/";
    String instruments_1_instrument_name "CTD Sea-Bird SBE 911plus";
    String instruments_1_instrument_nid "591";
    String instruments_1_supplied_name "CTD Sea-Bird SBE 911plus";
    String keywords "active, available, bco, bco-dmo, biological, cdom, chemical, chemistry, colored, cruise, CruiseId_MonYear, data, dataset, Dataset_Id, date, Date_Local, Date_UTC, dissolved, dmo, downwelling, downwelling_photosynthetic_photon_radiance_in_sea_water, Dz_dt, earth, Earth Science > Oceans > Ocean Chemistry > pH, Earth Science > Oceans > Ocean Optics > Photosynthetically Active Radiation, Earth Science > Oceans > Ocean Optics > Radiance, erddap, flag, Lat, latitude, local, Lon, longitude, management, matter, monthly, nbin, ocean, oceanography, oceans, office, optics, organic, Par, photon, photosynthetic, photosynthetically, PrDM, preliminary, radiance, radiation, reported, sal00, sbeox0, Sbeox0Mg, Sbeox0Mm, Sbeox0PS, scale, scan, science, sea, sea_water_ph_reported_on_total_scale, seawater, spar, specc, star, time, Time_Local, Time_UTC, TimeM, total, water, wet, WetCDOM, WetStar, xmiss, year";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "https://www.bco-dmo.org/dataset/3911/license";
    String metadata_source "https://www.bco-dmo.org/api/dataset/3911";
    Float64 Northernmost_Northing 48.866667;
    String param_mapping "{'3911': {'Latitude': 'flag - latitude', 'Longitude': 'flag - longitude', 'PrDM': 'flag - depth'}}";
    String parameter_source "https://www.bco-dmo.org/mapserver/dataset/3911/parameters";
    String people_0_affiliation "University of Minnesota Duluth";
    String people_0_affiliation_acronym "LLO-UMD";
    String people_0_person_name "Elizabeth C. Minor";
    String people_0_person_nid "51349";
    String people_0_role "Principal Investigator";
    String people_0_role_type "originator";
    String people_1_affiliation "University of Minnesota Duluth";
    String people_1_affiliation_acronym "LLO-UMD";
    String people_1_person_name "Josef P. Werne";
    String people_1_person_nid "51350";
    String people_1_role "Co-Principal Investigator";
    String people_1_role_type "originator";
    String people_2_affiliation "University of Minnesota Duluth";
    String people_2_affiliation_acronym "LLO-UMD";
    String people_2_person_name "Elizabeth C. Minor";
    String people_2_person_nid "51349";
    String people_2_role "Contact";
    String people_2_role_type "related";
    String people_3_affiliation "Woods Hole Oceanographic Institution";
    String people_3_affiliation_acronym "WHOI BCO-DMO";
    String people_3_person_name "Stephen R. Gegg";
    String people_3_person_nid "50910";
    String people_3_role "BCO-DMO Data Manager";
    String people_3_role_type "related";
    String project "Lake Superior Radiocarbon";
    String projects_0_acronym "Lake Superior Radiocarbon";
    String projects_0_description 
"Organic carbon present in aquatic ecosystems has the potential to either be sequestered by sedimentary organic matter or recycled and contributed to the atmosphere through microbial respiration. Ultimately, the fate of organic matter is dependant upon its source, as well as the physical transport mechanisms and biogeochemical transformations it is exposed to in the water column. Because these processes vary significantly within aquatic systems, such as the ocean, it is difficult to assess the biogeochemical importance of organic carbon; however, it is a problem of critical importance whose results could be utilized to resolve key issues in global biogeochemical carbon cycles and to determine the net heterotrophy of most aquatic environments.
Scientists from the University of Minnesota-Duluth and Virginia Commonwealth University would address this problem by studying organic carbon dynamics in Lake Superior because its biogeochemistry is similar to that of the world ocean. Using Lake Superior as a natural laboratory, the researchers plan to carry out radiocarbon measurements of particulate organic carbon (POC), dissolved organic carbon (DOC), dissolved inorganic carbon (DIC), and bacterially-respired CO2, as well as obtain the chemical composition of DOC and POC during stratified and non-stratified periods. Results would be used to identify the sources of carbon in the lake and determined transformations of carbon between POC, DOC, DIC, and bacterially-respired CO2.
Educational impacts include workshops and presentation for K-12 audiences as well as research and training opportunities for graduate and undergraduate students in Water Resources Science and Biochemistry classes.
Cruise pictures and info (for a general audience)";
    String projects_0_end_date "2011-08";
    String projects_0_geolocation "Lake Superior";
    String projects_0_name "How important is quote old unquote Carbon in Lake Superior.  A Radiocarbon Investigation";
    String projects_0_project_nid "2156";
    String projects_0_start_date "2008-09";
    String publisher_name "Biological and Chemical Oceanographic Data Management Office (BCO-DMO)";
    String publisher_type "institution";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 46.891833;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary "CTD profiles, down/up casts from R/V Blue Heron cruises BH09-05, BH09-12, BH10-14, BH10-03 on Lake Superior; 2009-2010.";
    String title "CTD profiles, down/up casts from R/V Blue Heron cruises BH09-05, BH09-12, BH10-14, BH10-03 on Lake Superior; 2009-2010 (Lake Superior Radiocarbon project)";
    String version "1";
    Float64 Westernmost_Easting -91.194833;
    String xml_source "osprey2erddap.update_xml() v1.3";
  }
}

 

Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP (external link) Data Access Protocol (DAP) (external link) and its selection constraints (external link).

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names, followed by a collection of constraints (e.g., variable<value), each preceded by '&' (which is interpreted as "AND").

For details, see the tabledap Documentation.


 
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