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Dataset Title:  IKMT samples and underwater video recordings collected in the Drake Passage
from R/V Laurence M. Gould (LMG1504, LMG1509, LMG1410) from 2014-2015
  RSS
Institution:  BCO-DMO   (Dataset ID: bcodmo_dataset_705556)
Range: longitude = -65.02 to -55.97°E, latitude = -64.95 to -54.89°N, depth = 50.0 to 180.0m, time = 2014-10-29T01:34:00Z to 2015-11-11T23:37:00Z
Information:  Summary ? | License ? | ISO 19115 | 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 {
  station {
    String description "Station where samples were taken";
    String ioos_category "Identifier";
    String long_name "Station";
    String units "unitless";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.41454644e+9, 1.44728502e+9;
    String axis "T";
    String description "Date/Time (UTC) ISO formatted";
    String ioos_category "Time";
    String long_name "ISO Date Time UTC";
    String source_name "ISO_DateTime_UTC";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  date {
    String description "Date samples were taken; YYYY/MM/DD";
    String ioos_category "Time";
    String long_name "Date";
    String units "unitless";
  }
  start_GMT {
    String description "Start time of net tow; HH:MM";
    String ioos_category "Unknown";
    String long_name "Start GMT";
    String units "unitless";
  }
  end_GMT {
    String description "End time of net tow; HH:MM";
    String ioos_category "Unknown";
    String long_name "End GMT";
    String units "unitless";
  }
  lat_deg {
    Byte _FillValue 127;
    Byte actual_range 54, 64;
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String description "Latitude; degrees (S)";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees minutes";
  }
  lat_min {
    Float32 _FillValue NaN;
    Float32 actual_range 0.1, 59.88;
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String description "Latitude; minutes";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees minutes";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue NaN;
    Float64 actual_range -64.95, -54.89;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String description "Latitude in decimal degrees";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  lon_deg {
    Byte _FillValue 127;
    Byte actual_range 55, 65;
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String description "Longitude; degrees (W)";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees minutes";
  }
  lon_min {
    Float32 _FillValue NaN;
    Float32 actual_range 1.0, 59.71;
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String description "Longitude; minutes";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees minutes";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 _FillValue NaN;
    Float64 actual_range -65.02, -55.97;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String description "Longitude in decimal degrees";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  biogeographic_zone {
    String description "Code for the biogeographic zone in which sampling took place: SAZ=Subantarctic Zone; PFZ=Polar Frontal Zone; AZ=Antarctic Zone; ACZ=Antarctic Coastal (Continental) Zone";
    String ioos_category "Unknown";
    String long_name "Biogeographic Zone";
    String units "unitless";
  }
  DIEL {
    String description "Indicates day night or twiglight sample collection on net deployment 1 hour before and after local sunrise and sunset.";
    String ioos_category "Unknown";
    String long_name "DIEL";
    String units "unitless";
  }
  volume_filtered {
    Float32 _FillValue NaN;
    Float32 actual_range 2746.3, 11890.2;
    String description "Volume of water filtered through the net";
    String ioos_category "Unknown";
    String long_name "Volume Filtered";
    String units "meters cubed";
  }
  SST {
    Float32 _FillValue NaN;
    Float32 actual_range -1.65, 7.55;
    String description "Sea surface temperature";
    String ioos_category "Temperature";
    String long_name "Sea Surface Temperature";
    String units "celsius";
  }
  bottom_depth {
    Int16 _FillValue 32767;
    Int16 actual_range 130, 4873;
    String description "Bottom depth at sampling location";
    String ioos_category "Location";
    String long_name "Bottom Depth";
    String units "meters";
  }
  wind_speed {
    Float32 _FillValue NaN;
    Float32 actual_range 3.0, 36.0;
    Float64 colorBarMaximum 15.0;
    Float64 colorBarMinimum 0.0;
    String description "Wind speed at time of sampling";
    String ioos_category "Wind";
    String long_name "Wind Speed";
    String units "knots";
  }
  wind_direction {
    Float32 _FillValue NaN;
    Float32 actual_range 0.18, 355.0;
    Float64 colorBarMaximum 360.0;
    Float64 colorBarMinimum 0.0;
    String description "Wind direction at time of sampling";
    String ioos_category "Wind";
    String long_name "Wind From Direction";
    String units "degrees";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float64 _FillValue NaN;
    Float64 actual_range 50.0, 180.0;
    String axis "Z";
    String description "The depth at which the net tow took plac";
    String ioos_category "Location";
    String long_name "Tow Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  underwater_video {
    String description "Indicates whether videorecordings were made at each station and if so to what depths.";
    String ioos_category "Unknown";
    String long_name "Underwater Video";
    String units "unitless";
  }
  notes {
    String description "Notes and observations";
    String ioos_category "Unknown";
    String long_name "Notes";
    String units "unitless";
  }
 }
  NC_GLOBAL {
    String access_formats ".htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson,.odvTxt";
    String acquisition_description 
"Net Sampling:
 
Open oblique net tows were made with a 1.8 m Isaacs-Kidd Midwater Trawl
(IKMT), fitted with 505 um mesh and a protected cod end, fished from 0 to
~155m at ship speeds of ~2 kts.
 
During LMG14-10 and LMG15-04 an underwater video camera system was suspended
from the IKMT spreader bar allowing video recordings of material being fished
by the net at some stations (indicated in data log).\\u00a0";
    String awards_0_award_nid "683960";
    String awards_0_award_number "PLR-1347911";
    String awards_0_data_url "http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1347911";
    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 "Christian Fritsen";
    String awards_0_program_manager_nid "683959";
    String cdm_data_type "Other";
    String comment 
"Net Tow Data 
  V. Loeb and J. Santora, PIs 
  Version 19 June 2017";
    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 2.2d  13 Jun 2019";
    String date_created "2017-06-20T17:08:39Z";
    String date_modified "2019-03-27T20:19:29Z";
    String defaultDataQuery "&time";
    String doi "10.1575/1912/bco-dmo.705556.1";
    Float64 Easternmost_Easting -55.97;
    Float64 geospatial_lat_max -54.89;
    Float64 geospatial_lat_min -64.95;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -55.97;
    Float64 geospatial_lon_min -65.02;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 180.0;
    Float64 geospatial_vertical_min 50.0;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"2019-07-17T10:42:43Z (local files)
2019-07-17T10:42:43Z https://erddap.bco-dmo.org/tabledap/bcodmo_dataset_705556.das";
    String infoUrl "https://www.bco-dmo.org/dataset/705556";
    String institution "BCO-DMO";
    String instruments_0_acronym "camera";
    String instruments_0_dataset_instrument_description "Used for underwater video recording";
    String instruments_0_dataset_instrument_nid "705625";
    String instruments_0_description "All types of photographic equipment including stills, video, film and digital systems.";
    String instruments_0_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/311/";
    String instruments_0_instrument_name "Camera";
    String instruments_0_instrument_nid "520";
    String instruments_0_supplied_name "GoPro Hero3+ Black Edition";
    String keywords "atmosphere, atmospheric, bco, bco-dmo, biogeographic, biogeographic_zone, biological, bottom, bottom_depth, chemical, data, dataset, date, depth, diel, direction, dmo, earth, Earth Science > Atmosphere > Atmospheric Winds > Surface Winds, end, end_GMT, erddap, filtered, identifier, iso, lat_deg, lat_min, latitude, lon_deg, lon_min, longitude, management, notes, oceanography, office, preliminary, science, sea, speed, SST, start, start_GMT, station, surface, temperature, time, tow, tow_depth, underwater, underwater_video, video, volume, volume_filtered, wind, wind_direction, wind_from_direction, wind_speed, winds, zone";
    String keywords_vocabulary "GCMD Science Keywords";
    String license 
"The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.";
    String metadata_source "https://www.bco-dmo.org/api/dataset/705556";
    Float64 Northernmost_Northing -54.89;
    String param_mapping "{'705556': {'lat': 'master - latitude', 'tow_depth': 'master - depth', 'lon': 'master - longitude', 'ISO_DateTime_UTC': 'master - time'}}";
    String parameter_source "https://www.bco-dmo.org/mapserver/dataset/705556/parameters";
    String people_0_affiliation "Moss Landing Marine Laboratories";
    String people_0_affiliation_acronym "MLML";
    String people_0_person_name "Valerie Jean Loeb";
    String people_0_person_nid "683963";
    String people_0_role "Principal Investigator";
    String people_0_role_type "originator";
    String people_1_affiliation "University of California-Santa Cruz";
    String people_1_affiliation_acronym "UC Santa Cruz";
    String people_1_person_name "Jarrod A Santora";
    String people_1_person_nid "683965";
    String people_1_role "Co-Principal Investigator";
    String people_1_role_type "originator";
    String people_2_affiliation "Moss Landing Marine Laboratories";
    String people_2_affiliation_acronym "MLML";
    String people_2_person_name "Valerie Jean Loeb";
    String people_2_person_nid "683963";
    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 "Hannah Ake";
    String people_3_person_nid "650173";
    String people_3_role "BCO-DMO Data Manager";
    String people_3_role_type "related";
    String project "Pilot Study:  Addition of Biological Sampling to Drake Passage Transits of the \"L.M. Gould\"";
    String projects_0_acronym "DrakeBioGould";
    String projects_0_description 
"PI supplied abstract:
A 50+ year warming trend in the Southern Ocean has been most dramatic in�Drake Passage�and likely impacts ecosystem structure here. Acoustic Doppler Current Profiler (ADCP) records from multiple NSF�“L.M. Gould”�supply transits of Drake Passage from 1999 to present demonstrate spatial and temporal variability in acoustics backscattering.�Acoustics�backscattering strength in the upper water column corresponds to zooplankton and nekton biomass that supports predator populations. However, for much of Drake�Passage�the identity of taxa contributing to this acoustically detected biomass is not known. This project would introduce a biological component to�“L.M. Gould”�transits of Drake Passage with the goal of determining the identity of taxa responsible for the backscattering records obtained by ADCP and relating these to higher trophic levels (seabird/marine mammal). Net sampling during spring and fall transits will permit assessment of diel and seasonal changes in the abundance and taxonomic composition of zooplankton and top predators represented between Patagonia and the Antarctic Peninsula. Net samples and depth-referenced video records taken in conjunction with ADCP profiles will permit the identification of the dominant acoustic backscatters in the 3 biogeographic regions represented here, the Subantarctic, Polar Frontal, and Antarctic Zones. The validity of dominant backscattering taxa in the Antarctic Zone will be tested by comparing the ADCP records with abundant zooplankton data collected off the Antarctic Peninsula during January-March 1999-2009 as well with long-term top predator surveys. The broader impacts�also included�cruise�blogs�to Moss Landing Marine Laboratories and Monterey Academy of Oceanographic Science (Monterey High School, Monterey CA) plus involvement with MAOS �faculty and students providing�first-hand�data and insight into marine research in a near�real-time�format. �The faculty used this opportunity to engage students in “real” science while focusing on implementing instruction using the Next Generation Science Standards.";
    String projects_0_end_date "2016-11";
    String projects_0_geolocation "Drake Passage, South Shetland Islands";
    String projects_0_name "Pilot Study:  Addition of Biological Sampling to Drake Passage Transits of the \"L.M. Gould\"";
    String projects_0_project_nid "683961";
    String projects_0_start_date "2013-12";
    String publisher_name "Hannah Ake";
    String publisher_role "BCO-DMO Data Manager(s)";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -64.95;
    String standard_name_vocabulary "CF Standard Name Table v29";
    String summary "IKMT samples and underwater video recordings collected in the Drake Passage from R/V Laurence M. Gould (LMG1504, LMG1509, LMG1410) from 2014-2015";
    String time_coverage_end "2015-11-11T23:37:00Z";
    String time_coverage_start "2014-10-29T01:34:00Z";
    String title "IKMT samples and underwater video recordings collected in the Drake Passage from R/V Laurence M. Gould (LMG1504, LMG1509, LMG1410) from 2014-2015";
    String version "1";
    Float64 Westernmost_Easting -65.02;
    String xml_source "osprey2erddap.update_xml() v1.5-beta";
  }
}

 

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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