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Dataset Title:  Seabird and marine mammal observations from the Drake Passage transits aboard
RV Laurence M Gould (LMG1410, LMG1504, LMG1509) and coastal zone operations
from 2014 to 2015. Subscribe RSS
Institution:  BCO-DMO   (Dataset ID: bcodmo_dataset_705477)
Range: longitude = -66.111664 to -56.083447°E, latitude = -64.9272 to -53.9024°N
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 {
  deployment {
    String bcodmo_name "deployno";
    String description "Deployment IDs aboard RV Laurence M Gould";
    String long_name "Deployment";
    String units "unitless";
  }
  year {
    Int16 _FillValue 32767;
    Int16 actual_range 2014, 2015;
    String bcodmo_name "year";
    String description "Year sampling took place; YYYY";
    String long_name "Year";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/";
    String units "unitless";
  }
  month {
    Byte _FillValue 127;
    Byte actual_range 4, 11;
    String bcodmo_name "month";
    String description "Month sampling took place; MM";
    String long_name "Month";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/MNTHXXXX/";
    String units "unitless";
  }
  day {
    Byte _FillValue 127;
    Byte actual_range 1, 31;
    String bcodmo_name "day";
    String description "Day of the month that sampling took place; MM";
    String long_name "Day";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/DAYXXXXX/";
    String units "unitless";
  }
  hours {
    Float32 _FillValue NaN;
    Float32 actual_range 1.05, 13.92;
    String bcodmo_name "time_elapsed";
    String description "Number of hours of survey effort";
    String long_name "Hours";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/ELTMZZZZ/";
    String units "hours";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue NaN;
    Float64 actual_range -64.9272, -53.9024;
    String axis "Y";
    String bcodmo_name "latitude";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String description "Latitude";
    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 -66.11166696, -56.08344835;
    String axis "X";
    String bcodmo_name "longitude";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String description "Longitude";
    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";
  }
 }
  NC_GLOBAL {
    String access_formats ".htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson";
    String acquisition_description 
"Methodologies are those described in Force et al., 2015.\\u00a0
 
Visual survey effort for seabirds, marine mammals and environmental conditions
(e.g., sea state, sea ice conditions) was conducted continuously during
daylight hours when the ship was in transit.\\u00a0 An observer worked inside
the bridge (starboard side) of the R/V Laurence M. Gould and recorded all
sightings onto a computer synced to the ships\\u2019 data acquisition system.
Survey effort covered the Patagonia shelf, central Drake Passage (north and
south of the Polar Front), coastal Bransfield Strait, Gerlache Strait,
Neumeyer Channel, and northern waters around King George Island and Elephant
Island.\\u00a0 Moreover, visual survey effort was conducted during all fishing
and CTD operations coinciding with other projects during all three cruises.";
    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 
"Visual Survey 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 2.3  19 Dec 2019";
    String date_created "2017-06-19T20:54:29Z";
    String date_modified "2019-03-27T20:25:10Z";
    String defaultDataQuery "&time<now";
    String doi "10.1575/1912/bco-dmo.705477.1";
    Float64 Easternmost_Easting -56.08344835;
    Float64 geospatial_lat_max -53.9024;
    Float64 geospatial_lat_min -64.9272;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -56.08344835;
    Float64 geospatial_lon_min -66.11166696;
    String geospatial_lon_units "degrees_east";
    String history 
"2024-04-18T23:26:14Z (local files)
2024-04-18T23:26:14Z https://erddap.bco-dmo.org/tabledap/bcodmo_dataset_705477.das";
    String infoUrl "https://www.bco-dmo.org/dataset/705477";
    String institution "BCO-DMO";
    String keywords "bco, bco-dmo, biological, chemical, data, dataset, day, deployment, dmo, erddap, hours, latitude, longitude, management, month, oceanography, office, preliminary, year";
    String license "https://www.bco-dmo.org/dataset/705477/license";
    String metadata_source "https://www.bco-dmo.org/api/dataset/705477";
    Float64 Northernmost_Northing -53.9024;
    String param_mapping "{'705477': {'lat': 'master - latitude', 'lon': 'master - longitude'}}";
    String parameter_source "https://www.bco-dmo.org/mapserver/dataset/705477/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 "DrakeBioGould";
    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 "Biological and Chemical Oceanographic Data Management Office (BCO-DMO)";
    String publisher_type "institution";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -64.9272;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary "Seabird and marine mammal observations from the Drake Passage transits aboard RV Laurence M Gould (LMG1410, LMG1504, LMG1509) and coastal zone operations from 2014 to 2015.";
    String title "Seabird and marine mammal observations from the Drake Passage transits aboard RV Laurence M Gould (LMG1410, LMG1504, LMG1509) and coastal zone operations from 2014 to 2015.";
    String version "1";
    Float64 Westernmost_Easting -66.11166696;
    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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