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Dataset Title:  Icebreaker dates and ice edge distance in McMurdo Sound, Antarctica from
austral years 1956/1957 to 2014/2015 (McMurdo Predator Prey project)
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Institution:  BCO-DMO   (Dataset ID: bcodmo_dataset_674992)
Range: longitude = 166.4686 to 166.4686°E, latitude = -77.8539 to -77.8539°N
Information:  Summary ? | License ? | ISO 19115 | Metadata | Background (external link) | Subset | Data Access Form | Files
 
Graph Type:  ?
X Axis: 
Y Axis: 
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Constraints ? Optional
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Constraint #2 ?
       
       
       
       
       
 
Server-side Functions ?
 distinct() ?
? ("Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.")
 
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   Minimum:   Maximum:   N Sections: 
Draw land mask: 
Y Axis Minimum:   Maximum:   
 
(Please be patient. It may take a while to get the data.)
 
Optional:
Then set the File Type: (File Type information)
and
or view the URL:
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    Click on the map to specify a new center point. ?
Zoom: 
[The graph you specified. Please be patient.]

 

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 {
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue NaN;
    Float64 actual_range -77.8539, -77.8539;
    String axis "Y";
    String bcodmo_name "latitude";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String description "Approximate latitude of sampling near McMurdo Station; Antarctica; south is negative";
    String ioos_category "Location";
    String long_name "Latitude";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/LATX/";
    String source_name "lat_approx";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 _FillValue NaN;
    Float64 actual_range 166.4686, 166.4686;
    String axis "X";
    String bcodmo_name "longitude";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String description "Approximate longitude of sampling near McMurdo Station; Antarctica; west is negative";
    String ioos_category "Location";
    String long_name "Longitude";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/LONX/";
    String source_name "lon_approx";
    String standard_name "longitude";
    String units "degrees_east";
  }
  austral_year {
    String bcodmo_name "year";
    String description "Austral year (start year/end year) in format yyyy/yy";
    String long_name "Austral Year";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/";
    String units "unitless";
  }
  start_year {
    Int16 _FillValue 32767;
    Int16 actual_range 1956, 2015;
    String bcodmo_name "year";
    String description "Year of icebreaker arrival at the edge of the fast ice";
    String long_name "Start Year";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/";
    String units "unitless";
  }
  start_month {
    Byte _FillValue 127;
    Byte actual_range 1, 12;
    String bcodmo_name "month";
    String description "Month of icebreaker arrival at the edge of the fast ice";
    String long_name "Start Month";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/MNTHXXXX/";
    String units "unitless";
  }
  start_day {
    Byte _FillValue 127;
    Byte actual_range 1, 30;
    String bcodmo_name "day";
    String description "Day of icebreaker arrival at the edge of the fast ice";
    String long_name "Start Day";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/DAYXXXXX/";
    String units "unitless";
  }
  arrival_year {
    Int16 _FillValue 32767;
    Int16 actual_range 1956, 2015;
    String bcodmo_name "year";
    String description "Year of icebreaker arrival at McMurdo Station";
    String long_name "Arrival Year";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/";
    String units "unitless";
  }
  arrival_month {
    Byte _FillValue 127;
    Byte actual_range 1, 12;
    String bcodmo_name "month";
    String description "Month of icebreaker arrival at McMurdo Station";
    String long_name "Arrival Month";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/MNTHXXXX/";
    String units "unitless";
  }
  arrival_day {
    Byte _FillValue 127;
    Byte actual_range 1, 30;
    String bcodmo_name "day";
    String description "Day of icebreaker arrival at McMurdo Station";
    String long_name "Arrival Day";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/DAYXXXXX/";
    String units "unitless";
  }
  edge_distance {
    Int16 _FillValue 32767;
    Int16 actual_range 11, 162;
    String bcodmo_name "ice_distance";
    String description "Distance between the fast ice edge and McMurdo Station on the date of ship arrival at the fast ice edge.";
    String long_name "Edge Distance";
    String units "kilometers";
  }
  ships {
    String bcodmo_name "ship";
    String description "Name of icebreaker vessel";
    String long_name "Ships";
    String units "unitless";
  }
 }
  NC_GLOBAL {
    String access_formats ".htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson";
    String acquisition_description 
"Data were acquired from scientist and icebreaker logbooks and contractor
records (DACSUSAP2012-13, pers. comm. P. McGillivary USCG, see link below).
\\u00a0\\u00a0See\\u00a0deployment:\\u00a0[McMurdo_IceBreakers_1957-2015](\\\\\"http://www
.bco-dmo.org/deployment/674984\\\\\")\\u00a0for a list of icebreakers used.
 
External link to more information about\\u00a0ice-breaking services at McMurdo
Station, Antarctica:  
 * [DACSUSAP2012-13
](\\\\\"https://www.fbo.gov/index?s=opportunity&mode=form&id=f761ad09e622aaac334d5a30cacf9f82&tab=core&_cview=0
\\\\\")[Ice-
breaking](\\\\\"https://www.fbo.gov/index?s=opportunity&mode=form&id=f761ad09e622aaac334d5a30cacf9f82&tab=core&_cview=0\\\\\")[
Services](\\\\\"https://www.fbo.gov/index?s=opportunity&mode=form&id=f761ad09e622aaac334d5a30cacf9f82&tab=core&_cview=0\\\\\")";
    String awards_0_award_nid "665130";
    String awards_0_award_number "PLR-0944747";
    String awards_0_data_url "http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0944747";
    String awards_0_funder_name "NSF Division of Polar Programs";
    String awards_0_funding_acronym "NSF PLR";
    String awards_0_funding_source_nid "490497";
    String awards_0_program_manager "Dr Chris H. Fritsen";
    String awards_0_program_manager_nid "50502";
    String awards_1_award_nid "665135";
    String awards_1_award_number "PLR-0944511";
    String awards_1_data_url "http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0944511";
    String awards_1_funder_name "NSF Division of Polar Programs";
    String awards_1_funding_acronym "NSF PLR";
    String awards_1_funding_source_nid "490497";
    String awards_1_program_manager "Dr Chris H. Fritsen";
    String awards_1_program_manager_nid "50502";
    String awards_2_award_nid "665138";
    String awards_2_award_number "PLR-0944694";
    String awards_2_data_url "http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0944694";
    String awards_2_funder_name "NSF Division of Polar Programs";
    String awards_2_funding_acronym "NSF PLR";
    String awards_2_funding_source_nid "490497";
    String awards_2_program_manager "Dr Chris H. Fritsen";
    String awards_2_program_manager_nid "50502";
    String cdm_data_type "Other";
    String comment 
"McMurdo Sound ice edge distance and icebreaker dates 
   PIs: Stacy Kim et al. 
     data version: 31 Jan 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 "2017-01-17T18:07:42Z";
    String date_modified "2017-07-07T13:22:49Z";
    String defaultDataQuery "&time<now";
    String doi "10.1575/1912/bco-dmo.708221";
    Float64 Easternmost_Easting 166.4686;
    Float64 geospatial_lat_max -77.8539;
    Float64 geospatial_lat_min -77.8539;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 166.4686;
    Float64 geospatial_lon_min 166.4686;
    String geospatial_lon_units "degrees_east";
    String history 
"2022-09-27T13:24:43Z (local files)
2022-09-27T13:24:43Z https://erddap.bco-dmo.org/tabledap/bcodmo_dataset_674992.das";
    String infoUrl "https://www.bco-dmo.org/dataset/674992";
    String institution "BCO-DMO";
    String keywords "arrival, arrival_day, arrival_month, arrival_year, austral, austral_year, bco, bco-dmo, biological, chemical, data, dataset, day, distance, dmo, edge, edge_distance, erddap, latitude, longitude, management, month, oceanography, office, preliminary, ships, start, start_day, start_month, start_year, year";
    String license "https://www.bco-dmo.org/dataset/674992/license";
    String metadata_source "https://www.bco-dmo.org/api/dataset/674992";
    Float64 Northernmost_Northing -77.8539;
    String param_mapping "{'674992': {'lat_approx': 'flag - latitude', 'lon_approx': 'flag - longitude'}}";
    String parameter_source "https://www.bco-dmo.org/mapserver/dataset/674992/parameters";
    String people_0_affiliation "Moss Landing Marine Laboratories";
    String people_0_affiliation_acronym "MLML";
    String people_0_person_name "Dr Stacy Kim";
    String people_0_person_nid "51714";
    String people_0_role "Principal Investigator";
    String people_0_role_type "originator";
    String people_1_affiliation "H.T. Harvey & Associates";
    String people_1_person_name "Dr David  G. Ainley";
    String people_1_person_nid "50491";
    String people_1_role "Co-Principal Investigator";
    String people_1_role_type "originator";
    String people_2_affiliation "Point Blue Conservation Science";
    String people_2_person_name "Dr Grant Ballard";
    String people_2_person_nid "566872";
    String people_2_role "Co-Principal Investigator";
    String people_2_role_type "originator";
    String people_3_affiliation "University of South Florida";
    String people_3_affiliation_acronym "USF";
    String people_3_person_name "Kendra L. Daly";
    String people_3_person_nid "50505";
    String people_3_role "Co-Principal Investigator";
    String people_3_role_type "originator";
    String people_4_affiliation "Moss Landing Marine Laboratories";
    String people_4_affiliation_acronym "MLML";
    String people_4_person_name "Dr Stacy Kim";
    String people_4_person_nid "51714";
    String people_4_role "Contact";
    String people_4_role_type "related";
    String people_5_affiliation "Woods Hole Oceanographic Institution";
    String people_5_affiliation_acronym "WHOI BCO-DMO";
    String people_5_person_name "Amber York";
    String people_5_person_nid "643627";
    String people_5_role "BCO-DMO Data Manager";
    String people_5_role_type "related";
    String project "McMurdo Predator Prey";
    String projects_0_acronym "McMurdo Predator Prey";
    String projects_0_description 
"Extracted from the NSF award abstract:
The research project investigates the importance of top down forcing on pelagic food webs. The relatively pristine Ross Sea includes large populations of upper-level predators such as minke and killer whales, Adélie and Emperor penguins, and Antarctic toothfish. This project focuses on food web interactions of Adélie penguins, minke whales, and the fish-eating Ross Sea killer whales, all of which exert foraging pressure on their main prey, crystal krill (Euphausia cyrstallorophias) and silver fish (Pleuragramma antarcticum) in McMurdo Sound.
The investigators used a video- and acoustic-capable ROV, and standard biological and environmental sensors to quantify the abundance and distribution of phytoplankton, sea ice biota, prey, and relevant habitat data.  The sampling area included 37 stations across an 30 x 15 km section of McMurdo Sound, stratified by distance from the ice edge as a proxy for air-breathing predator access. This study will be among the first to assess top-down forcing in the Ross Sea ecosystem and will form the basis for multidisciplinary studies in the future.
Map sampling stations";
    String projects_0_end_date "2016-11";
    String projects_0_geolocation "McMurdo Sound, Antarctica";
    String projects_0_name "Food web dynamics in an intact ecosystem: the role of top predators in McMurdo Sound";
    String projects_0_project_nid "665131";
    String projects_0_project_website "https://scini-penguin.mlml.calstate.edu/pauls-wordpress-test-site/";
    String projects_0_start_date "2011-06";
    String publisher_name "Biological and Chemical Oceanographic Data Management Office (BCO-DMO)";
    String publisher_type "institution";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -77.8539;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String subsetVariables "latitude,longitude";
    String summary 
"This dataset contains dates of icebreaker start and arrival at McMurdo Station
in McMurdo Sound, Antarctica between austral years 1956/1957 and 2014/2015.
\\u00a0It also includes the distance\\u00a0between the fast ice edge and McMurdo
Station on the date of ship arrival at the fast ice edge.";
    String title "Icebreaker dates and ice edge distance in McMurdo Sound, Antarctica from austral years 1956/1957 to 2014/2015 (McMurdo Predator Prey project)";
    String version "1";
    Float64 Westernmost_Easting 166.4686;
    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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