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ERDDAP
Easier access to scientific data |
Brought to you by NOAA NMFS SWFSC ERD |
| Dataset Title: | Dissolved organic carbon (DOC) taken from discrete water column samples collected during annual cruise along western Antarctic Peninsula, 2003-2012. 
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| Institution: | National Science Foundation (Dataset ID: CruiseDissolvedOrganicCarbon) |
| Information: | Summary
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Attributes {
s {
study_name {
String column_name "studyName";
String comment "Cruise name";
String ioos_category "Identifier";
String long_name "Study";
}
time {
String _CoordinateAxisType "Time";
Float64 actual_range 1.04181438e+9, 1.3274496e+9;
String axis "T";
String calendar "proleptic_gregorian";
String column_name "col_883";
String comment "date and time";
String ioos_category "Time";
String long_name "Datetime GMT";
String lter_mscale "dateTime";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String units "seconds since 1970-01-01T00:00:00Z";
}
grid_line {
Float64 _FillValue 9223372036854775807;
Float64 actual_range -158, 624;
String column_name "col_884";
String comment "line on a pre-defined survey grid in the LTER Palmer study area";
String ioos_category "Unknown";
String long_name "Grid Line Intended";
String lter_mscale "nominal";
}
grid_station {
Float64 _FillValue 9223372036854775807;
Float64 actual_range -80, 260;
String column_name "col_885";
String comment "Palmer LTER grid station";
String ioos_category "Unknown";
String long_name "Grid Station Intended";
String lter_mscale "nominal";
}
station {
String column_name "col_886";
String comment "Palmer LTER grid station";
String ioos_category "Identifier";
String long_name "Station Name";
String lter_mscale "nominal";
}
bottle {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 23;
Float64 colorBarMaximum 100.0;
Float64 colorBarMinimum 0.0;
String column_name "col_887";
String comment "reference number of sample bottle from rosette. FillValue denotes underway/intake.";
String ioos_category "Statistics";
String long_name "Bottle Number";
String lter_mscale "interval";
String lter_num_type "natural";
String lter_units_string "number";
String units_conventions "EML-2.0.1,EML-2.1.0,EML-LTER";
}
depth {
String _CoordinateAxisType "Height";
String _CoordinateZisPositive "down";
Float64 _FillValue 9.969209968386869e+36;
Float64 actual_range 0.0, 3700.0;
String axis "Z";
Float64 colorBarMaximum 4000.0;
Float64 colorBarMinimum 0.0;
String colorBarPalette "TopographyDepth";
String column_name "col_888";
String comment "measurement or sample collection distance from water column surface";
String ioos_category "Location";
String long_name "Depth";
String lter_mscale "ratio";
String lter_num_type "real";
String lter_units "m";
String lter_units_string "meter";
String positive "down";
String standard_name "depth";
String units "m";
String units_conventions "AND-LTER,BNZ-LTER,CDR-LTER,EML-2.0.1,EML-2.1.0,EML-LTER,LUQ-LTER,SGS-LTER";
}
dissolved_organic_carbon {
Float64 _FillValue 9.969209968386869e+36;
Float64 actual_range -4.1, 441.16;
Float64 colorBarMaximum 450.0;
Float64 colorBarMinimum 0.0;
String column_name "col_889";
String comment "a non-metallic element in the Periodic Table with Atomic Number 6, Atomic Weight 12.0107";
String ioos_category "Ocean Color";
String long_name "DOC";
String lter_mscale "ratio";
String lter_num_type "real";
String lter_units "µmol/L";
String lter_units_string "micromolePerLiter";
String standard_name "mole_concentration_of_dissolved_organic_carbon_in_sea_water";
String units "micromoles L-1";
String units_conventions "HFR-LTER,PAL-LTER,PIE-LTER";
}
event {
Int16 _FillValue 32767;
Int16 actual_range 6, 787;
Float64 colorBarMaximum 100.0;
Float64 colorBarMinimum 0.0;
String column_name "col_2262";
String comment "sequence of cruise happenings ordered by time";
String ioos_category "Statistics";
String long_name "Event Number";
String lter_mscale "interval";
String lter_num_type "real";
String lter_units_string "number";
String units_conventions "EML-2.0.1,EML-2.1.0,EML-LTER";
}
notes {
Float64 _FillValue NaN;
String column_name "col_4049";
String comment "text field to describe a log entry (ex. event log)";
String ioos_category "Unknown";
String long_name "Notes";
String lter_mscale "nominal";
Float64 missing_value NaN;
}
}
NC_GLOBAL {
String _NCProperties "version=1|netcdflibversion=4.6.1|hdf5libversion=1.10.6";
String acknowledgement "Funding and support provided by the National Science Foundation";
String cdm_data_type "Other";
String comment "The Palmer, Antarctica, Long-Term Ecological Research project is a member site of the Long-Term Ecological Research program, a network of sites investigating diverse biomes. A team of researchers seeks to understand the structure and function of the Western Antarctic Peninsula's marine and terrestrial ecosystems in the context of seasonal-to-interannual atmospheric and sea ice dynamics, as well as long-term climate change. The PAL measurement system (or grid) is designed to study marine and terrestrial food webs consisting principally of diatom primary producers, the dominant herbivore Antarctic krill, and the apex predator Adelie penguin. An attenuated microbial food web is also a focus. PAL studies these ecosystems annually over a regional scale grid of oceanographic stations and seasonally at Palmer Station. \\n\\nPalmer Station is located on Anvers Island west of the Antarctic Peninula. The peninsula runs perpendicular to a strong climatic gradient between the cold, dry continental regime to the south, characteristic of the Antarctic interior, and the warm, moist, maritime regime to the north. North-south shifts in the gradient give rise to large environmental variability to climate change. Sea ice extent and variability affects ecosystem changes at all trophic levels. In addition to the long-term field and research activities, information management, graduate student training, education and outreach are an integral part of the program.";
String contributor_email "hducklow@ldeo.columbia.edu";
String contributor_name "Hugh Ducklow";
String contributor_role "PrincipalInvestigator";
String contributor_role_vocabulary "https://vocab.nerc.ac.uk/collection/G04/current/";
String Conventions "CF-1.8, ACDD-1.3, COARDS";
String creator_country "USA";
String creator_email "kerfoot@marine.rutgers.edu";
String creator_institution "Rutgers University";
String creator_name "John Kerfoot";
String creator_sector "academic";
String creator_type "person";
String creator_url "https://rucool.marine.rutgers.edu";
String datazoo_dataset_id "69";
String datazoo_datatable_id "69";
String datazoo_datatable_label "Dissolved Organic Carbon (Cruise)";
String datazoo_datatable_name "DissolvedOrganicCarbon";
String date_created "2021-05-07T22:14:30Z";
String date_issued "2021-05-07T22:14:30Z";
String defaultDataQuery "null";
String defaultGraphQuery "time,depth,dissolved_inorganic_carbon1&.draw=markers&.marker=4%7C5&.color=0x000000&.colorBar=%7C%7C%7C0%7C3000%7C&.bgColor=0xffccccff&.yRange=%7C%7Cfalse%7C";
String doi "https://doi.org/10.6073/pasta/891bb60f7c6d74e3491ebbc6a57bf4c6";
String geospatial_bounds_crs "EPSG:4326";
String geospatial_bounds_vertical_crs "EPSG:5831";
String geospatial_lat_resolution "0.00001 degree";
String geospatial_lat_units "degree_north";
String geospatial_lon_resolution "0.00001 degree";
String geospatial_lon_units "degree_east";
Float64 geospatial_vertical_max 3700.0;
Float64 geospatial_vertical_min 0.0;
String geospatial_vertical_positive "down";
String geospatial_vertical_units "m";
String history
"local files
2025-05-04T16:13:41Z (local files)
2025-05-04T16:13:41Z http://pallter-data.marine.rutgers.edu/erddap/tabledap/CruiseDissolvedOrganicCarbon.html";
String infoUrl "https://pal.lternet.edu/";
String institution "National Science Foundation";
String keywords "carbon, habitats, marine, measurements, Organic Matter, organic matter";
String keywords_vocabulary "LTER Core Areas,LTER Controlled Vocabulary";
String license "All data contained herein is licensed under the LTER Network Data Access Policy (https://lternet.edu/data-access-policy/). In accordance with scientific publishing conventions and professional etiquette, the consumer of these data (the \"Data User\") is expected to appropriately cite these data in any publication that results from their use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur and should realize that misinterpretation of data may occur if used out of context of the original study. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the data authors. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available \"as is.\" The Data User should be aware that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data.";
String license_link "https://lternet.edu/data-access-policy/";
String methods "General Methods: Samples for determination of DOC concentration are harvested from the CTD rosette by gentle in-line gravity filtration through precombusted GFF filters and frozen at -20C until analysis in the home laboratory. Samples are analyzed using a Shimadzu TOC-V Total Organic Carbon Analyzer following standard JGOFS Protocols. \\n\\n<em>References</em>\\nDucklow HW, Dickson ML, Kirchman DL, Steward G, Orchardo J, Marra J, Azam F (2000) Constraining bacterial production, conversion efficiency and respiration in the Ross Sea, Antarctica, January-February, 1997. Deep-Sea Research II 47:3227-3247\\n\\nGasol JM, del Giorgio PA (2000) Using flow cytrometry for counting natural planktonic bacteria and understanding the structure of planktonic bacterial communities. Scientia Marina 64:197-224.\\n\\nKnap A, Michaels AF, Close A, Ducklow HW, Dickson A (1994) Protocols for the Joint Global Ocean Flux Study (JGOFS) Core Measurements. Report No. 29, UNESCO, Paris \\n \\nSmith DC, Azam F (1992) A simple, economical method for measuring bacterial protein synthesis rates in seawater using 3H-leucine. Marine Microbial Foodwebs 6:107-114.\\n";
String naming_authority "edu.rutgers.rucool";
String product_version "1.0";
String program "LTER";
String project "Palmer LTER";
String publisher_country "USA";
String publisher_email "kerfoot@marine.rutgers.edu";
String publisher_institution "Rutgers University";
String publisher_name "John Kerfoot";
String publisher_type "person";
String publisher_url "https://rucool.marine.rutgers.edu";
String references "https://pal.lternet.edu/";
String sea_name "Southern Ocean";
String source "local files";
String sourceUrl "(local files)";
String standard_name_vocabulary "CF Standard Name Table v77";
String subsetVariables "study_name,grid_line,grid_station,station";
String summary "Dissolved organic carbon (Department of Commerce (DOC)) is a poorly-characterized but large and dynamic pool of actively-cycling carbon in the oceans, and one of the largest organic carbon pools on the planet. The total DOC pool consists of three major fractions: refractory DOC resistant to microbial oxidation with a turnover time of millennia; semi-labile DOC, produced and decomposed on seasonal timescales, and labile DOC, consisting of simple, recently-produced compounds with nanomolar concentrations, and turnover times of minutes-days. The background concentration of refractory DOC in the deep ocean is 35-45 micromolar. DOC concentration in the upper 100-200 meters is enhanced by 10-50 micromolar with the addition of semilabile DOC. In subtropical and temperate oceans, semilabile DOC can form an important part of the carbon export by deep vertical mixing into the oceanic mid-depths. Concentrations of semilabile DOC are lower in the polar Southern Ocean than in most other regions.";
String time_coverage_end "2012-01-25T00:00:00Z";
String time_coverage_start "2003-01-06T00:53:00Z";
String title "Dissolved organic carbon (DOC) taken from discrete water column samples collected during annual cruise along western Antarctic Peninsula, 2003-2012.";
}
}
Data Access Protocol (DAP) and its
selection constraints.
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.