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| Dataset Title: | Dissolved inorganic nutrients including 5 macro nutrients: silicate, phosphate, nitrate, nitrite, and ammonium from water column bottle samples collected during annual cruise along western Antarctic Peninsula, 1991, 2019. 
|
| Institution: | National Science Foundation (Dataset ID: CruiseDissolvedInorganicNutrients) |
| Information: | Summary
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| FGDC
| ISO 19115
| Metadata
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| Subset
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|
Attributes {
s {
study_name {
String cf_role "trajectory_id";
String column_name "studyName";
String comment "Cruise name";
String ioos_category "Identifier";
String long_name "Study";
}
time {
String _CoordinateAxisType "Time";
Float64 actual_range 6.8947416e+8, 1.517742196e+9;
String axis "T";
String calendar "proleptic_gregorian";
Float64 column_id 457;
String column_name "col_457";
String ioos_category "Time";
String long_name "Time";
String lter_column_description "date and time";
String lter_column_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 {
Int16 _FillValue 32767;
Int16 actual_range -158, 901;
Float64 column_id 460;
String column_name "col_460";
String ioos_category "Unknown";
String long_name "Grid Line";
String lter_column_description "line on a pre-defined survey grid in the LTER Palmer study area";
String lter_column_name "Line";
String lter_mscale "nominal";
}
station {
Int16 _FillValue -32767;
Int16 actual_range -99, 260;
Float64 column_id 461;
String column_name "col_461";
String ioos_category "Identifier";
String long_name "Station";
String lter_column_description "Palmer LTER sampling grid station";
String lter_column_name "Station";
String lter_mscale "nominal";
}
latitude {
String _CoordinateAxisType "Lat";
Float64 _FillValue 9.969209968386869e+36;
Float64 actual_range -70.08833, -62.0672;
String axis "Y";
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
Float64 column_id 454;
String column_name "col_454";
String ioos_category "Location";
String long_name "Latitude";
String lter_column_description "latitude measured from the equator in decimal degrees, South is negative";
String lter_column_name "Latitude";
String lter_mscale "ratio";
String lter_num_type "real";
String lter_units "º";
String lter_units_string "degree";
String standard_name "latitude";
String units "degrees_north";
String units_conventions "EML-2.0.1,EML-2.1.0,EML-LTER";
}
longitude {
String _CoordinateAxisType "Lon";
Float64 _FillValue 9.969209968386869e+36;
Float64 actual_range -78.90083, -38.89873;
String axis "X";
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
Float64 column_id 455;
String column_name "col_455";
String ioos_category "Location";
String long_name "Longitude";
String lter_column_description "longitude measured from the Prime Meridian in decimal degrees, West is negative";
String lter_column_name "Longitude";
String lter_mscale "ratio";
String lter_num_type "real";
String lter_units "º";
String lter_units_string "degree";
String standard_name "longitude";
String units "degrees_east";
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 -1.49, 5000.0;
String axis "Z";
Float64 colorBarMaximum 8000.0;
Float64 colorBarMinimum -8000.0;
String colorBarPalette "TopographyDepth";
Float64 column_id 502;
String column_name "col_502";
String ioos_category "Location";
String long_name "Depth";
String lter_column_description "measurement or sample collection distance from water column surface";
String lter_column_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";
}
cast_number {
Float64 _FillValue NaN;
Float64 actual_range 1.0, 149.0;
Float64 colorBarMaximum 100.0;
Float64 colorBarMinimum 0.0;
Float64 column_id 458;
String column_name "col_458";
String ioos_category "Statistics";
String long_name "Cast Number";
String lter_column_description "reference number for ship-based over-the-side deployed and lowered instrumentation";
String lter_column_name "Cast";
String lter_mscale "interval";
String lter_num_type "natural";
String lter_units_string "number";
Float64 missing_value NaN;
String units_conventions "EML-2.0.1,EML-2.1.0,EML-LTER";
}
bottle {
Byte _FillValue -127;
String _Unsigned "false";
Byte actual_range -128, 116;
Float64 column_id 324;
String column_name "col_324";
String ioos_category "Unknown";
String long_name "Bottle";
String lter_column_description "reference number of sample bottle from rosette";
String lter_column_name "Bottle";
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";
}
event {
Int16 _FillValue 32767;
Int16 actual_range 1, 1311;
Float64 column_id 323;
String column_name "col_323";
String ioos_category "Unknown";
String long_name "Event";
String lter_column_description "sequence of cruise happenings ordered by time";
String lter_column_name "Event";
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";
}
irradiance {
Float64 _FillValue 9.969209968386869e+36;
Float64 actual_range 0.5, 100.0;
Float64 colorBarMaximum 100.0;
Float64 colorBarMinimum 0.0;
Float64 column_id 459;
String column_name "col_459";
String ioos_category "Unknown";
String long_name "Irradiance";
String lter_column_description "The ratio of two light measurements incident on horizontal surfaces at two locations.";
String lter_column_name "Irradiance";
String lter_mscale "ratio";
String lter_num_type "real";
String lter_units "%";
String lter_units_string "percent";
String units "percent";
String units_conventions "BNZ-LTER,CAP-LTER,CDR-LTER,FCE-LTER,GCE-LTER,HBR-LTER,KNZ-LTER,MCM-LTER,NTL-LTER,NWT-LTER,PAL-LTER,PIE-LTER,SGS-LTER";
}
phosphate {
Float64 _FillValue 9.969209968386869e+36;
Float64 actual_range -0.04, 72.333;
Float64 colorBarMaximum 4.0;
Float64 colorBarMinimum 0.0;
Float64 column_id 317;
String column_name "col_317";
String ioos_category "Dissolved Nutrients";
String long_name "Mole Concentration Of Phosphate In Sea Water";
String lter_column_description "phosphate";
String lter_column_name "[PO4]3-";
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_phosphate_in_sea_water";
String units "micromoles L-1";
String units_conventions "HFR-LTER,PAL-LTER,PIE-LTER";
}
dissolved_inorganic_silicate {
Float64 _FillValue 9.969209968386869e+36;
Float64 actual_range -0.1, 246.915;
Float64 colorBarMaximum 50.0;
Float64 colorBarMinimum 0.0;
Float64 column_id 318;
String column_name "col_318";
String ioos_category "Dissolved Nutrients";
String long_name "Mole Concentration Of Silicate In Sea Water";
String lter_column_description "dissolved inorganic silicate";
String lter_column_name "[SiO4]4-";
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_silicate_in_sea_water";
String units "micromoles L-1";
String units_conventions "HFR-LTER,PAL-LTER,PIE-LTER";
}
nitrite {
Float64 _FillValue 9.969209968386869e+36;
Float64 actual_range -0.1, 7.539;
Float64 colorBarMaximum 1.0;
Float64 colorBarMinimum 0.0;
Float64 column_id 319;
String column_name "col_319";
String ioos_category "Dissolved Nutrients";
String long_name "Mole Concentration Of Nitrite In Sea Water";
String lter_column_description "nitrite";
String lter_column_name "[NO2]-";
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_nitrite_in_sea_water";
String units "micromoles L-1";
String units_conventions "HFR-LTER,PAL-LTER,PIE-LTER";
}
nitrate {
Float64 _FillValue 9.969209968386869e+36;
Float64 actual_range -0.1, 46.66;
Float64 colorBarMaximum 50.0;
Float64 colorBarMinimum 0.0;
Float64 column_id 320;
String column_name "col_320";
String ioos_category "Dissolved Nutrients";
String long_name "Mole Concentration Of Nitrate In Sea Water";
String lter_column_description "nitrate";
String lter_column_name "[NO3]-";
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_nitrate_in_sea_water";
String units "micromoles L-1";
String units_conventions "HFR-LTER,PAL-LTER,PIE-LTER";
}
ammonium {
Float64 _FillValue 9.969209968386869e+36;
Float64 actual_range -1.6, 56.0;
Float64 colorBarMaximum 5.0;
Float64 colorBarMinimum 0.0;
Float64 column_id 321;
String column_name "col_321";
String ioos_category "Dissolved Nutrients";
String long_name "Mole Concentration Of Ammonium In Sea Water";
String lter_column_description "ammonium+ is an ionized form in water; NH3 is ammonia, unionized gaseous phase.";
String lter_column_name "[NH4]+";
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_ammonium_in_sea_water";
String units "micromoles L-1";
String units_conventions "HFR-LTER,PAL-LTER,PIE-LTER";
}
nitrite_and_nitrate {
Float64 _FillValue 9.969209968386869e+36;
Float64 actual_range 0.0, 47.8;
Float64 colorBarMaximum 50.0;
Float64 colorBarMinimum 0.0;
Float64 column_id 322;
String column_name "col_322";
String ioos_category "Dissolved Nutrients";
String long_name "Mole Concentration Of Nitrate In Sea Water";
String lter_column_description "nitrate and nitrite";
String lter_column_name "Nitrite and Nitrate";
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_nitrate_in_sea_water";
String units "micromoles L-1";
String units_conventions "HFR-LTER,PAL-LTER,PIE-LTER";
}
notes {
Float64 column_id 3629;
String column_name "col_3629";
String ioos_category "Unknown";
String long_name "Notes";
String lter_column_description "text field to describe a log entry (ex. event log)";
String lter_column_name "Notes";
String lter_mscale "nominal";
}
}
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 "Trajectory";
String cdm_trajectory_variables "study_name";
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,mvernet@ucsd.edu,prezelin@lifesci.ucsb.edu";
String contributor_name "Hugh Ducklow,Maria Vernet,Barbara Prezelin";
String contributor_role "PrincipalInvestigator,PrincipalInvestigator,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 "27";
String datazoo_datatable_id "27";
String datazoo_datatable_label "Dissolved Inorganic Nutrients (Cruise)";
String datazoo_datatable_name "DissolvedInorganicNutrients";
String date_created "2022-03-22T22:56:02Z";
String date_issued "2022-03-22T22:56:02Z";
String defaultDataQuery "null";
String doi "https://doi.org/10.6073/pasta/9611089f65d3cbd0801204d174eee947";
Float64 Easternmost_Easting -38.89873;
String featureType "Trajectory";
String geospatial_bounds_crs "EPSG:4326";
String geospatial_bounds_vertical_crs "EPSG:5831";
Float64 geospatial_lat_max -62.0672;
Float64 geospatial_lat_min -70.08833;
String geospatial_lat_resolution "0.00001 degree";
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max -38.89873;
Float64 geospatial_lon_min -78.90083;
String geospatial_lon_resolution "0.00001 degree";
String geospatial_lon_units "degrees_east";
Float64 geospatial_vertical_max 5000.0;
Float64 geospatial_vertical_min -1.49;
String geospatial_vertical_positive "down";
String geospatial_vertical_units "m";
String history
"/Users/kerfoot/data/lter/data/tsv/dat_27/dat_27_PD97-01.tsv
2025-05-04T13:55:03Z (local files)
2025-05-04T13:55:03Z http://pallter-data.marine.rutgers.edu/erddap/tabledap/CruiseDissolvedInorganicNutrients.html";
String infoUrl "https://pal.lternet.edu/";
String institution "National Science Foundation";
String keywords "biogeochemistry, decomposition, ecology, ecosystems, food webs, habitats, ice, Inorganic Matter, inorganic nutrients, marine, measurements, nitrate, nutrients, phytoplankton";
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 "Sampling Methods: Water samples are typically collected from all Niskin bottles on every CTD/Rosette cast performed during a cruise. Water samples are gravity-filtered through ashed GFF filters by inline filtration from the Niskin bottles, into new clean plastic 13-mL centrifuge tubes. Samples in tubes are frozen at -20C until return to the home laboratory in the USA for subsequent analysis.\\t";
String naming_authority "edu.rutgers.rucool";
Float64 Northernmost_Northing -62.0672;
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 "/Users/kerfoot/data/lter/data/tsv/dat_27/dat_27_LMG14-01.tsv";
String sourceUrl "(local files)";
Float64 Southernmost_Northing -70.08833;
String standard_name_vocabulary "CF Standard Name Table v77";
String subsetVariables "study_name, irradiance, phosphate, nitrite, nitrate";
String summary "Dissolved inorganic nutrients including 5 macro nutrients: silicate, phosphate, nitrate, nitrite, and ammonium from water column bottle samples collected during annual cruise along western Antarctic Peninsula, 1991 - 2019. The inorganic plant macronutrients dissolved phosphate, silicate, nitrate, nitrite and ammonium are the major sources of nutrition for phytoplankton growth in seawater (with sunlight and inorganic carbon). Macronutrient distributions reflect the large-scale circulation patterns in the oceans and are useful properties to delineate water masses. Dissolved inorganic nutrients samples are typically collected in every Conductivity, Temperature, Depth (CTD)/Rosette cast performed on the annual LTER cruises along the western Antarctic Peninsula. Water samples are analyzed for dissolved nutrients with recognized standard oceanographic protocols for nutrient autoanalyzers (continuous flow analyzers). In Antarctic waters, dissolved inorganic macronutrients are seldom depleted to limiting concentrations except during heavy prolonged phytoplankton blooms. This is due to the fact that phytoplankton growth is more often limited by light or iron, and to the short growing season. .The inorganic plant macronutrients dissolved phosphate, silicate, nitrate, nitrite and ammonium are the major sources of nutrition for phytoplankton growth in seawater (with sunlight and inorganic carbon). Macronutrient distributions reflect the large-scale circulation patterns in the oceans and are useful properties to delineate water masses. Dissolved inorganic nutrients samples are typically collected in every CTD/Rosette cast performed on the annual LTER cruises along the western Antarctic Peninsula. Water samples are analyzed for dissolved nutrients with recognized standard oceanographic protocols for nutrient autoanalyzers (continuous flow analyzers). In Antarctic waters, dissolved inorganic macronutrients are seldom depleted to limiting concentrations except during heavy prolonged phytoplankton blooms. This is due to the fact that phytoplankton growth is more often limited by light or iron, and to the short growing season. .The inorganic plant macronutrients dissolved phosphate, silicate, nitrate, nitrite and ammonium are the major sources of nutrition for phytoplankton growth in seawater (with sunlight and inorganic carbon). Macronutrient distributions reflect the large-scale circulation patterns in the oceans and are useful properties to delineate water masses. Dissolved inorganic nutrients samples are typically collected in every CTD/Rosette cast performed on the annual LTER cruises along the western Antarctic Peninsula. Water samples are analyzed for dissolved nutrients with recognized standard oceanographic protocols for nutrient autoanalyzers (continuous flow analyzers). In Antarctic waters, dissolved inorganic macronutrients are seldom depleted to limiting concentrations except during heavy prolonged phytoplankton blooms. This is due to the fact that phytoplankton growth is more often limited by light or iron, and to the short growing season.";
String time_coverage_end "2018-02-04T11:03:16Z";
String time_coverage_start "1991-11-07T00:36:00Z";
String title "Dissolved inorganic nutrients including 5 macro nutrients: silicate, phosphate, nitrate, nitrite, and ammonium from water column bottle samples collected during annual cruise along western Antarctic Peninsula, 1991, 2019.";
Float64 Westernmost_Easting -78.90083;
}
}
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.