Data Access Form

Dataset Title:	Observations for WATL Assimilation
Institution:	Rutgers University, Department of Marine and Coastal Sciences (Dataset ID: CMEMS_CORA_DATA_WATL)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Make a graph

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Variable	Minimum	Maximum
depth (m)	-9999.0	0.45

latitude (degrees_north)	5.0	51.99913

longitude (degrees_east)	-99.992	-38.0

time (UTC)	2019-01-01T00:00:00Z	2019-12-31T23:58:33Z

provenance	792.0	799.0
qcflag (quality control flag)	1.0	4.0
type (unity)	6.0	7.0
value (magnitude in terms of state variable type)	-2.5	1.50031104E8

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float32 actual_range -9999.0, 0.45;
    String axis "Z";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 5.0, 51.99913;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -99.992, -38.0;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.5463008e+9, 1.5778367136e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Time";
    String source_name "obs_time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  provenance {
    Float32 actual_range 792.0, 799.0;
    String history 
"CMEMS XBT/XCTD:791,
CMEMS CTD:792,
CMEMS Thermosalinigraph:793,
CMEMS Profiling float:794,
CMEMS Moorings (CMEMS):795,
CMEMS Gliders:796,
CMEMS Marine mammals:797,
CMEMS Drifting buoys:798,
CMEMS Unknown:799,
";
    String ioos_category "Unknown";
    String long_name "Provenance";
  }
  qcflag {
    Float32 actual_range 1.0, 4.0;
    String comment "1:Good data, 2: Probably good data, 3: Bad data,potetially correctable, 4: Bad data";
    String ioos_category "Quality";
    String long_name "quality control flag";
  }
  type {
    Float32 actual_range 6.0, 7.0;
    String ioos_category "Location";
    String long_name "model state variable associated with observation";
    String option_01 "free-surface";
    String option_02 "vertically integrated u-momentum component";
    String option_03 "vertically integrated v-momentum component";
    String option_04 "u-momentum component";
    String option_05 "v-momentum component";
    String option_06 "potential temperature";
    String option_07 "salinity";
    String units "unity";
  }
  value {
    Float32 actual_range -2.5, 1.50031104e+8;
    String ioos_category "Statistics";
    String long_name "observation value";
    String units "magnitude in terms of state variable type";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Point";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    Float64 Easternmost_Easting -38.0;
    String featureType "Point";
    Float64 geospatial_lat_max 51.99913;
    Float64 geospatial_lat_min 5.0;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -38.0;
    Float64 geospatial_lon_min -99.992;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 0.45;
    Float64 geospatial_vertical_min -9999.0;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"Created by Eli Hunter (hunter@marine.rutgers.edu),05-Jan-2021 11:31:25
2024-11-28T00:55:49Z (local files)
2024-11-28T00:55:49Z https://tds.marine.rutgers.edu/erddap/tabledap/CMEMS_CORA_DATA_WATL.html";
    String infoUrl "marine.rutgers.edu";
    String institution "Rutgers University, Department of Marine and Coastal Sciences";
    String keywords "associated, control, data, depth, flag, latitude, local, longitude, model, observation, provenance, qcflag, quality, source, state, statistics, time, time2, type, value, variable, with";
    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 NCO "netCDF Operators version 4.7.7 (Homepage = http://nco.sf.net, Code = https://github.com/nco/nco)";
    Float64 Northernmost_Northing 51.99913;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 5.0;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String state_units "Free-surface (m), 2D momentum (m/s), 3D momentum (m/s), potential temperature (Celsius), salinity (PSU)";
    String summary "CMEMS CORA data set dowloaded from Copernicus for WATL domain.";
    String time_coverage_end "2019-12-31T23:58:33Z";
    String time_coverage_start "2019-01-01T00:00:00Z";
    String title "Observations for WATL Assimilation";
    String Type "CMEMS Observation File:WATL domain";
    Float64 Westernmost_Easting -99.992;
  }
}

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.

(easy) You can get data by using the dataset's Data Access Form or Subset form. They make the URL for you.
(easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
(not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.

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.