Data Access Form

Dataset Title:	Upwelling Index, 21N 107W, 6-hourly
Institution:	NOAA/SWFSC Environmental Research Division (Dataset ID: erdUI216hr)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Files \| Make a graph

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Variable	Minimum	Maximum
time (reference time, UTC)	1967-01-01T00:00:00Z	2024-10-31T18:00:00Z

upwelling_index	-35916.32	549363.3
station_id
latitude (degrees_north)	21.0	21.0

longitude (degrees_east)	-107.0	-107.0

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range -9.46944e+7, 1.7303976e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "reference time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  upwelling_index {
    Float32 _FillValue -1.0e+34;
    Float32 actual_range -35916.32, 549363.3;
    String history "From transport";
    String ioos_category "Wind";
    String long_name "Upwelling Index";
    String long_name_mod "X=107W@ITP, Y=21N@ITP";
    Float32 missing_value -1.0e+34;
  }
  station_id {
    String cf_role "timeseries_id";
    String ioos_category "Other";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 21.0, 21.0;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -107.0, -107.0;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "latitude,longitude,station_id";
    String Conventions "CF-1.6, ACDD-1.3, COARDS, NCCSV-1.2";
    String defaultGraphQuery "time,upwelling_index&time>=now-5years&time<=now&.draw=lines";
    Float64 Easternmost_Easting -107.0;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 21.0;
    Float64 geospatial_lat_min 21.0;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -107.0;
    Float64 geospatial_lon_min -107.0;
    String geospatial_lon_units "degrees_east";
    String history 
"FERRET V6.72    4-Nov-24
2024-11-21T11:38:28Z (local files)
2024-11-21T11:38:28Z https://coastwatch.pfeg.noaa.gov/erddap/tabledap/erdUI216hr.html";
    String infoUrl "https://oceanview.pfeg.noaa.gov/products/upwelling/intro";
    String institution "NOAA/SWFSC Environmental Research Division";
    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.";
    Float64 Northernmost_Northing 21.0;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 21.0;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String start_time "1946-01-15T00:00:00";
    String summary "Upwelling index computed from 1-degree FNMOC sea level pressure for 15 locations off the North American West Coast at each 3 degrees of latitude from 21N to 60N. The coastal Upwelling Index is an index of the strength of the wind forcing on the ocean which has been used in many studies of the effects of ocean variability on the reproductive and recruitment success of many fish and invertebrate species.";
    String time_coverage_end "2024-10-31T18:00:00Z";
    String time_coverage_start "1967-01-01T00:00:00Z";
    String title "Upwelling Index, 21N 107W, 6-hourly";
    Float64 Westernmost_Easting -107.0;
  }
}

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.