Data Access Form

Dataset Title:	Saildrone SD1021 ADCP
Institution:	NOAA/PMEL (Dataset ID: sd1021_adcp_arctic_2018)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Make a graph

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Variable	Minimum	Maximum
depth (depth of each measurement, m)	6.0	104.0

time (UTC)	2018-06-30T19:59:58Z	2018-10-06T23:29:58Z

U (uadcp, cm s-1)	-84.900286421769	104.609306762946
V (vadcp, cm s-1)	-156.793553049975	121.400001525879
longitude (degrees_east)	-169.113803204734	-158.383245380436

latitude (degrees_north)	53.8444061111659	72.9961165656452

Server-side Functions

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float64 actual_range 6.0, 104.0;
    String axis "Z";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String ioos_category "Location";
    String long_name "depth of each measurement";
    String point_spacing "even";
    String positive "down";
    String source_name "DEPTH_ADCP";
    String standard_name "depth";
    String units "m";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.530388798e+9, 1.538868598e+9;
    String axis "T";
    String calendar "GREGORIAN";
    String ioos_category "Time";
    String long_name "Time";
    String point_spacing "even";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  U {
    Float64 _FillValue -1.0e+34;
    Float64 actual_range -84.900286421769, 104.609306762946;
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    String history "From sd1021adcp";
    String long_name "uadcp";
    Float64 missing_value -1.0e+34;
    String standard_name "eastward_sea_water_velocity";
    String units "cm s-1";
  }
  V {
    Float64 _FillValue -1.0e+34;
    Float64 actual_range -156.793553049975, 121.400001525879;
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    String history "From sd1021adcp";
    String long_name "vadcp";
    Float64 missing_value -1.0e+34;
    String standard_name "northward_sea_water_velocity";
    String units "cm s-1";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 _FillValue -1.0e+34;
    Float64 actual_range -169.113803204734, -158.383245380436;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String history "From sd1021adcp";
    String ioos_category "Location";
    String long_name "Longitude";
    Float64 missing_value -1.0e+34;
    String standard_name "longitude";
    String units "degrees_east";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue -1.0e+34;
    Float64 actual_range 53.8444061111659, 72.9961165656452;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String history "From sd1021adcp";
    String ioos_category "Location";
    String long_name "Latitude";
    Float64 missing_value -1.0e+34;
    String standard_name "latitude";
    String units "degrees_north";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Point";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String drone_id "1021";
    Float64 Easternmost_Easting -158.383245380436;
    String featureType "Point";
    Float64 geospatial_lat_max 72.9961165656452;
    Float64 geospatial_lat_min 53.8444061111659;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -158.383245380436;
    Float64 geospatial_lon_min -169.113803204734;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 104.0;
    Float64 geospatial_vertical_min 6.0;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"Saildrone
2024-05-02T17:50:52Z (local files)
2024-05-02T17:50:52Z https://data.pmel.noaa.gov/pmel/erddap/tabledap/sd1021_adcp_arctic_2018.html";
    String infoUrl "www.pmel.noaa.gov";
    String institution "NOAA/PMEL";
    String keywords "acoustic, adcp, circulation, current, currents, data, depth, doppler, earth, Earth Science > Oceans > Ocean Circulation > Ocean Currents, eastward, eastward_sea_water_velocity, environmental, laboratory, latitude, longitude, marine, noaa, northward, northward_sea_water_velocity, ocean, oceans, pacific, pmel, profiler, saildrone, science, sd1021, sea, seawater, time, uadcp, vadcp, velocity, water";
    String keywords_vocabulary "GCMD Science Keywords";
    String license 
"Data Licenses / Data Usage Restrictions
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.

Unless otherwise noted, data served through this ERDDAP server are 
not quality controlled.  Users may need to do quality control when using 
these data. These data are made available at the users own risk.";
    Float64 Northernmost_Northing 72.9961165656452;
    String platform "Saildrone";
    String principal_investigator "Dr. Jessica Cross; Dr. Dongxiao Zhang";
    String principal_investigator_email "jessica.cross@noaa.gov; dongxiao.zhang@noaa.gov";
    String principal_investigator_institution "NOAA PMEL and CICOES/University of Washington";
    String project "arctic_2018";
    String QC_indicator "Level 1";
    String qc_manual "QC Performed: motion corrected";
    String source "Saildrone";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 53.8444061111659;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "Acoustic Doppler Current Profiler (ADCP) currents measured by SD1021 during the Pacific Marine Environmental Laboratory (PMEL) Arctic 2018 Saildrone Mission";
    String time_coverage_end "2018-10-06T23:29:58Z";
    String time_coverage_start "2018-06-30T19:59:58Z";
    String title "Saildrone SD1021 ADCP";
    Float64 Westernmost_Easting -169.113803204734;
  }
}

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.