Northwest Environmental Moorings ERDDAP
Access To Puget Sound Mooring Data

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Dataset Title:	ORCA2 - Hoodsport: ADCP Currents Data
Institution:	Northwest Environmental Moorings Group at University of Washington - Applied Physical Laboratory (Dataset ID: orca2_adcp)
Information:	Summary \| License \| Metadata \| Background \| Data Access Form \| Files

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Things You Can Do With Your Graphs

Well, you can do anything you want with your graphs, of course. But some things you might not have considered are:

Web page authors can embed a graph of the latest data in a web page using HTML <img> tags.
Anyone can use ERDDAPs Slide Sorter to build a personal web page that displays graphs with the latest data (or other images or HTML content), each in its own, draggable slide.

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.737140768055e+9, 1.741758947038e+9;
    String axis "T";
    String calendar "gregorian";
    String description "time of sampling";
    String ioos_category "Time";
    String long_name "Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float64 actual_range 0.0, 128.0;
    String axis "Z";
    String description "depth below water surface";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String positive_direction "down";
    String standard_name "depth";
    String units "m";
  }
  correlation_beam1 {
    String description "correlation magnitude for beam 1; 255 = perfect correlation";
    String ioos_category "Unknown";
    String long_name "Correlation Beam1";
    Int32 missing_value -32768;
    String range "0-255";
    String units "--";
  }
  correlation_beam2 {
    String description "correlation magnitude for beam 2; 255 = perfect correlation";
    String ioos_category "Unknown";
    String long_name "Correlation Beam2";
    Int32 missing_value -32768;
    String units "--";
  }
  correlation_beam3 {
    String description "correlation magnitude for beam 3; 255 = perfect correlation";
    String ioos_category "Unknown";
    String long_name "Correlation Beam3";
    Int32 missing_value -32768;
    String units "--";
  }
  correlation_beam4 {
    String description "correlation magnitude for beam 4; 255 = perfect correlation";
    String ioos_category "Unknown";
    String long_name "Correlation Beam4";
    Int32 missing_value -32768;
    String units "--";
  }
  echo_intensity_beam1 {
    String description "echo intensity for beam 1, at about 0.45 db per count";
    String ioos_category "Unknown";
    String long_name "Echo Intensity Beam1";
    Int32 missing_value -32768;
    String units "--";
  }
  echo_intensity_beam2 {
    String description "echo intensity for beam 2, at about 0.45 db per count";
    String ioos_category "Unknown";
    String long_name "Echo Intensity Beam2";
    Int32 missing_value -32768;
    String units "--";
  }
  echo_intensity_beam3 {
    String description "echo intensity for beam 3, at about 0.45 db per count";
    String ioos_category "Unknown";
    String long_name "Echo Intensity Beam3";
    Int32 missing_value -32768;
    String units "--";
  }
  echo_intensity_beam4 {
    String description "echo intensity for beam 4, at about 0.45 db per count";
    String ioos_category "Unknown";
    String long_name "Echo Intensity Beam4";
    Int32 missing_value -32768;
    String units "db-";
  }
  eastward_sea_water_velocity {
    Float64 colorBarMaximum 0.25;
    Float64 colorBarMinimum -0.25;
    String description "velocity of sea water in the eastward direction (westward is negative)";
    String ioos_category "Currents";
    String long_name "Eastward Sea Water Velocity";
    Float64 missing_value -32768.0;
    String standard_name "eastward_sea_water_velocity";
    String units "m/s";
  }
  northward_sea_water_velocity {
    Float64 colorBarMaximum 0.25;
    Float64 colorBarMinimum -0.25;
    String description "velocity of sea water in the northward direction (southward is negative)";
    String ioos_category "Currents";
    String long_name "Northward Sea Water Velocity";
    Float64 missing_value -32768.0;
    String standard_name "northward_sea_water_velocity";
    String units "m/s";
  }
  upward_sea_water_velocity {
    Float64 colorBarMaximum 0.05;
    Float64 colorBarMinimum -0.05;
    String description "velocity of sea water in the upward direction; i.e., towards the surface (downward is negative)";
    String ioos_category "Currents";
    String long_name "Upward Sea Water Velocity";
    Float64 missing_value -32768.0;
    String standard_name "upward_sea_water_velocity";
    String units "m/s";
  }
  upward_sea_water_velocity_error {
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String description "error velocity of sea water in the upward direction; i.e., towards the surface (downward is negative)";
    String ioos_category "Statistics";
    String long_name "Upward Sea Water Velocity Error";
    Float64 missing_value -32768.0;
    String units "m/s";
  }
  NC_GLOBAL {
    Int32 _FillValue -32768;
    String author "Seth Travis";
    String bandwidth "broad";
    Float64 beam_angle 3;
    String beam_direction "downfacing";
    String beam_pattern "convex";
    String buoy_designation "ORCA2";
    String buoy_latitude "47.42181666 degrees N";
    String buoy_longitude "-123.11258333 degrees E";
    String buoy_name "Hoodsport";
    String buoy_reference_number "2";
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "latitude,longitude";
    String citation "University of Washington NWEM Mooring Data, 2005-2025; https://nwem.apl.washington.edu/, enabled by the Northwest Association of Networked Ocean Observing Systems (NANOOS, https://www.nanoos.org) and the Washington State Ocean Acidification Center (WOAC, https://oceanacidification.uw.edu/)";
    String contact "setht1@uw.edu";
    String contributor_email "setht1@uw.edu, mickett@uw.edu, manalang@uw.edu";
    String contributor_name "Seth Travis, John Mickett, Dana Manalang";
    String contributor_role "author, principalInvestigator, principalInvestigator";
    String contributor_role_vocabulary "https://vocab.nerc.ac.uk/collection/G04/current/";
    String contributor_url "https://nwem.apl.washington.edu/, https//www.nanoos.org/, https://nwem.apl.washington.edu/";
    String Conventions "CF-1.10, ACDD-1.3, IOOS-1.2, COARDS";
    String coordinate_transformation "earth";
    String create_state "WA";
    String creator_address "Henderson Hall, 1013 NE 40th Street, Seattle, WA 98105";
    String creator_city "Seattle";
    String creator_country "USA";
    String creator_email "setht1 at uw.edu";
    String creator_institution "Applied Physics Lab - University of Washington (APL-UW)";
    String creator_name "Seth Travis";
    String creator_postalcode "98105";
    String creator_sector "academic";
    String creator_type "person";
    String creator_url "https://nwem.apl.washington.edu/";
    String defaultDataQuery "eastward_sea_water_velocity[last-192:last][0:last],northward_sea_water_velocity[last-192:last][0:last],upward_sea_water_velocity[last-192:last][0:last];";
    String defaultGraphQuery "eastward_sea_water_velocity[last-192:last][0:last]&amp;.draw=surface&amp;.vars=time|depth|eastward_sea_water_velocity&amp;.yRange=0|120|false";
    String description "Acoustic Doppler Current Profiler (ADCP) data at on the ORCA2 buoy at Hoodsport";
    Int32 estimated_salinity 30;
    String featureType "TimeSeries";
    String frequency "300kHz";
    String geospation_vertical_positive "down";
    String gts_ingest "false";
    Int32 heading_bias 0;
    String history 
"2025-03-12T06:27:39Z (local files)
2025-03-12T06:27:39Z http://nwem.apl.washington.edu/griddap/orca2_adcp.das";
    String infoUrl "https://nwem.apl.washington.edu/";
    String institution "Northwest Environmental Moorings Group at University of Washington - Applied Physical Laboratory";
    String keywords "acoustic, adcp, applied, beam1, beam2, beam3, beam4, circulation, correlation, correlation_beam1, correlation_beam2, correlation_beam3, correlation_beam4, current, currents, data, depth, doppler, earth, Earth Science > Oceans > Ocean Circulation > Ocean Currents, eastward, eastward_sea_water_velocity, echo, echo_intensity_beam1, echo_intensity_beam2, echo_intensity_beam3, echo_intensity_beam4, environmental, error, group, hoodsport, intensity, laboratory, moorings, northward, northward_sea_water_velocity, northwest, ocean, oceans, orca2, physical, profiler, science, sea, seawater, statistics, time, university, upward, upward_sea_water_velocity, upward_sea_water_velocity_error, velocity, washington, water";
    String keywords_vocabulary "GCMD Science Keywords";
    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.";
    Int32 low_correlation_threshold 64;
    Int32 min_percent_good 0;
    String publisher_address "Henderson Hall, 616 NE Northlake Place, Seattle, WA 98105";
    String publisher_city "Seattle";
    String publisher_country "USA";
    String publisher_email "setht1 at uw.edu";
    String publisher_institution "Applied Physics Lab - University of Washington (APL-UW)";
    String publisher_name "Seth Travis";
    String publisher_postalcode "98105";
    String publisher_sector "academic";
    String publisher_state "WA";
    String publisher_type "person";
    String publisher_url "https://nwem.apl.washington.edu/";
    String references "UNESCO 1983 - Algorithms for computation of fundamental properties of seawater; https://unesdoc.unesco.org/ark:/48223/pf0000059832_eng";
    String ror "https://ror.org/01a258x16";
    Float64 serial_number 419431424;
    String sourceUrl "(local files)";
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "ORCA2 - Hoodsport: ADCP Data. Acoustic Doppler Current Profiler (ADCP) data at on the ORCA2 buoy at Hoodsport";
    String testOutOfDate "now-1day";
    String time_coverage_end "2025-03-12T05:55:47Z";
    String time_coverage_start "2025-01-17T19:06:08Z";
    String title "ORCA2 - Hoodsport: ADCP Currents Data";
    Float64 transmit_pulse_length 4.29;
    Int32 velocity_error_threshold 2000;
    String water_depth "120 meters";
    String wmo_platform_code "46124";
  }
}

Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request a data subset, graph, or map from a gridded dataset (for example, sea surface temperature data from a satellite), via a specially formed URL. griddap uses the OPeNDAP (external link)

Data Access Protocol (DAP) (external link)

and its projection 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. It makes 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.

griddap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/griddap/jplMURSST41.htmlTable?analysed_sst[(2002-06-01T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a data variable name (e.g., analysed_sst), followed by [(start):stride:(stop)] (or a shorter variation of that) for each of the variable's dimensions (for example, [time][latitude][longitude]).

For details, see the griddap Documentation.

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