Data Access Form

Dataset Title:	NWLON NLHC3
Institution:	NOAA NWLON (Dataset ID: NWLON_8461490)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Make a graph

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Variable

Optional
Constraint #1

Optional
Constraint #2

Minimum

or a List of Values

Maximum

Station_ID

"8461490"

Station_Name

"New London"

longitude (degrees_east)

latitude (degrees_north)

time (UTC)

2024-09-23T11:36:00Z

2024-11-24T07:36:00Z

MLLW (Mean Lower Low Water, m)

-0.211

2.023

MLLW_Standard_Deviation

0.001

2.002

Server-side Functions

distinct()

Hover here to see a list of options. Click on an option to select it.

File type: (more information)

(Documentation / Bypass this form )

(Please be patient. It may take a while to get the data.)

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  Station_ID {
    String ioos_category "Identifier";
    String long_name "Station ID";
  }
  Station_Name {
    String ioos_category "Identifier";
    String long_name "Station Name";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -72.09, -72.09;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 41.3614, 41.3614;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.72709136e+9, 1.73243376e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Time";
    String source_name "time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String time_precision "1970-01-01T00:00:00Z";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  MLLW {
    Float64 actual_range -0.211, 2.023;
    String long_name "Mean Lower Low Water";
    String units "m";
  }
  MLLW_Standard_Deviation {
    Float64 actual_range 0.001, 2.002;
    String long_name "Standard Deviation of Mean Low Low Water";
    String standard_name "stddev_water_height";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Point";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "webmaster.ndbc@noaa.gov";
    String creator_name "NOAA NWLON";
    String creator_type "institution";
    String creator_url "https://www.ndbc.noaa.gov/";
    Float64 Easternmost_Easting -72.09;
    String featureType "Point";
    Float64 geospatial_lat_max 41.3614;
    Float64 geospatial_lat_min 41.3614;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -72.09;
    Float64 geospatial_lon_min -72.09;
    String geospatial_lon_units "degrees_east";
    String history 
"2024-11-24T08:30:37Z https://api.tidesandcurrents.noaa.gov/api/prod/#products
2024-11-24T08:30:37Z http://data.neracoos.org/erddap/tabledap/NWLON_8461490.html";
    String infoUrl "https://www.ndbc.noaa.gov/";
    String institution "NOAA NWLON";
    String keywords "a_STN, air, apd, atmosphere, atmospheric, atmp, buoy, center, data, dewp, DPD, earth, Earth\\n                Science > Oceans > Ocean Waves > Significant Wave Height, Earth Science\\n                >\\n                Oceans > Ocean Waves > Swells, Earth Science > Atmosphere > Atmospheric Pressure >\\n                Pressure\\n                Tendency, Earth Science > Atmosphere > Atmospheric Winds > Surface Winds, Earth Science > Oceans > Ocean Waves >\\n                Wave Period, GST, gust, height, latitude, level, longitude, meteorology, mwd, national, ndbc, noaa, ocean, oceans, period, PRES, pressure, PTDY, science, sea, sea level, sea_surface_swell_wave_period, sea_surface_wave_significant_height, seawater, significant, speed, stn, surface, surface waves, swell, swells, temperature, tendency, tendency_of_air_pressure, test, tide, time, vis, water, wave, waves, wdir, wind, wind_speed, wind_speed_of_gust, winds, WSPD, WTMP, WVHT";
    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.";
    Float64 Northernmost_Northing 41.3614;
    String sourceUrl "https://api.tidesandcurrents.noaa.gov/api/prod/#products";
    Float64 Southernmost_Northing 41.3614;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "latitude, longitude";
    String summary "test. Data from a local source.";
    String testOutOfDate "now-3days";
    String time_coverage_end "2024-11-24T07:36:00Z";
    String time_coverage_start "2024-09-23T11:36:00Z";
    String title "NWLON NLHC3";
    Float64 Westernmost_Easting -72.09;
  }
}

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.