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ERDDAP > griddap > Make A Graph ?

Dataset Title:  ROMS Samoa Regional Ocean Model, Best Time Series [time][lat][lon], 2015-
present
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Institution:  University of Hawaii   (Dataset ID: hawaii_soest_0d61_a79a_196b)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Data Access Form
 
Graph Type:  ?
X Axis:  ?
Y Axis:  ?
Color:  ?
 
Dimensions ?    Start ?    Stop ?
time (UTC) ?     specify just 1 value →
    << -
< <
latitude (degrees_north) ?
    +
    -
< slider >
longitude (degrees_east) ?
    +
    -
< slider >
 
Graph Settings
Color Bar:   Continuity:   Scale: 
   Minimum:   Maximum:   N Sections: 
Draw land mask: 
Y Axis Minimum:   Maximum:   Ascending: 
 
(Please be patient. It may take a while to get the data.)
 
Optional:
Then set the File Type: (File Type information)
and
or view the URL:
(Documentation / Bypass this form ? )
    Click on the map to specify a new center point. ?
Zoom:
[The graph you specified. Please be patient.]

 

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:

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.429056e+9, 1.5198624e+9;
    String axis "T";
    String calendar "proleptic_gregorian";
    String ioos_category "Time";
    String long_name "Forecast time for ForecastModelRunCollection";
    Float64 missing_value NaN;
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range -15.5, -12.49855;
    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 -174.0, -168.8088;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  zeta {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 2.0;
    Float64 colorBarMinimum -2.0;
    String ioos_category "Sea Level";
    String long_name "free-surface";
    Float32 missing_value NaN;
    String standard_name "sea_surface_height";
    String units "meter";
  }
  NC_GLOBAL {
    String _CoordSysBuilder "ucar.nc2.dataset.conv.CF1Convention";
    String acknowledgement "The Pacific Islands Ocean Observing System (PacIOOS), funded through the National Oceanic and Atmospheric Administration (NOAA), is a Regional Association within the U.S. Integrated Ocean Observing System (IOOS). PacIOOS is coordinated by the University of Hawaii School of Ocean and Earth Science and Technology (SOEST).";
    String cdm_data_type "Grid";
    String comment "Model runs produced by Dr. Brian Powell (powellb@hawaii.edu).";
    String contributor_name "Dr. Brian Powell, Dr. Jim Potemra";
    String contributor_role "Principal Investigator, Data Manager";
    String Conventions "CF-1.6, ACDD-1.3, COARDS";
    String creator_email "powellb@hawaii.edu";
    String creator_institution "University of Hawaii";
    String creator_name "Dr. Brian Powell";
    String creator_type "person";
    String creator_url "http://www.soest.hawaii.edu/oceanography/faculty/powell.html";
    String date_created "2014-02-11";
    String date_issued "2014-02-11";
    String date_metadata_modified "2017-01-30";
    String date_modified "2015-05-28";
    Float64 Easternmost_Easting -168.8088;
    String geospatial_bounds "POLYGON ((-15.5 -174.0, -12.4985 -174.0, -12.4985 -168.809, -15.5 -168.809, -15.5 -174.0))";
    String geospatial_bounds_crs "EPSG:4326";
    Float64 geospatial_lat_max -12.49855;
    Float64 geospatial_lat_min -15.5;
    Float64 geospatial_lat_resolution 0.02704009009009009;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -168.8088;
    Float64 geospatial_lon_min -174.0;
    Float64 geospatial_lon_resolution 0.02806054054054059;
    String geospatial_lon_units "degrees_east";
    String history 
"New grid (04/2015) ;
FMRC Best Dataset
2018-02-23T16:27:56Z http://oos.soest.hawaii.edu/thredds/dodsC/pacioos/roms_forec/samoa/ROMS_Samoa_Regional_Ocean_Model_best.ncd
2018-02-23T16:27:56Z http://upwell.pfeg.noaa.gov/griddap/hawaii_soest_0d61_a79a_196b.das";
    String id "pacioos.roms_forec.samoa.ROMS_Samoa_Regional_Ocean_Model_best.ncd";
    String infoUrl "http://www.pacioos.hawaii.edu/currents/model-samoa/";
    String institution "University of Hawaii";
    String instrument "Not Applicable > Not Applicable";
    String instrument_vocabulary "GCMD Instrument Keywords";
    String ISO_Topic_Categories "oceans";
    String keywords "/regional, advanced, analysis, archiving, argo, array, avhrr, aviso, best, best time series, circulation, coordinate, currents, data, density, earth, Earth Science > Oceans > Ocean Circulation > Ocean Currents, Earth Science > Oceans > Ocean Temperature > Potential Temperature, Earth Science > Oceans > Salinity/Density > Salinity, Earth Science > Oceans > Sea Surface Topography > Sea Surface Height, Earth Science Services > Models > Ocean General Circulation Models (OGCM)/Regional Ocean Models, Earth Science Services > Models > Weather Research/Forecast Models, experiment, forecast, forecasting, free, free-surface, general, geostrophic, hawaii, height, high, hybrid, hycom, ice, imaging, interpretation, latitude, level, longitude, model, modeling, models, moderate, modis, ocean, oceanic, oceanography, oceans, ogcm, operational, oregon, ostia, osu, potential, radiometer, real, real time, real-time, realtime, regional, regional ocean model, research, research/forecast, resolution, roms, salinity, salinity/density, samoa, satellite, science, sea, sea level, sea_surface_height, series, services, spectroradiometer, ssh, sst, state, surface, system, temperature, time, time series, topex, topography, university, validation, very, vhrr, weather, wrf, zeta";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "These model data were generated as part of an academic research project, and the principal investigator, Brian Powell (powellb@hawaii.edu), asks to be informed of intent for scientific use and appropriate acknowledgment given in any publications arising therefrom. The data are provided free of charge, without warranty of any kind.";
    String location "Proto fmrc:ROMS_Samoa_Regional_Ocean_Model";
    String locations "Ocean > Pacific Ocean > South Pacific Ocean > Polynesia > American Samoa, Ocean > Pacific Ocean > South Pacific Ocean > Polynesia > Samoa";
    String locations_vocabulary "GCMD Location Keywords";
    String Metadata_Link "http://www.pacioos.hawaii.edu/metadata/roms_samoa_forecast.html";
    String naming_authority "org.pacioos";
    Float64 Northernmost_Northing -12.49855;
    String platform "Models/Analyses > > Operational Models";
    String platform_vocabulary "GCMD Platform Keywords";
    String program "Pacific Islands Ocean Observing System (PacIOOS)";
    String project "Pacific Islands Ocean Observing System (PacIOOS)";
    String publisher_email "info@pacioos.org";
    String publisher_institution "University of Hawaii";
    String publisher_name "Pacific Islands Ocean Observing System (PacIOOS)";
    String publisher_type "group";
    String publisher_url "http://www.pacioos.hawaii.edu";
    String references "http://www.pacioos.hawaii.edu/currents/model-samoa/, https://www.myroms.org, http://www.pacioos.hawaii.edu";
    String source "Regional Ocean Modeling System (ROMS), https://www.myroms.org";
    String sourceUrl "http://oos.soest.hawaii.edu/thredds/dodsC/pacioos/roms_forec/samoa/ROMS_Samoa_Regional_Ocean_Model_best.ncd";
    Float64 Southernmost_Northing -15.5;
    String standard_name_vocabulary "CF Standard Name Table v39";
    String summary "Regional Ocean Modeling System (ROMS): Samoa. Best time series, taking the data from the most recent run available. Regional Ocean Modeling System (ROMS) 7-day, 3-hourly forecast for the region surrounding the islands of Samoa at approximately 3-km resolution. Boundary conditions provided by the global, 1/12-degree (~9-km) HYbrid Coordinate Ocean Model (HYCOM). Atmospheric forcing generated by the Weather Research and Forecasting (Weather Research and Forecasting Model (WRF)) model for the region surrounding the islands of Samoa (WRF_Samoa) at approximately 3-km resolution. Tide forcing uses the Oregon State University (OSU) Tidal Prediction Software (OTPS) Topography Experiment (TOPEX)/Poseidon global inverse solution (TPXO) to derive barotropic tidal elevation and velocity. Data are assimilated over the previous 3 days using all available observations to improve the model estimate of current ocean state (its \"nowcast\") before forecasts are run. Assimilated observations may include satellite-based sea surface temperatures from Moderate Resolution Imaging Spectroradiometer (MODIS), Advanced Very High Resolution Radiometer (AVHRR), or Operational Sea Surface Temperature and Sea Ice Analysis (OSTIA); satellite-based sea surface height from Archiving, Validation and Interpretation of Satellite Data in Oceanography (AVISO); and in-situ water temperature and salinity profiles from Array for Real-time Geostrophic Oceanography (ARGO) floats. While considerable effort has been made to implement all model components in a thorough, correct, and accurate manner, numerous sources of error are possible. As such, please use these data with the caution appropriate for any ocean related activity.";
    String time_coverage_end "2018-03-01T00:00:00Z";
    String time_coverage_resolution "PT3H";
    String time_coverage_start "2015-04-15T00:00:00Z";
    String title "ROMS Samoa Regional Ocean Model, Best Time Series [time][lat][lon], 2015-present";
    Float64 Westernmost_Easting -174.0;
  }
}

 

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.

griddap request URLs must be in the form
https://upwell.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://upwell.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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