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Dataset Title:  SODA 3.3.1 Ocean State, 1/2°, Global, 1980-2015, Monthly Composite Subscribe RSS
Institution:  University of Maryland   (Dataset ID: erdSoda331oceanmday)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (UTC) ?      432    30 days 10h 28m 7s (uneven)
  < slider >
 depth (m) ?      50    109.9998 (uneven)
  < slider >
 latitude (degrees_north) ?      330    0.5 (even)
  < slider >
 longitude (degrees_east) ?      720    0.5 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables)
 temp (Potential temperature, degrees C) ?
 salt (Practical Salinity, PSU) ?
 wt (dia-surface velocity T-points, m/sec) ?
 prho (potential density referenced to 0 dbar, kg/m^3) ?
 u (i-current, m/sec) ?
 v (j-current, m/sec) ?

File type: (more info)

(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 {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 3.168288e+8, 1.450224e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Time";
    String long_nime "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";
    Float32 actual_range 5.03355, 5395.023;
    String axis "Z";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range -74.75, 89.75;
    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 0.25, 359.75;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    Float32 modulo 360.0;
    String standard_name "longitude";
    String units "degrees_east";
  }
  temp {
    String cell_methods "time: mean";
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Temperature";
    String long_name "Potential temperature";
    Float32 missing_value NaN;
    String standard_name "sea_water_potential_temperature";
    String units "degrees C";
    Float32 valid_range -10.0, 500.0;
  }
  salt {
    String cell_methods "time: mean";
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String ioos_category "Salinity";
    String long_name "Practical Salinity";
    Float32 missing_value NaN;
    String standard_name "sea_water_practical_salinity";
    String units "PSU";
    Float32 valid_range -10.0, 100.0;
  }
  wt {
    String cell_methods "time: mean";
    Float64 colorBarMaximum 150000.0;
    Float64 colorBarMinimum -150000.0;
    String ioos_category "Currents";
    String long_name "dia-surface velocity T-points";
    Float32 missing_value NaN;
    String units "m/sec";
    Float32 valid_range -100000.0, 100000.0;
  }
  prho {
    String cell_methods "time: mean";
    Float64 colorBarMaximum 28.0;
    Float64 colorBarMinimum 20.0;
    String ioos_category "Physical Oceanography";
    String long_name "potential density referenced to 0 dbar";
    Float32 missing_value NaN;
    String standard_name "sea_water_potential_density";
    String units "kg/m^3";
    Float32 valid_range -10.0, 100000.0;
  }
  u {
    String cell_methods "time: mean";
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    String ioos_category "Currents";
    String long_name "i-current";
    Float32 missing_value NaN;
    String standard_name "sea_water_x_velocity";
    String units "m/sec";
    Float32 valid_range -10.0, 10.0;
  }
  v {
    String cell_methods "time: mean";
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    String ioos_category "Currents";
    String long_name "j-current";
    Float32 missing_value NaN;
    String standard_name "sea_water_y_velocity";
    String units "m/sec";
    Float32 valid_range -10.0, 10.0;
  }
  NC_GLOBAL {
    String _CoordSysBuilder "ucar.nc2.dataset.conv.DefaultConvention";
    String acknowledgement "The SODA3 project is funded by the US National Science Foundation. Please cite: Carton, Chepurin, and Chen (2017)";
    String cdm_data_type "Grid";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String Created_by "Gennady Chepurin and Ligang Chen";
    String creation_date "October, 2016";
    String creator_email "carton@atmos.umd.edu";
    String creator_name "James A. Carton";
    String creator_type "person";
    String creator_url "https://www.atmos.umd.edu/~ocean/";
    String defaultGraphQuery "temp[last][0][0:last][0:last]&.draw=surface&.vars=longitude|latitude|temp";
    Float64 Easternmost_Easting 359.75;
    Float64 geospatial_lat_max 89.75;
    Float64 geospatial_lat_min -74.75;
    Float64 geospatial_lat_resolution 0.5;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 359.75;
    Float64 geospatial_lon_min 0.25;
    Float64 geospatial_lon_resolution 0.5;
    String geospatial_lon_units "degrees_east";
    String history 
"2018-10-22T02:04:53Z (local files)
2018-10-22T02:04:53Z http://coastwatch.pfeg.noaa.gov/erddap/griddap/erdSoda331oceanmday.das";
    String infoUrl "http://www.soda.umd.edu";
    String institution "University of Maryland";
    String keywords "3.3.1, assimilation, circulation, current, currents, data, dbar, density, depth, dia, dia-surface, Earth Science > Oceans > Ocean Circulation > Ocean Currents, Earth Science > Oceans > Ocean Temperature > Potential Temperature, Earth Science > Oceans > Salinity/Density > Potential Density, Earth Science > Oceans > Salinity/Density > Salinity, i-current, j-current, latitude, level, longitude, maryland, ocean, points, potential, practical, prho, reanalysis, referenced, salinity, salt, sea, sea_water_potential_density, sea_water_potential_temperature, sea_water_practical_salinity, sea_water_x_velocity, sea_water_y_velocity, seawater, simple, soda, soda3.3.1, state, surface, t-points, temperature, time, u, university, v, velocity, 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.";
    Float64 Northernmost_Northing 89.75;
    String Principle_investigator "James A. Carton";
    String Principle_investigator_email "carton@atmos.umd.edu";
    String publisher_email "erd.data@noaa.gov";
    String publisher_name "NOAA NMFS SWFSC ERD";
    String publisher_type "institution";
    String publisher_url "https://www.pfeg.noaa.gov";
    String references "Carton, Chepurin, and Chen (2017)";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -74.75;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary "SODA3.3.1 ocean state, forced by MERRA2. The goal of SODA is to reconstruct the historical physical (and eventually biogeochemical) history of the ocean. As its name implies, the Simple Ocean Data Assimilation ocean/sea ice reanalysis (SODA) uses a simple architecture based on community standard codes with resolution chosen to match available data and the scales of motion that are resolvable. Agreement with direct measurements (to within observational error estimates) as well as unbiased statistics are expected. Please cite: Carton, Chepurin, and Chen (2017).";
    String time_coverage_end "2015-12-16T00:00:00Z";
    String time_coverage_start "1980-01-16T00:00:00Z";
    String title "SODA 3.3.1 Ocean State, 1/2°, Global, 1980-2015, Monthly Composite";
    String Website "http://www.soda.umd.edu";
    Float64 Westernmost_Easting 0.25;
  }
}

 

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://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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