ERDDAP > griddap > Data Access Form

Dataset Title:	OSOM-Beta0.2
Institution:	Rhode Island Data Discovery   (Dataset ID: osom_v2_9429_72b1_b541)
Information:	Summary | License | Metadata | Background | Make a graph

 

Dimensions	Start	Stride	Stop	Size	Spacing
time (UTC)				105185	1h 30m 0s (even)
eta_rho (count)				1100	1.0 (even)
xi_rho (count)				1000	1.0 (even)

Grid Variables (which always also download all of the dimension variables)

SalinityBottom (salinity, PSU)

SalinitySurface (salinity, PSU)

WaterTempBottom (potential temperature, degree_C)

WaterTempSurface (potential temperature, degree_C)

SurfaceHeight (free-surface, meter)

VelocityEastwardBottom (meter second-1)

VelocityEastwardSurface (meter second-1)

VelocityNorthwardBottom (meter second-1)

VelocityNorthwardSurface (meter second-1)

KineticEnergyBottom (kinetic energy at RHO-points, J kg-1)

KineticEnergySurface (J kg-1)

File type: (more information) .asc - View OPeNDAP-style ISO-8859-1 comma-separated text. .csv - Download a ISO-8859-1 comma-separated text table (line 1: names; line 2: units; ISO 8601 times). .csvp - Download a ISO-8859-1 .csv file with line 1: name (units). Times are ISO 8601 strings. .csv0 - Download a ISO-8859-1 .csv file without column names or units. Times are ISO 8601 strings. .das - View the dataset's metadata via an ISO-8859-1 OPeNDAP Dataset Attribute Structure (DAS). .dds - View the dataset's structure via an ISO-8859-1 OPeNDAP Dataset Descriptor Structure (DDS). .dods - OPeNDAP clients use this to download the data in the DODS binary format. .esriAscii - Download an ISO-8859-1 ESRI ASCII file (latitude longitude data only; longitude must be all below or all above 180). .fgdc - View the dataset's UTF-8 FGDC .xml metadata. .graph - View a Make A Graph web page. .help - View a web page with a description of griddap. .html - View an OPeNDAP-style HTML Data Access Form. .htmlTable - View a UTF-8 .html web page with the data in a table. Times are ISO 8601 strings. .iso19115 - View the dataset's ISO 19115-2/19139 UTF-8 .xml metadata. .itx - Download an ISO-8859-1 Igor Text File. Each axis variable and each data variable becomes a wave. .json - View a table-like UTF-8 JSON file (missing value = 'null'; times are ISO 8601 strings). .jsonlCSV1 - View a UTF-8 JSON Lines CSV file with column names on line 1 (mv = 'null'; times are ISO 8601 strings). .jsonlCSV - View a UTF-8 JSON Lines CSV file without column names (mv = 'null'; times are ISO 8601 strings). .jsonlKVP - View a UTF-8 JSON Lines file with Key:Value pairs (missing value = 'null'; times are ISO 8601 strings). .mat - Download a MATLAB binary file. .nc - Download a NetCDF-3 binary file with COARDS/CF/ACDD metadata. .ncHeader - View the UTF-8 header (the metadata) for the NetCDF-3 .nc file. .ncml - View the dataset's structure and metadata as a UTF-8 NCML .xml file. .nccsv - Download a NetCDF-3-like 7-bit ASCII NCCSV .csv file with COARDS/CF/ACDD metadata. .nccsvMetadata - View the dataset's metadata as the top half of a 7-bit ASCII NCCSV .csv file. .ncoJson - Download a UTF-8 NCO lvl=2 JSON file with COARDS/CF/ACDD metadata. .odvTxt - Download time,latitude,longitude,otherVariables as an ODV Generic Spreadsheet File (.txt). .parquet - Download as a parquet file. Metadata contains column names ("column_names") and units ("column_units"). .parquetWMeta - Download as a parquet file with detailed metadata. .timeGaps - View a UTF-8 list of gaps in the time values which are larger than the median gap. .tsv - Download a ISO-8859-1 tab-separated text table (line 1: names; line 2: units; ISO 8601 times). .tsvp - Download a ISO-8859-1 .tsv file with line 1: name (units). Times are ISO 8601 strings. .tsv0 - Download a ISO-8859-1 .tsv file without column names or units. Times are ISO 8601 strings. .wav - Download a .wav audio file. All columns must be numeric and of the same type. .xhtml - View a UTF-8 XHTML (XML) file with the data in a table. Times are ISO 8601 strings. .geotif - View a grayscale GeoTIFF .tif file (for latitude longitude data; longitude must be all below or all above 180). .kml - View a Google Earth .kml file (for latitude, longitude data only). .smallPdf - View a small .pdf image file with a graph or map. .pdf - View a standard, medium-sized .pdf image file with a graph or map. .largePdf - View a large .pdf image file with a graph or map. .smallPng - View a small .png image file with a graph or map. .png - View a standard, medium-sized .png image file with a graph or map. .largePng - View a large .png image file with a graph or map. .transparentPng - View a .png image file (just the data, without axes, landmask, or legend).

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.1045376005e+9, 1.6725312005e+9;
    String axis "T";
    String calendar "gregorian";
    String field "time, scalar, series";
    String ioos_category "Time";
    String long_name "time since initialization";
    String source_name "ocean_time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  eta_rho {
    Int16 actual_range 0, 1099;
    String long_name "eta rho";
    String units "count";
  }
  xi_rho {
    Int16 actual_range 0, 999;
    String long_name "xi rho";
    String units "count";
  }
  SalinityBottom {
    Float32 _FillValue 1.0e+37;
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String field "salinity, scalar, series";
    String long_name "salinity";
    String standard_name "sea_water_practical_salinity";
    String time "ocean_time";
    String units "PSU";
  }
  SalinitySurface {
    Float32 _FillValue 1.0e+37;
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String field "salinity, scalar, series";
    String long_name "salinity";
    String standard_name "sea_water_practical_salinity";
    String time "ocean_time";
    String units "PSU";
  }
  WaterTempBottom {
    Float32 _FillValue 1.0e+37;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String field "temperature, scalar, series";
    String long_name "potential temperature";
    String standard_name "sea_water_potential_temperature";
    String time "ocean_time";
    String units "degree_C";
  }
  WaterTempSurface {
    Float32 _FillValue 1.0e+37;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String field "temperature, scalar, series";
    String long_name "potential temperature";
    String standard_name "sea_water_potential_temperature";
    String time "ocean_time";
    String units "degree_C";
  }
  SurfaceHeight {
    Float32 _FillValue 1.0e+37;
    Float64 colorBarMaximum 2.0;
    Float64 colorBarMinimum -2.0;
    String field "free-surface, scalar, series";
    String long_name "free-surface";
    String standard_name "sea_surface_height";
    String time "ocean_time";
    String units "meter";
  }
  VelocityEastwardBottom {
    Float32 _FillValue 1.0e+37;
    Float64 colorBarMaximum 0.3;
    Float64 colorBarMinimum -0.3;
    String field "u_eastward, scalar, series";
    String long_name "eastward momentum component at RHO-points";
    String time "ocean_time";
    String units "meter second-1";
  }
  VelocityEastwardSurface {
    Float32 _FillValue 1.0e+37;
    Float64 colorBarMaximum 0.3;
    Float64 colorBarMinimum -0.3;
    String field "u_eastward, scalar, series";
    String long_name "eastward momentum component at RHO-points";
    String time "ocean_time";
    String units "meter second-1";
  }
  VelocityNorthwardBottom {
    Float32 _FillValue 1.0e+37;
    Float64 colorBarMaximum 0.3;
    Float64 colorBarMinimum -0.3;
    String field "v_northward, scalar, series";
    String long_name "northward momentum component at RHO-points";
    String time "ocean_time";
    String units "meter second-1";
  }
  VelocityNorthwardSurface {
    Float32 _FillValue 1.0e+37;
    Float64 colorBarMaximum 0.3;
    Float64 colorBarMinimum -0.3;
    String field "v_northward, scalar, series";
    String long_name "northward momentum component at RHO-points";
    String time "ocean_time";
    String units "meter second-1";
  }
  KineticEnergyBottom {
    Float32 _FillValue 1.0e+37;
    String field "ke, scalar, series";
    String long_name "kinetic energy at RHO-points";
    String time "ocean_time";
    String units "J kg-1";
  }
  KineticEnergySurface {
    Float32 _FillValue 1.0e+37;
    String field "ke, scalar, series";
    String long_name "kinetic energy at RHO-points";
    String time "ocean_time";
    String units "J kg-1";
  }
  NC_GLOBAL {
    String ana_file "ROMS/Functionals/ana_btflux.h";
    String bry_file "ROMS_forcing_files/openbound/bry_osom_cosine_hab_monthly-nuts_grid4_mod10_15level_smooth_2011.nc";
    String cdm_data_type "Grid";
    String code_dir "/oscar/data/epscor/OSOM/opt/ROMS_Cosine_Sed";
    String compiler_command "/oscar/runtime/software/hpcx-mpi/4.1.5rc2/hpcx-ompi/bin/mpif90";
    String compiler_flags "-frepack-arrays -fallow-argument-mismatch -fallow-invalid-boz -O3 -ffast-math -ffree-form -ffree-line-length-none -ffree-form -ffree-line-length-none -ffree-for";
    String compiler_system "gfortran";
    String Conventions "CF-1.10, COARDS, ACDD-1.3";
    String CPP_options "osom_ramptides, ADD_FSOBC, ADD_M2OBC, ANA_BSFLUX, ANA_BTFLUX, ASSUMED_SHAPE, BULK_FLUXES, CURVGRID, DEFLATE, DIFF_GRID, DJ_GRADPS, DOUBLE_PRECISION, EMINUSP, GLS_MIXING, HDF5, LONGWAVE_OUT, MASKING, MIX_GEO_TS, MIX_S_UV, MPI, NONLINEAR, NONLIN_EOS, NO_WRITE_GRID, PERFECT_RESTART, POWER_LAW, PROFILE, K_GSCHEME, RADIATION_2D, !RST_SINGLE, SALINITY, SOLAR_SOURCE, SOLVE3D, SSH_TIDES, STATIONS, TS_MPDATA, TS_DIF2, UV_ADV, UV_COR, UV_U3HADVECTION, UV_C4VADVECTION, UV_LOGDRAG, UV_TIDES, UV_VIS2, VAR_RHO_2D, VISC_GRID";
    String file "/jobtmp/phall1/OSOM_v2/2011/ocean_his_2192.nc";
    String frc_file_01 "ROMS_forcing_files/tidal/osom_grid4_mindep_smlp_mod10_tidalforcing_2011.nc";
    String frc_file_02 "ROMS_forcing_files/met/frc_NAM_wind_fields_OSOM_2011_ref-2005-01-01.nc";
    String frc_file_03 "ROMS_forcing_files/met/frc_bulk8_point_osom_2011_ref-2005-01-01_localswrad.nc";
    String grd_file "ROMS_forcing_files/grid/osom_grid4_mindep_smlp_mod10.nc";
    String header_dir "/oscar/data/epscor/OSOM/work/OSOM_v2";
    String header_file "osom.h";
    String his_base "/jobtmp/phall1/OSOM_v2/2011/ocean_his";
    String history 
"ROMS/TOMS, Version 3.7, Wednesday - November 6, 2024 -  9:14:55 AM
2025-10-08T18:14:42Z (local files)
2025-10-08T18:14:42Z http://qa-erddap.riddc.brown.edu/erddap/griddap/osom_v2_9429_72b1_b541.das";
    String infoUrl "riddc.brown.edu";
    String ini_file "ROMS_forcing_files/init/ocean_rst_2010_end.nc";
    String institution "Rhode Island Data Discovery";
    String keywords "beta0.2, component, data, density, earth, Earth Science > Oceans > Ocean Temperature > Potential Temperature, Earth Science > Oceans > Salinity/Density > Salinity, Earth Science > Oceans > Sea Surface Topography > Sea Surface Height, eastward, energy, eta, eta_rho, free, free-surface, height, kinetic, KineticEnergyBottom, KineticEnergySurface, momentum, northward, ocean, ocean_time, oceans, osom, osom-beta0.2-2005, points, potential, practical, rho, rho-points, salinity, SalinityBottom, SalinitySurface, science, sea, sea_surface_height, sea_water_potential_temperature, sea_water_practical_salinity, seawater, surface, SurfaceHeight, temperature, time, topography, VelocityEastwardBottom, VelocityEastwardSurface, VelocityNorthwardBottom, VelocityNorthwardSurface, water, WaterTempBottom, WaterTempSurface, xi, xi_rho";
    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.";
    String NLM_LBC 
"EDGE:  WEST   SOUTH  EAST   NORTH  
zeta:  Cha    Cha    Cha    Clo    
ubar:  Fla    Fla    Fla    Clo    
vbar:  Fla    Fla    Fla    Clo    
u:     RadNud RadNud RadNud Clo    
v:     RadNud RadNud RadNud Clo    
temp:  RadNud RadNud RadNud Clo    
salt:  RadNud RadNud RadNud Clo    
tke:   Rad    Rad    Rad    Clo";
    String rst_file "/jobtmp/phall1/OSOM_v2/2011/ocean_rst.nc";
    String sourceUrl "(local files)";
    String spos_file "ROMS_forcing_files/input_files/stations_osom_cosine_apr2024_optics.in";
    String sta_file "/jobtmp/phall1/OSOM_v2/2011/ocean_sta.nc";
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "OSOM-Beta0.2. Beta version of OSOM model data (2005-2022). Data from a local source.";
    String svn_url "https://www.myroms.org/svn/src/trunk";
    String tiling "016x016";
    String time_coverage_end "2023-01-01T00:00:00Z";
    String time_coverage_start "2005-01-01T00:00:00Z";
    String title "OSOM-Beta0.2";
    String type "ROMS/TOMS history file";
  }
}

 

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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 Data Access Protocol (DAP) and its projection constraints.

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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