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Dataset Title:  Sea Surface Salinity from SMOS level-2, Gridded 3-Day Mean, v3.0, Global, 1°,
2010-present
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Institution:  NOAA NCEI   (Dataset ID: nceiSMOS30sss3day)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (UTC) ?      2460    1 day 0h 2m 56s (uneven)
  < slider >
 latitude (degrees_north) ?      180    -1.0 (even)
  < slider >
 longitude (degrees_east) ?      360    1.0 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables)
 sss1 (3-days average of Sea Surface Salinity using roughness model 1, psu) ?
 sss1_obs (count) ?
 sss1_qi (3-days average of quality index for sss1: lower=better., count) ?
 sss2 (3-days average of Sea Surface Salinity using roughness model 2, psu) ?
 sss2_obs (count) ?
 sss2_qi (3-days average of quality index for sss2: lower=better., count) ?
 sss3 (3-days average of Sea Surface Salinity using roughness model 3, psu) ?
 sss3_obs (count) ?
 sss3_qi (3-days average of quality index for sss3: lower=better., count) ?

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 1.2753504e+9, 1.48824e+9;
    String axis "T";
    String calendar "gregorian";
    String comment "All variables are average of 3 days ending on and including file date";
    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";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range -89.5, 89.5;
    String axis "Y";
    String coordinate_defines "center";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -179.5, 179.5;
    String axis "X";
    String coordinate_defines "center";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  sss1 {
    Float32 _FillValue -999.0;
    String ancillary_variables "sss1_obs, sss1_qi";
    String cell_methods "time: mean over three days";
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String grid_mapping "crs";
    String ioos_category "Salinity";
    String long_name "3-days average of Sea Surface Salinity using roughness model 1";
    String quality_flag "sss1_qi";
    String standard_name "sea_surface_salinity";
    String units "psu";
  }
  sss1_obs {
    Float32 _FillValue -999.0;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String grid_mapping "crs";
    String ioos_category "Statistics";
    String long_name "Valid observation number used to calculate sss1 from level-2 swath data from roughness model 1";
    String standard_name "sea_surface_salinity_number_of_observations";
    String units "count";
  }
  sss1_qi {
    Float32 _FillValue -999.0;
    String cell_methods "time: mean over three days";
    Float64 colorBarMaximum 250.0;
    Float64 colorBarMinimum 0.0;
    String comment "calculated from Dg_quality_SSS_1 in level-2 data";
    String grid_mapping "crs";
    String ioos_category "Statistics";
    String long_name "3-days average of quality index for sss1: lower=better.";
    String units "count";
  }
  sss2 {
    Float32 _FillValue -999.0;
    String ancillary_variables "sss2_obs, sss2_qi";
    String cell_methods "time: mean over three days";
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String grid_mapping "crs";
    String ioos_category "Salinity";
    String long_name "3-days average of Sea Surface Salinity using roughness model 2";
    String quality_flag "sss2_qi";
    String standard_name "sea_surface_salinity";
    String units "psu";
  }
  sss2_obs {
    Float32 _FillValue -999.0;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String grid_mapping "crs";
    String ioos_category "Statistics";
    String long_name "Valid observation number used to calculate sss1 from level-2 swath data from roughness model 2";
    String standard_name "sea_surface_salinity_number_of_observations";
    String units "count";
  }
  sss2_qi {
    Float32 _FillValue -999.0;
    String cell_methods "time: mean over three days";
    Float64 colorBarMaximum 250.0;
    Float64 colorBarMinimum 0.0;
    String comment "calculated from Dg_quality_SSS_2 in level-2 data";
    String grid_mapping "crs";
    String ioos_category "Statistics";
    String long_name "3-days average of quality index for sss2: lower=better.";
    String units "count";
  }
  sss3 {
    Float32 _FillValue -999.0;
    String ancillary_variables "sss3_obs, sss3_qi";
    String cell_methods "time: mean over three days";
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String grid_mapping "crs";
    String ioos_category "Salinity";
    String long_name "3-days average of Sea Surface Salinity using roughness model 3";
    String quality_flag "sss3_qi";
    String standard_name "sea_surface_salinity";
    String units "psu";
  }
  sss3_obs {
    Float32 _FillValue -999.0;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String grid_mapping "crs";
    String ioos_category "Statistics";
    String long_name "Valid observation number used to calculate sss1 from level-2 swath data from roughness model 3";
    String standard_name "sea_surface_salinity_number_of_observations";
    String units "count";
  }
  sss3_qi {
    Float32 _FillValue -999.0;
    String cell_methods "time: mean over three days";
    Float64 colorBarMaximum 250.0;
    Float64 colorBarMinimum 0.0;
    String comment "calculated from Dg_quality_SSS_3 in level-2 data";
    String grid_mapping "crs";
    String ioos_category "Statistics";
    String long_name "3-days average of quality index for sss3: lower=better.";
    String units "count";
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creator_email "Yongsheng.Zhang@noaa.gov";
    String creator_name "Yongsheng Zhang, Ph.D.";
    String creator_type "person";
    String creator_url "https://www.nodc.noaa.gov/SatelliteData";
    String date_created "2017-04-04T06:52:51Z";
    Float64 Easternmost_Easting 179.5;
    Float64 geospatial_lat_max 89.5;
    Float64 geospatial_lat_min -89.5;
    Float64 geospatial_lat_resolution 1.0;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 179.5;
    Float64 geospatial_lon_min -179.5;
    Float64 geospatial_lon_resolution 1.0;
    String geospatial_lon_units "degrees_east";
    String grid_mapping_name "latitude_longitude";
    String history 
"Version 3.0
2018-07-20T18:27:48Z https://data.nodc.noaa.gov/thredds/dodsC/ncml/smos/nodc_binned_v3.0/SMOS_sss_3day_aggregate_20170317.ncml
2018-07-20T18:27:48Z http://coastwatch.pfeg.noaa.gov/erddap/griddap/nceiSMOS30sss3day.das";
    String infoUrl "https://www.nodc.noaa.gov/SatelliteData/sss/";
    String institution "NOAA NCEI";
    String instrument "Microwave Imaging Radiometer with Aperture Synthesis (MIRAS)";
    String keywords "3-days, average, better, calculate, calculted, centers, data, days, earth, Earth Science >Oceans > Surface Salinity, environmental, gridded, index, information, level, level-2, lower, model, national, ncei, noaa, number, observation, observations, ocean, oceans, product, quality, roughness, salinity, science, sea, sea_surface_salinity, sea_surface_salinity_number_of_observations, smos, sss1, sss1_obs, sss1_qi, sss2, sss2_obs, sss2_qi, sss3, sss3_obs, sss3_qi, statistics, surface, swath, time, US, used, using, v3.0, valid";
    String keywords_vocabulary "GCMD Science Keywords";
    String license 
"These data are available for use without restriction.
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 mission "Soil Moisture and Ocean Salinity (SMOS)";
    String nodc_template_version "NODC_NetCDF_Grid_Template_v1.0";
    Float64 Northernmost_Northing 89.5;
    String platform "PROTEUS";
    String publisher_name "NOAA/NESDIS/NCEI";
    String publisher_type "group";
    String references "SMOS L2 OS Input/Output Data Definition, SO-TN-ARG-GS-0009, SMOS Team. 5 September 2014";
    String source "European Space Agency(ESA)";
    String sourceUrl "https://data.nodc.noaa.gov/thredds/dodsC/ncml/smos/nodc_binned_v3.0/SMOS_sss_3day_aggregate_20170317.ncml";
    Float64 Southernmost_Northing -89.5;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary "This dataset is created by National Centers for Environmental Information (NCEI) Satellite Oceanography Group from SMOS level-2 Sea Surface Salinity User Data Product (Version 6.22), calculated from using 1.0x1.0 (lon/lat) degree box average";
    String time_coverage_end "2017-02-28T00:00:00Z";
    String time_coverage_start "2010-06-01T00:00:00Z";
    String title "Sea Surface Salinity from SMOS level-2, Gridded 3-Day Mean, v3.0, Global, 1°, 2010-present";
    Float64 Westernmost_Easting -179.5;
  }
}

 

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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