ERDDAP at the APDRC
Easier access to scientific data

Data Access Form

Dataset Title:	oisss v4, oisss spurs-1 monthly v4
Institution:	IPRC (Dataset ID: hawaii_soest_0d37_de1f_e086)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Make a graph

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Dimensions	Size	Spacing
time (middle-day of the month, UTC)	45	30 days 9h 49m 5s (uneven)

latitude (degrees_north)	169	0.25 (even)

longitude (degrees_east)	301	0.25 (even)

Grid Variables (which always also download all of the dimension variables)
sss (sea surface salinity, psu)

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 1.3160448e+9, 1.431648e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "middle-day of the month";
    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 -1.0, 41.0;
    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 280.0, 355.0;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  sss {
    Float32 _FillValue -9999.0;
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String ioos_category "Salinity";
    String long_name "sea surface salinity";
    String standard_name "sea_surface_salinity";
    String units "psu";
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    String comment "Aquarius OI SSS monthly mean";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String CreatedBy "oleg";
    String CreationDate "2015/08/25 13:43:20";
    String creator_name "IPRC";
    String creator_type "institution";
    String creator_url "http://apdrc.soest.hawaii.edu/thredds/dodsC/ncml_aggregation/oisss_v4/oisss_spurs-1_monthly_v4.ncml.html";
    String DataSource "Aquarius OI SSS weekly (North Atlantic)";
    Float64 Easternmost_Easting 355.0;
    Float64 geospatial_lat_max 41.0;
    Float64 geospatial_lat_min -1.0;
    Float64 geospatial_lat_resolution 0.25;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 355.0;
    Float64 geospatial_lon_min 280.0;
    Float64 geospatial_lon_resolution 0.25;
    String geospatial_lon_units "degrees_east";
    String history 
"2025-05-09T21:40:02Z http://apdrc.soest.hawaii.edu/thredds/dodsC/ncml_aggregation/oisss_v4/oisss_spurs-1_monthly_v4.ncml
2025-05-09T21:40:02Z http://apdrc.soest.hawaii.edu/erddap/griddap/hawaii_soest_0d37_de1f_e086.das";
    String infoUrl "http://apdrc.soest.hawaii.edu/thredds/dodsC/ncml_aggregation/oisss_v4/oisss_spurs-1_monthly_v4.ncml.html";
    String institution "IPRC";
    String keywords 
"center, data, density, international, interpolation, iprc, latitude,
longitude, month, monthly, ocean, oceans,
Oceans > Salinity/Density > Salinity,
oisss, optimum, pacific, processes, regional, research, salinity, sea,
sea_surface_salinity, spurs, spurs-1, sss, study, surface, time, upper";
    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 41.0;
    String Notes "http://iprc.soest.hawaii.edu/users/oleg/oisss/atl/OISSS_NA_Notes.pdf";
    String sourceUrl "http://apdrc.soest.hawaii.edu/thredds/dodsC/ncml_aggregation/oisss_v4/oisss_spurs-1_monthly_v4.ncml";
    Float64 Southernmost_Northing -1.0;
    String standard_name_vocabulary "CF Standard Name Table v29";
    String summary 
"Aquarius Optimum Interpolation (OI) SSS monthly mean (oisss spurs-1 monthly
v4)";
    String time_coverage_end "2015-05-15T00:00:00Z";
    String time_coverage_start "2011-09-15T00:00:00Z";
    String title "oisss v4, oisss spurs-1 monthly v4";
    Float64 Westernmost_Easting 280.0;
  }
}

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.

(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://apdrc.soest.hawaii.edu/erddap/griddap/datasetID.fileType{?query}
For example,
https://apdrc.soest.hawaii.edu/erddap/griddap/jplMURSST41.htmlTable?analysed_sst[(2015-06-09T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a variable name (e.g., analysed_sst),
followed by a set of [] for each of the variable's dimensions
(for example, [time][latitude][longitude]),
with your desired (start):stride:(stop) values within each [].

For details, see the griddap Documentation.

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