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Dataset Title:  JPL MEaSUREs Gridded Sea Surface Height Anomalies: Interim Version 1609 Subscribe RSS
Institution:  NASA JPL   (Dataset ID: jpl_measures_ssha)
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 →
    << -
< <
longitude (degrees_east) ?
    +
    -
< slider >
latitude (degrees_north) ?
    +
    -
< 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 7.180272e+8, 1.5176592e+9;
    String axis "T";
    String bounds "time_bounds";
    String calendar "gregorian";
    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";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range 0.08333334, 359.9167;
    String axis "X";
    String bounds "longitude_bounds";
    String ioos_category "Location";
    String long_name "Longitude";
    String point_spacing "even";
    String standard_name "longitude";
    String units "degrees_east";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range -79.91666, 79.91666;
    String axis "Y";
    String bounds "latitude_bounds";
    String ioos_category "Location";
    String long_name "Latitude";
    String point_spacing "even";
    String standard_name "latitude";
    String units "degrees_north";
  }
  SLA {
    Float32 _FillValue 9.96921e+36;
    Float64 colorBarMaximum 0.2;
    Float64 colorBarMinimum -0.2;
    String ioos_category "Sea Level";
    String long_name "Sea Level Anomaly Estimate";
    String standard_name "sea_surface_height";
    String units "m";
  }
  SLA_ERR {
    Float32 _FillValue 9.96921e+36;
    Float64 colorBarMaximum 0.02;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Quality";
    String long_name "Sea Level Anomaly Error Estimate";
    String standard_name "sea_surface_height_error";
    String units "m";
  }
  NC_GLOBAL {
    String acknowledgement "Physical Oceanography Distributed Active Archive Center (PO.DAAC)";
    String cdm_data_type "Grid";
    String contributor_name "Victor Zlotnicki";
    String contributor_role "Assistant Section Manager, NASA JPL Earth Science Section";
    String Conventions "CF-1.6, ACDD-1.3";
    String creator_email "podaac@podaac.jpl.nasa.gov";
    String creator_institution "NASA Jet Propulsion Laboratory (JPL)";
    String creator_name "Physical Oceanography Distributed Active Archive Center (PO.DAAC)";
    String creator_type "institution";
    String creator_url "https://podaac.jpl.nasa.gov/dataset/SEA_SURFACE_HEIGHT_ALT_INTERIM_GRIDS_L4_2SATS_5DAY_6THDEG_V_JPL1609";
    String date_created "2017-05-17";
    String date_issued "2017-05-17";
    String date_metadata_modified "2017-05-17";
    String date_modified "2017-05-17";
    Float64 Easternmost_Easting 359.9167;
    String geospatial_bounds "POLYGON ((-80 -180, 80 -180, 80 180, -80 180, -80 -180))";
    String geospatial_bounds_crs "EPSG:4326";
    Float64 geospatial_lat_max 79.91666;
    Float64 geospatial_lat_min -79.91666;
    Float64 geospatial_lat_resolution 0.1666666527632951;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 359.9167;
    Float64 geospatial_lon_min 0.08333334;
    Float64 geospatial_lon_resolution 0.16666668210282537;
    String geospatial_lon_units "degrees_east";
    String history 
"Data obtained from PO.DAAC FTP and re-distributed via THREDDS Data Server (TDS) at the Pacific Islands Ocean Observing System (PacIOOS) to provide temporal aggregation and distribution through NetCDF/OPeNDAP utilities like Godiva2 and ERDDAP.
2018-07-16T01:09:01Z http://localhost:8080/thredds/dodsC/hioos/satellite/jpl_measures_ssha
2018-07-16T01:09:01Z http://oos.soest.hawaii.edu/griddap/jpl_measures_ssha.das";
    String id "jpl_measures_ssha";
    String infoUrl "https://podaac.jpl.nasa.gov/dataset/SEA_SURFACE_HEIGHT_ALT_INTERIM_GRIDS_L4_2SATS_5DAY_6THDEG_V_JPL1609";
    String institution "NASA JPL";
    String instrument "Earth Remote Sensing Instruments > Active Remote Sensing > Altimeters > Radar Altimeters > ALT (TOPEX) > TOPEX Radar Altimeter, Earth Remote Sensing Instruments > Active Remote Sensing > Altimeters > Radar Altimeters > ALTIKA Altimeter, Earth Remote Sensing Instruments > Active Remote Sensing > Altimeters > Radar Altimeters > POSEIDON-2 > JASON-1 RADAR ALTIMETER, Earth Remote Sensing Instruments > Active Remote Sensing > Altimeters > Radar Altimeters > POSEIDON-3 > JASON-2 RADAR ALTIMETER, Earth Remote Sensing Instruments > Active Remote Sensing > Altimeters > Radar Altimeters > RA > ERS Radar Altimeter, Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Radiometers > AMR > Advanced Microwave Radiometer, Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Radiometers > JASON-1 Microwave Radiometer > JASON-1 Microwave Radiometer, Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Radiometers > TMR > TOPEX Microwave Radiometer";
    String instrument_vocabulary "GCMD Instrument Keywords";
    String ISO_Topic_Categories "oceans";
    String keywords "Earth Science > Oceans > Sea Surface Topography > Sea Surface Height";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "Proper credit and citation to the NASA Jet Propulsion Laboratory (JPL) Physical Oceanography Distributed Active Archive Center (PO.DAAC) are requested when using these data. 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, University of Hawaii, PacIOOS, NOAA, State of Hawaii 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 locations "Geographic Region > Global Ocean";
    String locations_vocabulary "GCMD Location Keywords";
    String Metadata_Link "http://www.pacioos.hawaii.edu/metadata/jpl_measures_ssha.html";
    String naming_authority "org.pacioos";
    Float64 Northernmost_Northing 79.91666;
    String platform "Earth Observation Satellites > > ENVISAT > Environmental Satellite, Earth Observation Satellites > > JASON-1, Earth Observation Satellites > > OSTM/JASON-2, Earth Observation Satellites > > SARAL > Satellite with ARgos and ALtika, Earth Observation Satellites > > TOPEX/POSEIDON > Ocean Topography Experiment, Earth Observation Satellites > Earth Explorers > CRYOSAT-2, Earth Observation Satellites > ERS Earth Resource Satellite > ERS-1 > European Remote Sensing Satellite-1, Earth Observation Satellites > ERS Earth Resource Satellite > ERS-2 > European Remote Sensing Satellite-2";
    String platform_vocabulary "GCMD Platform Keywords";
    String processing_level "Level 4";
    String program "Physical Oceanography Distributed Active Archive Center (PO.DAAC)";
    String project "Making Earth Science Data Records for Use in Research Environments (MEaSUREs)";
    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 "https://dx.doi.org/10.5067/SLINT-CDRV1";
    String source "satellite altimetry";
    String sourceUrl "http://localhost:8080/thredds/dodsC/hioos/satellite/jpl_measures_ssha";
    Float64 Southernmost_Northing -79.91666;
    String standard_name_vocabulary "CF Standard Name Table v39";
    String summary "Derived from multiple satellite altimeters, this dataset provides gridded sea surface height anomalies (SSHA) above mean sea level on a 1/6th-degree (~18.5-km) grid every 5 days. It contains interim heights with a delay of 2 weeks. Alternatively, there is a more accurate dataset available with a delay of about 3 months (https://dx.doi.org/10.5067/SLREF-CDRV1). These gridded data are derived from the SSHA data of TOPEX/Poseidon, Jason-1, Jason-2, and Jason-3 plus ERS-1, ERS-2, Envisat, SARAL-AltiKa, and/or CRyosat-2, depending on the date, from the Level 2 swath data accessed from the Radar Altimeter Database System (RADS). Gridding is accomplished via kriging, which gives the best linear prediction based upon prior knowledge of covariance. Through the Making Earth Science Data Records for Use in Research Environments (MEaSUREs) Program, NASA is continuing its commitment to expand our understanding of the Earth system using consistent records. Emphasis is placed on linking together multiple satellites into a constellation, developing the means of utilizing a multitude of data sources to form a coherent time series, and facilitating the use of extensive data in the development of comprehensive Earth system models.";
    String time_coverage_end "2018-02-03T12:00:00Z";
    String time_coverage_resolution "P5D";
    String time_coverage_start "1992-10-02T12:00:00Z";
    String title "JPL MEaSUREs Gridded Sea Surface Height Anomalies: Interim Version 1609";
    String version_number "1609";
    Float64 Westernmost_Easting 0.08333334;
  }
}

 

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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