Easier access to scientific data
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ERDDAP
Easier access to scientific data |
| Dataset Title: | NEOWAVE Regional Tsunami Model: Hawaii: Oahu: Pearl Harbor
|
| Institution: | Pacific Islands Ocean Observing System (PacIOOS) (Dataset ID: neowave_pearl_harbor) |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Make a graph
|
Attributes {
latitude {
String _CoordinateAxisType "Lat";
Float32 actual_range 21.295, 21.395;
String axis "Y";
String ioos_category "Location";
String long_name "Latitude";
String short_name "lat";
String standard_name "latitude";
String units "degrees_north";
}
longitude {
String _CoordinateAxisType "Lon";
Float32 actual_range -158.03, -157.925;
String axis "X";
String ioos_category "Location";
String long_name "Longitude";
String short_name "lon";
String standard_name "longitude";
String units "degrees_east";
}
current_event01 {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Maximum speed during an event.";
Float32 earthquake_degrees_east -168.57301;
Float32 earthquake_degrees_north 51.80708;
String earthquake_location "Aleutian Trench";
Float32 earthquake_moment_magnitude 8.2;
String ioos_category "Currents";
String long_name "current from Aleutians Mw 8.2";
Float32 missing_value -9999.0;
String short_name "current";
String standard_name "sea_water_speed";
String units "meters second-1";
}
current_event02 {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Maximum speed during an event.";
Float32 earthquake_degrees_east -168.57301;
Float32 earthquake_degrees_north 51.80708;
String earthquake_location "Aleutian Trench";
Float32 earthquake_moment_magnitude 8.4;
String ioos_category "Currents";
String long_name "current from Aleutians Mw 8.4";
Float32 missing_value -9999.0;
String short_name "current";
String standard_name "sea_water_speed";
String units "meters second-1";
}
current_event03 {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Maximum speed during an event.";
Float32 earthquake_degrees_east -168.57301;
Float32 earthquake_degrees_north 51.80708;
String earthquake_location "Aleutian Trench";
Float32 earthquake_moment_magnitude 8.6;
String ioos_category "Currents";
String long_name "current from Aleutians Mw 8.6";
Float32 missing_value -9999.0;
String short_name "current";
String standard_name "sea_water_speed";
String units "meters second-1";
}
current_event04 {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Maximum speed during an event.";
Float32 earthquake_degrees_east -75.55734;
Float32 earthquake_degrees_north -42.85423;
String earthquake_location "Peru-Chile Trench";
Float32 earthquake_moment_magnitude 8.8;
String ioos_category "Currents";
String long_name "current from Peru-Chile Mw 8.8";
Float32 missing_value -9999.0;
String short_name "current";
String standard_name "sea_water_speed";
String units "meters second-1";
}
current_event05 {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Maximum speed during an event.";
Float32 earthquake_degrees_east -75.55734;
Float32 earthquake_degrees_north -42.85423;
String earthquake_location "Peru-Chile Trench";
Float32 earthquake_moment_magnitude 9.0;
String ioos_category "Currents";
String long_name "current from Peru-Chile Mw 9.0";
Float32 missing_value -9999.0;
String short_name "current";
String standard_name "sea_water_speed";
String units "meters second-1";
}
current_event06 {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Maximum speed during an event.";
Float32 earthquake_degrees_east -75.55734;
Float32 earthquake_degrees_north -42.85423;
String earthquake_location "Peru-Chile Trench";
Float32 earthquake_moment_magnitude 9.2;
String ioos_category "Currents";
String long_name "current from Peru-Chile Mw 9.2";
Float32 missing_value -9999.0;
String short_name "current";
String standard_name "sea_water_speed";
String units "meters second-1";
}
current_event07 {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Maximum speed during an event.";
Float32 earthquake_degrees_east 161.94267;
Float32 earthquake_degrees_north 52.70594;
String earthquake_location "Kurilâ€"Kamchatka Trench";
Float32 earthquake_moment_magnitude 8.6;
String ioos_category "Currents";
String long_name "current from Kamchatka Mw 8.6";
Float32 missing_value -9999.0;
String short_name "current";
String standard_name "sea_water_speed";
String units "meters second-1";
}
current_event08 {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Maximum speed during an event.";
Float32 earthquake_degrees_east 161.94267;
Float32 earthquake_degrees_north 52.70594;
String earthquake_location "Kurilâ€"Kamchatka Trench";
Float32 earthquake_moment_magnitude 8.8;
String ioos_category "Currents";
String long_name "current from Kamchatka Mw 8.8";
Float32 missing_value -9999.0;
String short_name "current";
String standard_name "sea_water_speed";
String units "meters second-1";
}
current_event09 {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Maximum speed during an event.";
Float32 earthquake_degrees_east 161.94267;
Float32 earthquake_degrees_north 52.70594;
String earthquake_location "Kurilâ€"Kamchatka Trench";
Float32 earthquake_moment_magnitude 9.0;
String ioos_category "Currents";
String long_name "current from Kamchatka Mw 9.0";
Float32 missing_value -9999.0;
String short_name "current";
String standard_name "sea_water_speed";
String units "meters second-1";
}
drawdown_event01 {
Float32 _FillValue 9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Lowest sea surface elevation from the tide level during an event; vertical datum is mean sea level.";
Float32 earthquake_degrees_east -168.57301;
Float32 earthquake_degrees_north 51.80708;
String earthquake_location "Aleutian Trench";
Float32 earthquake_moment_magnitude 8.2;
String ioos_category "Sea Level";
String long_name "drawdown from Aleutians Mw 8.2";
Float32 missing_value 9999.0;
String short_name "drawdown";
String standard_name "sea_surface_height";
String units "meters";
}
drawdown_event02 {
Float32 _FillValue 9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Lowest sea surface elevation from the tide level during an event; vertical datum is mean sea level.";
Float32 earthquake_degrees_east -168.57301;
Float32 earthquake_degrees_north 51.80708;
String earthquake_location "Aleutian Trench";
Float32 earthquake_moment_magnitude 8.4;
String ioos_category "Sea Level";
String long_name "drawdown from Aleutians Mw 8.4";
Float32 missing_value 9999.0;
String short_name "drawdown";
String standard_name "sea_surface_height";
String units "meters";
}
drawdown_event03 {
Float32 _FillValue 9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Lowest sea surface elevation from the tide level during an event; vertical datum is mean sea level.";
Float32 earthquake_degrees_east -168.57301;
Float32 earthquake_degrees_north 51.80708;
String earthquake_location "Aleutian Trench";
Float32 earthquake_moment_magnitude 8.6;
String ioos_category "Sea Level";
String long_name "drawdown from Aleutians Mw 8.6";
Float32 missing_value 9999.0;
String short_name "drawdown";
String standard_name "sea_surface_height";
String units "meters";
}
drawdown_event04 {
Float32 _FillValue 9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Lowest sea surface elevation from the tide level during an event; vertical datum is mean sea level.";
Float32 earthquake_degrees_east -75.55734;
Float32 earthquake_degrees_north -42.85423;
String earthquake_location "Peru-Chile Trench";
Float32 earthquake_moment_magnitude 8.8;
String ioos_category "Sea Level";
String long_name "drawdown from Peru-Chile Mw 8.8";
Float32 missing_value 9999.0;
String short_name "drawdown";
String standard_name "sea_surface_height";
String units "meters";
}
drawdown_event05 {
Float32 _FillValue 9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Lowest sea surface elevation from the tide level during an event; vertical datum is mean sea level.";
Float32 earthquake_degrees_east -75.55734;
Float32 earthquake_degrees_north -42.85423;
String earthquake_location "Peru-Chile Trench";
Float32 earthquake_moment_magnitude 9.0;
String ioos_category "Sea Level";
String long_name "drawdown from Peru-Chile Mw 9.0";
Float32 missing_value 9999.0;
String short_name "drawdown";
String standard_name "sea_surface_height";
String units "meters";
}
drawdown_event06 {
Float32 _FillValue 9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Lowest sea surface elevation from the tide level during an event; vertical datum is mean sea level.";
Float32 earthquake_degrees_east -75.55734;
Float32 earthquake_degrees_north -42.85423;
String earthquake_location "Peru-Chile Trench";
Float32 earthquake_moment_magnitude 9.2;
String ioos_category "Sea Level";
String long_name "drawdown from Peru-Chile Mw 9.2";
Float32 missing_value 9999.0;
String short_name "drawdown";
String standard_name "sea_surface_height";
String units "meters";
}
drawdown_event07 {
Float32 _FillValue 9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Lowest sea surface elevation from the tide level during an event; vertical datum is mean sea level.";
Float32 earthquake_degrees_east 161.94267;
Float32 earthquake_degrees_north 52.70594;
String earthquake_location "Kurilâ€"Kamchatka Trench";
Float32 earthquake_moment_magnitude 8.6;
String ioos_category "Sea Level";
String long_name "drawdown from Kamchatka Mw 8.6";
Float32 missing_value 9999.0;
String short_name "drawdown";
String standard_name "sea_surface_height";
String units "meters";
}
drawdown_event08 {
Float32 _FillValue 9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Lowest sea surface elevation from the tide level during an event; vertical datum is mean sea level.";
Float32 earthquake_degrees_east 161.94267;
Float32 earthquake_degrees_north 52.70594;
String earthquake_location "Kurilâ€"Kamchatka Trench";
Float32 earthquake_moment_magnitude 8.8;
String ioos_category "Sea Level";
String long_name "drawdown from Kamchatka Mw 8.8";
Float32 missing_value 9999.0;
String short_name "drawdown";
String standard_name "sea_surface_height";
String units "meters";
}
drawdown_event09 {
Float32 _FillValue 9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Lowest sea surface elevation from the tide level during an event; vertical datum is mean sea level.";
Float32 earthquake_degrees_east 161.94267;
Float32 earthquake_degrees_north 52.70594;
String earthquake_location "Kurilâ€"Kamchatka Trench";
Float32 earthquake_moment_magnitude 9.0;
String ioos_category "Sea Level";
String long_name "drawdown from Kamchatka Mw 9.0";
Float32 missing_value 9999.0;
String short_name "drawdown";
String standard_name "sea_surface_height";
String units "meters";
}
surge_event01 {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Highest sea surface elevation from the tide level during an event; vertical datum is mean sea level.";
Float32 earthquake_degrees_east -168.57301;
Float32 earthquake_degrees_north 51.80708;
String earthquake_location "Aleutian Trench";
Float32 earthquake_moment_magnitude 8.2;
String ioos_category "Sea Level";
String long_name "surge from Aleutians Mw 8.2";
Float32 missing_value -9999.0;
String short_name "surge";
String standard_name "sea_surface_height";
String units "meters";
}
surge_event02 {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Highest sea surface elevation from the tide level during an event; vertical datum is mean sea level.";
Float32 earthquake_degrees_east -168.57301;
Float32 earthquake_degrees_north 51.80708;
String earthquake_location "Aleutian Trench";
Float32 earthquake_moment_magnitude 8.4;
String ioos_category "Sea Level";
String long_name "surge from Aleutians Mw 8.4";
Float32 missing_value -9999.0;
String short_name "surge";
String standard_name "sea_surface_height";
String units "meters";
}
surge_event03 {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Highest sea surface elevation from the tide level during an event; vertical datum is mean sea level.";
Float32 earthquake_degrees_east -168.57301;
Float32 earthquake_degrees_north 51.80708;
String earthquake_location "Aleutian Trench";
Float32 earthquake_moment_magnitude 8.6;
String ioos_category "Sea Level";
String long_name "surge from Aleutians Mw 8.6";
Float32 missing_value -9999.0;
String short_name "surge";
String standard_name "sea_surface_height";
String units "meters";
}
surge_event04 {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Highest sea surface elevation from the tide level during an event; vertical datum is mean sea level.";
Float32 earthquake_degrees_east -75.55734;
Float32 earthquake_degrees_north -42.85423;
String earthquake_location "Peru-Chile Trench";
Float32 earthquake_moment_magnitude 8.8;
String ioos_category "Sea Level";
String long_name "surge from Peru-Chile Mw 8.8";
Float32 missing_value -9999.0;
String short_name "surge";
String standard_name "sea_surface_height";
String units "meters";
}
surge_event05 {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Highest sea surface elevation from the tide level during an event; vertical datum is mean sea level.";
Float32 earthquake_degrees_east -75.55734;
Float32 earthquake_degrees_north -42.85423;
String earthquake_location "Peru-Chile Trench";
Float32 earthquake_moment_magnitude 9.0;
String ioos_category "Sea Level";
String long_name "surge from Peru-Chile Mw 9.0";
Float32 missing_value -9999.0;
String short_name "surge";
String standard_name "sea_surface_height";
String units "meters";
}
surge_event06 {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Highest sea surface elevation from the tide level during an event; vertical datum is mean sea level.";
Float32 earthquake_degrees_east -75.55734;
Float32 earthquake_degrees_north -42.85423;
String earthquake_location "Peru-Chile Trench";
Float32 earthquake_moment_magnitude 9.2;
String ioos_category "Sea Level";
String long_name "surge from Peru-Chile Mw 9.2";
Float32 missing_value -9999.0;
String short_name "surge";
String standard_name "sea_surface_height";
String units "meters";
}
surge_event07 {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Highest sea surface elevation from the tide level during an event; vertical datum is mean sea level.";
Float32 earthquake_degrees_east 161.94267;
Float32 earthquake_degrees_north 52.70594;
String earthquake_location "Kurilâ€"Kamchatka Trench";
Float32 earthquake_moment_magnitude 8.6;
String ioos_category "Sea Level";
String long_name "surge from Kamchatka Mw 8.6";
Float32 missing_value -9999.0;
String short_name "surge";
String standard_name "sea_surface_height";
String units "meters";
}
surge_event08 {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Highest sea surface elevation from the tide level during an event; vertical datum is mean sea level.";
Float32 earthquake_degrees_east 161.94267;
Float32 earthquake_degrees_north 52.70594;
String earthquake_location "Kurilâ€"Kamchatka Trench";
Float32 earthquake_moment_magnitude 8.8;
String ioos_category "Sea Level";
String long_name "surge from Kamchatka Mw 8.8";
Float32 missing_value -9999.0;
String short_name "surge";
String standard_name "sea_surface_height";
String units "meters";
}
surge_event09 {
Float32 _FillValue -9999.0;
Float64 colorBarMaximum 2.0;
Float64 colorBarMinimum 0.0;
String comment "Highest sea surface elevation from the tide level during an event; vertical datum is mean sea level.";
Float32 earthquake_degrees_east 161.94267;
Float32 earthquake_degrees_north 52.70594;
String earthquake_location "Kurilâ€"Kamchatka Trench";
Float32 earthquake_moment_magnitude 9.0;
String ioos_category "Sea Level";
String long_name "surge from Kamchatka Mw 9.0";
Float32 missing_value -9999.0;
String short_name "surge";
String standard_name "sea_surface_height";
String units "meters";
}
NC_GLOBAL {
String acknowledgement "The Pacific Islands Ocean Observing System (PacIOOS) is funded through the National Oceanic and Atmospheric Administration (NOAA) as a Regional Association within the U.S. Integrated Ocean Observing System (IOOS). PacIOOS is coordinated by the University of Hawaii School of Ocean and Earth Science and Technology (SOEST).";
String cdm_data_type "Grid";
String comment "Model runs produced by Kwok Fai Cheung (cheung@hawaii.edu).";
String Conventions "CF-1.6, ACDD-1.3";
String creator_email "cheung@hawaii.edu";
String creator_institution "University of Hawaii at Manoa";
String creator_name "Kwok Fai Cheung";
String creator_type "person";
String creator_url "https://www.soest.hawaii.edu/ore/people/faculty/kwok-fai-cheung/";
String date_created "2022-04-20";
String date_issued "2022-04-20";
String date_metadata_modified "2024-03-25";
String date_modified "2024-03-25";
String defaultGraphQuery "surge_event01";
String drawLandMask "off";
Float64 Easternmost_Easting -157.925;
String geospatial_bounds "POLYGON ((21.2950 -158.0300, 21.3950 -158.0300, 21.3950 -157.9250, 21.2950 -157.9250, 21.2950 -158.0300))";
String geospatial_bounds_crs "EPSG:4326";
Float64 geospatial_lat_max 21.395;
Float64 geospatial_lat_min 21.295;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max -157.925;
Float64 geospatial_lon_min -158.03;
String geospatial_lon_units "degrees_east";
String history
"2022-04-20T20:30:00Z New dataset.
2024-03-25T20:30:00Z Drawdown variables made positive by addition of scale_factor.
2024-11-21T16:27:48Z https://pae-paha.pacioos.hawaii.edu/thredds/dodsC/neowave_pearl_harbor
2024-11-21T16:27:48Z https://pae-paha.pacioos.hawaii.edu/erddap/griddap/neowave_pearl_harbor.das";
String id "neowave_pearl_harbor";
String infoUrl "https://www.soest.hawaii.edu/ore/people/faculty/kwok-fai-cheung/";
String institution "Pacific Islands Ocean Observing System (PacIOOS)";
String instrument "Not Applicable > Not Applicable";
String instrument_vocabulary "GCMD Instrument Keywords";
String ISO_Topic_Categories "oceans";
String keywords "Earth Science > Human Dimensions > Natural Hazards > Tsunamis, Earth Science > Oceans > Coastal Processes > Sea Surface Height, Earth Science > Oceans > Coastal Processes > Storm Surge, Earth Science > Oceans > Ocean Circulation > Ocean Currents, Earth Science > Oceans > Ocean Waves > Storm Surge, Earth Science > Oceans > Ocean Waves > Tsunamis, Earth Science > Oceans > Sea Surface Topography > Sea Surface Height, Earth Science Services > Models > Ocean General Circulation Models (OGCM)/Regional Ocean Models, Earth Science Services > Models > Weather Research/Forecast Models";
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, 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 "Continent > North America > United States Of America > Hawaii, Ocean > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Oahu > Pearl Harbor";
String locations_vocabulary "GCMD Location Keywords";
String metadata_link "https://www.pacioos.hawaii.edu/metadata/neowave_pearl_harbor.html";
String naming_authority "org.pacioos";
Float64 Northernmost_Northing 21.395;
String platform "Models/Analyses > > Models";
String platform_vocabulary "GCMD Platform Keywords";
String program "Pacific Islands Ocean Observing System (PacIOOS)";
String project "Pacific Islands Ocean Observing System (PacIOOS)";
String publisher_email "info@pacioos.org";
String publisher_institution "Pacific Islands Ocean Observing System (PacIOOS)";
String publisher_name "Pacific Islands Ocean Observing System (PacIOOS)";
String publisher_type "institution";
String publisher_url "http://www.pacioos.hawaii.edu";
String references "Related publication: Yamazaki, Y., Kowalik, Z. and Cheung, K.F. (2009), Depth-integrated, non-hydrostatic model for wave breaking and run-up. Int. J. Numer. Meth. Fluids, 61: 473-497. https://doi.org/10.1002/fld.1952.";
String source "Non-hydrostatic Evolution of Ocean WAVEs (NEOWAVE) tsunami model";
String sourceUrl "https://pae-paha.pacioos.hawaii.edu/thredds/dodsC/neowave_pearl_harbor";
Float64 Southernmost_Northing 21.295;
String standard_name_vocabulary "CF Standard Name Table v39";
String summary "Non-hydrostatic Evolution of Ocean WAVEs (NEOWAVE) regional tsunami model for Pearl Harbor on the south coast of the island of Oahu in the state of Hawaii, categorized by earthquake magnitude and subduction zone. Includes nearshore hazard maps of surge, drawdown, and current for hypothetical advisory and warning-level tsunamis from potential sources at the Aleutian, Kuril-Kamchatka, and Peru-Chile subduction zones. Data are gridded at approximately 9-m resolution referenced to the WGS84 coordinate system and use a vertical datum of mean sea level (MSL). This shock-capturing, dispersive wave model computes tsunami generation, propagation, and inundation for complex flow patterns in shelf and reef environments. It has been validated with analytical, laboratory, and field benchmarks and is approved by the National Tsunami Hazard Mitigation Program. These hazard maps cover tsunamis only; other potential hazards such as wind waves and swells would be additive to the surge, drawdown, and current described by these data.";
String time_coverage_duration "P0D";
String time_coverage_resolution "P0D";
String title "NEOWAVE Regional Tsunami Model: Hawaii: Oahu: Pearl Harbor";
Float64 Westernmost_Easting -158.03;
}
}
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.
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.