ERDDAP
Easier access to scientific data |
Dataset Title: | ETOPO1 Global Surface Relief: Bedrock |
Institution: | NOAA National Geophysical Data Center (NGDC) Marine Geology and Geophysics (MGG) Division (Dataset ID: etopo1_bedrock) |
Information: | Summary | License | FGDC | ISO 19115 | Metadata | Background | Make a graph |
Attributes { latitude { String _CoordinateAxisType "Lat"; Float64 actual_range -90.0, 90.0; String axis "Y"; String ioos_category "Location"; String long_name "Latitude"; String standard_name "latitude"; String units "degrees_north"; } longitude { String _CoordinateAxisType "Lon"; Float64 actual_range -180.0, 180.0; String axis "X"; String ioos_category "Location"; String long_name "Longitude"; String standard_name "longitude"; String units "degrees_east"; } z { Float32 _FillValue NaN; Float32 actual_range -10898.0, 8271.0; Float64 colorBarMaximum 5270.0; Float64 colorBarMinimum -7737.0; String ioos_category "Bathymetry"; String long_name "z"; String positive "up"; String units "meters"; } NC_GLOBAL { String cdm_data_type "Grid"; String Conventions "CF-1.4"; String drawLandMask "under"; Float64 Easternmost_Easting 180.0; Float64 geospatial_lat_max 90.0; Float64 geospatial_lat_min -90.0; Float64 geospatial_lat_resolution 0.016666666666666666; String geospatial_lat_units "degrees_north"; Float64 geospatial_lon_max 180.0; Float64 geospatial_lon_min -180.0; Float64 geospatial_lon_resolution 0.016666666666666666; String geospatial_lon_units "degrees_east"; String GMT_version "4.5.1 [64-bit]"; String history "grdreformat ETOPO1_Bed_g_gmt4.grd ETOPO1_Bed_g_gmt4_coards.grd 2024-12-03T15:47:07Z https://www.ngdc.noaa.gov/thredds/dodsC/global/ETOPO1_Bed_g_gmt4.nc 2024-12-03T15:47:07Z https://pae-paha.pacioos.hawaii.edu/erddap/griddap/etopo1_bedrock.das"; String infoUrl "https://www.ngdc.noaa.gov/mgg/global/global.html"; String institution "NOAA National Geophysical Data Center (NGDC) Marine Geology and Geophysics (MGG) Division"; String ISO_Topic_Categories "elevation"; 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."; Int32 node_offset 0; Float64 Northernmost_Northing 90.0; String sourceUrl "https://www.ngdc.noaa.gov/thredds/dodsC/global/ETOPO1_Bed_g_gmt4.nc"; Float64 Southernmost_Northing -90.0; String summary "ETOPO1 is a 1 arc-minute global relief model of Earth's surface that integrates land topography and ocean bathymetry. It was built from numerous global and regional data sets, and is available in \"Ice Surface\" (top of Antarctic and Greenland ice sheets) and \"Bedrock\" (base of the ice sheets) versions."; String title "ETOPO1 Global Surface Relief: Bedrock"; Float64 Westernmost_Easting -180.0; } }
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.