Description
This is global topography data. The grid resolution is 30 seconds which is roughly one kilometer.
Land data are based on the 1-km averages of topography derived from the USGS SRTM30 grided DEM data product created with data from the NASA Shuttle Radar Topography Mission. GTOPO30 data are used for high latitudes where SRTM data are not available.
Ocean data are based on the Smith and Sandwell global 1-minute grid between latitudes +/- 81 degrees. Higher resolution grids have been added from the LDEO Ridge Multibeam Synthesis Project, the JAMSTEC Data Site for Research Cruises, and the NGDC Coastal Relief Model. Arctic bathymetry is from the International Bathymetric Chart of the Oceans (IBCAO) [Jakobsson et al., 2003].
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| OPeNDAP | Unknown | An OPeNDAP service for gridded data. Add different extensions (e.g., .html, .das, .dds) to the base URL for different purposes. | Open resource |
| ERDDAP-griddap | Unknown | ERDDAP's griddap service (a flavor of OPeNDAP) for gridded data. Add different extensions (e.g., .html, .graph, .das, .dds) to the base URL for different purposes. | Open resource |
| Make-A-Graph Form | Unknown | ERDDAP's Make-A-Graph .html web page for this dataset. Create an image with a map or graph of a subset of the data. | Open resource |
| Data Subset Form | HTML | ERDDAP's version of the OPeNDAP .html web page for this dataset. Specify a subset of the dataset and download the data via OPeNDAP or in many different file types. | Open resource |
| OGC-WMS | WMS | Open Geospatial Consortium Web Map Service (WMS) | Open resource |
| Background Information | HTML | Background information from the source | Open resource |
| Background Information | HTML | Background information from the source | Open resource |
| Background Information | HTML | Background information from the source | Open resource |
| Background Information | HTML | Background information from the source | Open resource |
| Background Information | HTML | Background information from the source | Open resource |