This ArcGIS service includes support for OGC WMS. It is the result of value added processing of the following data sources: (1) Global Digital Elevation Model (GTOPO30) represents gridded 30 arc seconds (+- 1 Km) elevation for the world. These data were by developed by the USGS EROS Data Center in 1996 from a variety of data sources. (2) Global Digital Elevation Model (ETOPO2) represents gridded 2 minute by 2 minute) elevation and bathymetry for the world. These data were derived from the National Geophysical Data Center (NGDC) ETOPO2 Global 2' Elevations data set from September 2001. Symbology and transparency settings were established using ArcGIS ArcMap software prior to exposing the service.

This ArcGIS service includes support for OGC WMS. It is the result of value added processing of the following data sources: (1) Global Digital Elevation Model (GTOPO30) represents gridded 30 arc seconds (+- 1 Km) elevation for the world. These data were by developed by the USGS EROS Data Center in 1996 from a variety of data sources. (2) Global Digital Elevation Model (ETOPO2) represents gridded 2 minute by 2 minute) elevation and bathymetry for the world. These data were derived from the National Geophysical Data Center (NGDC) ETOPO2 Global 2' Elevations data set from September 2001. Symbology and transparency settings were established using ArcGIS ArcMap software prior to exposing the service.