edu.ucar.gdex::d758000 eng; USA utf-8 dataset NSF NCAR Geoscience Data Exchange datahelp@ucar.edu https://gdex.ucar.edu NSF NCAR Geoscience Data Exchange The Geoscience Data Exchange (GDEX), managed by the Computational and Information Systems Laboratory (CISL) at NSF NCAR, contains a large collection of meteorological, atmospheric composition, and oceanographic observations, and operational and reanalysis model outputs, integrated with NSF NCAR High Performance Compute services to support atmospheric and geosciences research. download pointOfContact 2019-03-04T23:01:36Z ISO 19115 Geographic Information - Metadata ISO19115:2003/Cor 1 2006 https://doi.org/10.5065/A1Z4-EE71 https://www.usgs.gov/ https Related Resource #1 This is a USGS data set available in the USGS long term archive. USGS 30 ARC-second Global Elevation Data, GTOPO30 d758000 1997-07-24 publication Earth Resources Observation and Science Center, U.S. Geological Survey, U.S. Department of the Interior author NSF National Center for Atmospheric Research publisher GTOPO30 is a global raster digital elevation model (DEM) providing terrain elevation data with a horizontal grid spacing of 30 arc seconds (approximately 1 kilometer). GTOPO30 was derived from several raster and vector sources of topographic information. For easier distribution, GTOPO30 has been divided into tiles [http://rda.ucar.edu/datasets/ds758.0/docs/tiles.gif]. Detailed information on the characteristics of GTOPO30 including the data distribution format, the data sources, production methods, accuracy, and hints for users, is found in the GTOPO30 README [http://rda.ucar.edu/datasets/ds758.0/docs/readme.txt] file. GTOPO30, completed in late 1996, was developed over a three year period through a collaborative effort led by staff at the U.S. Geological Survey's Center for Earth Resources Observation and Science (EROS). The following organizations participated by contributing funding or source data: the National Aeronautics and Space Administration (NASA), the United Nations Environment Program and Global Resource Information Database (UNEP and GRID), the U.S. Agency for International Development (USAID), the Instituto Nacional de Estadistica Geografica e Informatica (INEGI) of Mexico, the Geographical Survey Institute (GSI) of Japan, Manaaki Whenua Landcare Research of New Zealand, and the Scientific Committee on Antarctic Research (SCAR). completed datahelp@ucar.edu pointOfContact notPlanned dataset https://gdex.ucar.edu/images/ds_logos/logo_usgs_182_72.png Logo thumbnail from URL png Binary dataset Resource Type 2021-03-30 revision 4.4 DataCite Metadata Working Group orginator resourceTypeGeneral GRIDDING METHODS U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-09-30 revision 24.9 NASA Global Change Master Directory orginator Valids List: Platforms EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-09-30 revision 24.9 NASA Global Change Master Directory orginator Valids List: Science and Services Keywords Creative Commons Attribution 4.0 International License None eng utf-8 elevation NSF NCAR Geoscience Data Exchange datahelp@ucar.edu https://gdex.ucar.edu distributor 290.861 https://gdex.ucar.edu/datasets/d758000/ https Dataset Description Related Link information https://gdex.ucar.edu/datasets/d758000/dataaccess/ https Data Access Related Link download none asNeeded