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1. 1:24,000 Scale Digital Elevation Models (DEM) SDTS format only from the U.S. Geological Survey [USGS_DEM24K]
The DEM data for 7.5-minute units correspond to the USGS 1:24,000 and 1:25,000 scale topographic quadrangle map series for all of the United States and its territories. Each 7.5-minute DEM is based ...


2. 1:250,000 Scale Digital Elevation Models (DEM) from the U.S. Geological Survey [USGS_DEM250K]
A digital elevation model (DEM) consists of an array of elevations for ground positions that are usually at regularly spaced intervals. The 1-degree DEM provides coverage in 1- by 1-degree blocks ...


3. Digital Elevation Model (DEM) 7.5 Minute Quadrangle [DEM_7_5]
The 7.5-minute digital elevation model (DEM) data are digital representations of cartographic information in a raster form. The DEMs consist of an array of elevations for ground positions at regularly ...


4. Digital Elevation Model Data from 7.5-Minute Quadrangle Maps [7_MIN_DEM]
Produced by the U.S. Geological Survey (USGS), the 7.5-Minute Digital Elevation Model (DEM) data are digital representations of cartographic information in a raster form. DEMs consist of an ...


5. Digital Elevation Model: 15-Minute Quadrangle [DEM_15]
The 15-minute digital elevation model (DEM) data are digital representations of cartographic information in a raster form. The DEMs consist of an array of elevations for ground positions at regularly ...


6. Elevation Derivatives for National Applications (EDNA) [USGS_EDNA]
The Elevation Derivatives for National Applications (EDNA) is a multi-layered database derived from a version of the National Elevation Dataset (NED), which has been hydrologically conditioned for ...


7. GTOPO30 Hydro 1K [gtopo30_hydro_1k]
HYDRO1k is a geographic database developed to provide comprehensive and consistent global coverage of topographically derived data sets, including streams, drainage basins and ancillary layers derived ...


8. Global 30-Arc-Second Elevation Data Set [GTOPO30]
Digital elevation model (DEM) data are sampled arrays of surface elevations in raster form. A DEM provides elevation values in rows and columns, corresponding to a regular grid of points on the Earth's ...


9. Global Land Cover Characterization Program [USGS_GLCC]
The Global Land Cover Characterization Project was established to meet science data requirements identified by the International Geosphere and Biosphere Programme (IGBP), and the U. S. Global Change ...


10. Global Land Cover Test Sites [glcts]
The Global Land Cover Test Sites (GLCTS) project is a component of the National Aeronautics and Space Administration's Landsat Pathfinder Program. Pathfinder projects focus on the application of ...


11. HYDRO1k Elevation Derivative Database [HYDRO1k]
HYDRO1k is a geographic database developed to provide comprehensive and consistent global coverage of topographically derived data sets, including streams, drainage basins and ancillary layers derived ...


12. North American Landscape Characterization [NALC]
The North American Landscape Characterization (NALC) project is a component of the Landsat Pathfinder Program, which is part of a larger Pathfinder Program initiated by the National Aeronautics ...


13. Shuttle Radar Topography Mission (SRTM) Elevation 1 Arc Second Dataset Index [USGS_SRTM_Elev_1arcsec_Index]
The reference layer is for the Shuttle Radar Topography Mission (SRTM) elevation 1 arc second (30 meter) dataset. SRTM aboard the Space Shuttle Endeavour, launched on Feb. 11, 2000, used the same ...


14. The National Hydrography Dataset [USGS_EPA_NHD]
The National Hydrography Dataset (NHD) is a comprehensive set of digital spatial data that contains information about surface water features such as lakes, ponds, streams, rivers, springs and wells. ...


15. USGS Digital Orthophoto Quadrangles [USGS_DOQ]
A Digital Orthophoto Quadrangle (DOQ) is a computer-generated image of an aerial photograph in which the image displacement caused by terrain relief and camera tilt has been removed. The DOQ combines ...


16. USGS National Elevation Dataset [USGS_NED]
The U.S. Geological Survey has developed a National Elevation Dataset (NED). The NED is a seamless mosaic of best-available elevation data. The 7.5-minute elevation data for the conterminous United ...


17. Urban Dynamics Research Program: Analysis of Land Use Change in Urban Environments [USGS_UDRP]
The Urban Dynamics project looks at land use change in urban environments in order to provide a historical perspective of land use change and an assessment of the spatial patterns, rates, correlation, ...


18. Conterminous U.S. AVHRR Bi-Weekly Composites [USAVHRR]
The goal of the Conterminous U.S. AVHRR project is to compile a comprehensive time series data set of calibrated, georegistered daily observations and biweekly maximum normalized difference ...


19. Global Experimental Bi-Weekly Normalized Difference (GLEND) Vegetation Index [GLEND_NC00260]
The vigor and density of green vegetation can be monitored through examination of the spectral reflectance of the vegetation in the visible and near infrared areas of the electromagnetic ...


20. Greenness of the Conterminous U.S. [USGS_GREENESS]
Since 1989, the USGS EROS Data Center has been mapping the vegetation condition of the conterminous United States (lower 48 states) using satellite information. The vegetation condition maps, or more ...


21. Northern Great Plains AVHRR Data Set [NGP88]
The Northern Great Plains AVHRR data set is a compilation of daily NOAA-9 satellite observations acquired during the fall of 1987 and during the 1988 growing season. The daily observations have been ...


22. Sahel & NW Africa 14-Day NDVI Composites [SAHEL_NAFR]
Following the serious grasshopper outbreaks of 1986, a pilot program was defined between the U.S. Geological Survey and the U.S. Agency for International Development. The primary goal of this program ...


23. USGS State Cooperative Geophysical Research Program Consisting of Gravity and Magnetic Data [GEOPHYS]
MAGNETIC DATA Digital magnetic data were compiled from a diverse group of magnetic surveys. Digital data from aeromagnetic and shipborne magnetic surveys were compiled at different ...


24. Phenology Study of the Conterminous United States [USGS_EROS_Phenological]
The sensor responsible for the longest running series of NDVI products used for large-area phenology studies is carried aboard National Oceanic and Atmospheric Administration (NOAA) polar-orbiting ...


25. Shuttle Radar Topography Mission (SRTM) Elevation Data for the Island Nation of Sri Lanka [Tsunami_122604_SRTM]   PARENT DIF
The topography of the island nation of Sri Lanka is well shown in this color-coded shaded relief map generated with digital elevation data from the Shuttle Radar Topography Mission (SRTM). Two visualization ...


26. USGS Land Cover Trends Project [USGS_LCTP]
Land Cover Trends was a research project focused on understanding the rates, trends, causes, and consequences of contemporary U.S. land use and land cover change. The project spanned from 1999 to ...


27. 1:2,000,000-Scale Hydrologic Unit Maps [2MILHUC]
This data set contains hydrologic units (drainage basins) at a scale of 1:2,000,000 for the conterminous United States and Alaska. The attributes assigned to each unit follow the 8-digit Hydrologic ...


28. Landsat 8 Operational Land Imager (OLI) Thermal Infrared Sensor (TIRS) Pre-WRS-2 Version 1 [Landsat_8_OLI_TIRS_Pre-WRS-21]
The Landsat 8 OLI/TIRS Pre-WRS-2 data set contains nearly 10,000 scenes acquired by the Operational Land Imager (OLI) and/or Thermal Infrared Sensor (TIRS) sensors after launch (February 11, 2013) ...


29. Landsat 8 Operational Land Imager (OLI) Thermal Infrared Sensor (TIRS) Version 1 [Landsat_8_OLI_TIRS1]
The Operational Land Imager (OLI) and Thermal Infrared Sensor (TIRS) are instruments onboard the Landsat 8 satellite, which was launched in February of 2013. The satellite collects images of the Earth ...


30. Landsat Surface Reflectance Climate Data Record [Landsat_CDR_SR]
The U.S. Geological Survey (USGS) Earth Resources Observation and Science Center (EROS) is charged with prototyping systems and software to generate high-level data products from Landsat 5-7 inputs ...


31. Mineral Resources Data System Data Set [MRDS]
The Mineral Resources Data System (MRDS) data base, formerly known as the Computerized Resources Information Bank (CRIB), was developed by Dr. James A. Calkins and implemented by the U.S. Geological ...


32. National Geochronological Data Base [NGDB]
The National Geochronological Data Base (NGDB) was established by the United States Geological Survey (USGS) to collect and organize isotopic (also known as radiometric) ages of rocks in the United ...


33. Orbview-3 [orbview_3]
OrbView-3 satellite images were collected around the world between 2003 and 2007 by Orbital Imaging Corporation (now GeoEye) at up to one-meter resolution. The OrbView-3 data set includes 180,000 ...


34. Shuttle Radar Topography Mission (SRTM) Images [JPL_SRTM]   CHILD DIFs
Culminating more than four years of processing data, NASA and the National Geospatial-Intelligence Agency (NGA) have completed Earth's most extensive global topographic map. The mission is a collaboration ...


35. Space Shuttle Earth Observation Program Large Format Camera [shuttleLFC]
In October 1984, the Orbiter Camera Payload System's Large Format Camera (LFC) made its maiden voyage aboard the Challenger Shuttle vehicle. The LFC was used to acquire very high resolution images ...


36. Adopt A Pixel [Adopt_A_Pixel]
Adopt a Pixel is a ground-reference data acquisition system engaging citizen scientists to serve operational and research needs of the Landsat science community. CDI funding will support the establishment ...


37. SRTM 1 Arc-Second Global [SRTM_1_Arc-Second_Global]
The Shuttle Radar Topography Mission (SRTM) was a partnership between NASA and the National Geospatial-Intelligence Agency (NGA). Flown aboard the NASA Space Shuttle Endeavour (11-22 February 2000), ...


38. Shuttle Radar Topography Mission 1-arc second Global [SRTMGLOBAL1N]
The Shuttle Radar Topography Mission (SRTM) was flown aboard the space shuttle Endeavour February 11-22, 2000. The National Aeronautics and Space Administration (NASA) and the National Geospatial-Intelligence ...


39. USGS EROS ASTER Global Emissivity Dataset (GED) [USGS_EDC_ASTER_GED]
The Advanced Spaceborne Thermal Emission and Reflection radiometer Global Emissivity Database (ASTER GED) was developed by the National Aeronautics and Space Administration's (NASA) Jet Propulsion ...


40. Major Land Resource Areas [MLRA]
Often extending for thousands of acres, land resource units are geographic areas that are delineated by common patterns of soil, climate, water resources, and land use characteristics. ...


41. Watershed Boundaries - HydroSHEDS [geodata_2243]
HydroSHEDS (Hydrological data and maps based on SHuttle Elevation Derivatives at multiple Scales) provides hydrographic information in a consistent and comprehensive format for regional and global-scale ...


42. EO-1 Hyperion [USGS_EDC_EO1_Hyperion]
The EO-1 ALI is the first Earth-Observing instrument to be flown under NASA's New Millennium Program (NMP). The ALI employ s novel wide-angle optics and a highly integrated multispectral and panchromatic ...


43. Enhanced Thematic Mapper Plus (Landsat 7) [LANDSAT_ETM_PLUS]
The Landsat Enhanced Thematic Mapper Plus (ETM+) sensor onboard the Landsat 7 satellite has acquired images of the Earth nearly continuously since July 1999, with a 16-day repeat cycle. Landsat 7 ...


44. Landsat 8 [Landsat_8]
This data set is a raster file containing global information for bands 1 through 11 for Landsat 8 Operational Land Imager (OLI) and Thermal Land Imager (TIRS).


45. CORONA Satellite Photographs from the U.S. Geological Survey [CORONA_SATELLITE_PHOTOS]
The first generation of U.S. photo intelligence satellites collected more than 860,000 images of the Earth?s surface between 1960 and 1972. The classified military satellite systems code-named CORONA, ...


46. EO-1 (Earth Observing-1) Advanced Land Imager (ALI) Instrument Level 1R, Level 1Gs, Level 1Gst Data [USGS_EDC_EO1_ALI]
Advanced Land Imager (ALI) provides image data from ten spectral bands (band designations). The instrument operates in a pushbroom fashion, with a spatial resolution of 30 meters for the multispectral ...


47. Tri-Decadal Global Landsat Orthorectified ETM+ Reg Scene V1 [ETM]
The first generation of U.S. photo intelligence satellites collected more than 860,000 images of the Earth?s surface between 1960 and 1972. The classified military satellite systems code-named CORONA, ...


48. Cal/Val Mauritania 1 [cal_val_mauritania_1]
Earth surfaces with suitable characteristics have long served as test sites to verify the post launch radiometric calibration performance of satellite sensors. The U.S. Geological Survey (USGS), as ...


49. Cal/Val Mauritania 2 [cal_val_mauritania_2]
Earth surfaces with suitable characteristics have long served as test sites to verify the post launch radiometric calibration performance of satellite sensors. The U.S. Geological Survey (USGS), as ...


50. USGS Global Fiducials [usgs_global_fiducials]
The Global Fiducials Library (GFL) is a long-term archive of images from U.S. National Imagery Systems which represents a long-term periodic record for selected scientifically important sites. The ...


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