NASADEM SRTM Image Mosaic Global 1 arc second V001

Metadata Updated: July 17, 2020

The Land Processes Distributed Active Archive Center (LP DAAC) is responsible for the archive and distribution of NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) Digital Elevation Model (DEM) version 1 (NASADEM_SIM) dataset, which provides global Shuttle Radar Topography Mission (SRTM) image mosaic data at 1 arc second spacing.

NASADEM data products were derived from original telemetry data from the Shuttle Radar Topography Mission (SRTM), a collaboration between NASA and the National Geospatial-Intelligence Agency (NGA), as well as participation from the German and Italian space agencies. SRTM’s primary focus was to generate a near-global DEM of the Earth using radar interferometry. It was a primary component of the payload on space shuttle Endeavour during its STS-99 mission, which was launched on February 11, 2000, and flew for 11 days. In addition to Terra Advanced Spaceborne Thermal and Reflection Radiometer (ASTER) Global Digital Elevation Model (GDEM) Version 3 data, NASADEM also relied on Ice, Cloud, and Land Elevation Satellite (ICESat) Geoscience Laser Altimeter System (GLAS) ground control points of its lidar shots to improve surface elevation measurements that led to improved geolocation accuracy. Other reprocessing improvements include the conversion to geoid reference and the use of GDEMs and Advanced Land Observing Satellite Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM) AW3D30 DEM, and interpolation for void filling.

NASADEM are distributed in 1° by 1° tiles and consist of all land between 60° N and 56° S latitude. This accounts for about 80% of Earth’s total landmass.

NASADEM_SIM data product layers include radar combined images and a NUM file associated with combined images. A low-resolution browse image showing the SRTM image mosaic elevation is also available for each NASADEM_SIM granule.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Created Date July 17, 2020
Metadata Updated Date July 17, 2020

Metadata Source

Harvested from NASA Data.json

Graphic Preview

Browse image for Earthdata Search

Additional Metadata

Resource Type Dataset
Metadata Created Date July 17, 2020
Metadata Updated Date July 17, 2020
Publisher LP DAAC
Unique Identifier C1546314791-LPDAAC_ECS
Maintainer
undefined
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Citation Archived by National Aeronautics and Space Administration, U.S. Government, LP DAAC. https://doi.org/10.5067/MEASURES/NASADEM/NASADEM_SIM.001.
Graphic Preview Description Browse image for Earthdata Search
Graphic Preview File https://e4ftl01.cr.usgs.gov//WORKING/BRWS/Browse.001/2018.09.13/NASADEM_SIM_n21e045.1.jpg?_ga=2.213603924.1391794668.1578923852-2066674673.1574795892
Harvest Object Id 8bccd348-8909-4ad7-b1f9-200ce37a3cfa
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2018-09-06
Homepage URL https://doi.org/10.5067/MEASURES/NASADEM/NASADEM_SIM.001
Language en-US
Metadata Type geospatial
Data Last Modified 2000-02-21
Program Code 026:001
Source Datajson Identifier True
Source Hash 74160101ae6fcce350ec5bc8f3f9afe9ad0f82ad
Source Schema Version 1.1
Spatial -180.0 -56.0 180.0 60.0
Temporal 2000-02-11T00:00:00Z/2000-02-21T23:59:59Z
Category geospatial

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