NASA Shuttle Radar Topography Mission Global 3 arc second V003

Description

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](https://earthdata.nasa.gov/about/competitive-programs/measures)) SRTM, which includes the global 3 arc second (~90 meter) product. The 3 arc second data was derived from the 1 arc second using averaging methods. (See Figure 3 in the User Guide) The NASA SRTM data sets result from a collaborative effort by the National Aeronautics and Space Administration (NASA) and the National Geospatial-Intelligence Agency (NGA - previously known as the National Imagery and Mapping Agency, or NIMA), as well as the participation of the German and Italian space agencies. This collaboration aims to generate a near-global digital elevation model (DEM) of Earth using radar interferometry. SRTM was the primary (and virtually only) payload on the STS-99 mission of the Space Shuttle Endeavour, which launched February 11, 2000 and flew for 11 days.The SRTM swaths extended from ~30 degrees off-nadir to ~58 degrees off-nadir from an altitude of 233 kilometers (km), creating swaths ~225 km wide, and consisted of all land between 60° N and 56° S latitude to account for 80% of Earth's total landmass. The SRTMGL3 data were generated from [SRTM1GL](https://doi.org/10.5067/MEaSUREs/SRTM/SRTMGL1.003) data that fall within that tile. These elevation files use the extension ".HGT", meaning height (such as N37W105.SRTMGL3.HGT). The primary goal of creating the Version 3 data was to eliminate gaps, or voids, that were present in earlier versions of SRTM data. In areas with limited data, existing topographical data were used to supplement the SRTM data to fill the voids. The source of each elevation pixel is identified in the corresponding [SRTMGL3N](https://doi.org/10.5067/MEaSUREs/SRTM/SRTMGL3N.003) product (such as N37W105.SRTMGL3N.NUM).The global 3 arc second SRTM product is also available in NetCDF4 format as the SRTMGL3_NC dataset with the source of each elevation pixel in the corresponding SRTMGL3_NUMNC product.Known Issues* Known issues in the NASA SRTM are described in the following publication: * Rodriguez, E., C. S. Morris, and J. E. Belz (2006), A global assessment of the SRTM performance, Photogramm. Eng. Remote Sens., 72, 249–260. https://doi.org/10.14358/PERS.72.3.249Improvements/Changes from Previous Version* Voids in the Version 3.0 products were filled with ASTER Global Digital Elevation Model (GDEM) Version 2.0, the Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010), and the National Elevation Dataset (NED).

Resources

Name Format Description Link
5 https://www.earthdata.nasa.gov/centers/lp-daac
5 https://e4ftl01.cr.usgs.gov%2FMEASURES%2FSRTMGL3.003%2F
5 https://search.earthdata.nasa.gov%2Fsearch%3Fq%3DC2763266377-LPCLOUD
5 https://doi.org%2F10.5067%2FMEaSUREs%2FSRTM%2FSRTMGL3.003
5 https://lpdaac.usgs.gov%2F
5 https://eospso.nasa.gov%2Fmissions%2Fshuttle-radar-topography-mission
5 https://lpdaac.usgs.gov%2Fdocuments%2F179%2FSRTM_User_Guide_V3.pdf
5 https://lpdaac.usgs.gov%2Fdocuments%2F13%2FSRTM_Quick_Guide.pdf
5 https://doi.org%2F10.1029%2F2005RG000183
5 https://opendap.cr.usgs.gov%2Fopendap%2Fhyrax%2FDP109%2FSRTM%2FSRTMGL3.003%2Fcontents.html
5 https://lpdaac.usgs.gov%2Fdocuments%2F642%2FDEM_Comparison_Guide.pdf
5 https://data.lpdaac.earthdatacloud.nasa.gov%2Flp-prod-public%2FSRTMGL3.003%2FN00E022.SRTMGL3.hgt%2FN00E022.SRTMGL3.jpg.2.jpg
5 https://search.earthdata.nasa.gov%2Fsearch%3Fq%3DC2763266381-LPCLOUD
5 https://search.earthdata.nasa.gov%2Fsearch%3Fq%3DC2763266390-LPCLOUD
5 https://appeears.earthdatacloud.nasa.gov%2F
5 https://opendap.cr.usgs.gov%2Fopendap%2Fhyrax%2FSRTMGL3_NC.003%2Fcontents.html
5 https://opendap.cr.usgs.gov%2Fopendap%2Fhyrax%2FSRTMGL3_NUMNC.003%2Fcontents.html
5 https://www.earthdata.nasa.gov%2Fcenters%2Flp-daac
5 SRTMGL3.003 https://e4ftl01.cr.usgs.gov/MEASURES/SRTMGL3.003/
21 SRTMGL3.003 https://doi.org/10.5067/MEaSUREs/SRTM/SRTMGL3.003
5 https://eospso.nasa.gov/missions/shuttle-radar-topography-mission
33 SRTM_User_Guide_V3.pdf https://lpdaac.usgs.gov/documents/179/SRTM_User_Guide_V3.pdf
33 SRTM_Quick_Guide.pdf https://lpdaac.usgs.gov/documents/13/SRTM_Quick_Guide.pdf
21 https://doi.org/10.1029/2005RG000183
33 DEM_Comparison_Guide.pdf https://lpdaac.usgs.gov/documents/642/DEM_Comparison_Guide.pdf
5 https://search.earthdata.nasa.gov/search?q=C2763266381-LPCLOUD
5 https://search.earthdata.nasa.gov/search?q=C2763266390-LPCLOUD
5 https://appeears.earthdatacloud.nasa.gov/
21 contents.html https://opendap.cr.usgs.gov/opendap/hyrax/SRTMGL3_NC.003/contents.html
21 contents.html https://opendap.cr.usgs.gov/opendap/hyrax/SRTMGL3_NUMNC.003/contents.html
22 N00E022.SRTMGL3.jpg.2.jpg https://data.lpdaac.earthdatacloud.nasa.gov/lp-prod-public/SRTMGL3.003/N00E022.SRTMGL3.hgt/N00E022.SRTMGL3.jpg.2.jpg
5 https://search.earthdata.nasa.gov/search?q=C2763266377-LPCLOUD
34 NOBM_DAY.R2017.sample.20150101.png https://docserver.gesdisc.eosdis.nasa.gov/public/project/NOBM/NOBM_DAY.R2017.sample.20150101.png
21 NOBM_DAY_R2017.html https://disc.gsfc.nasa.gov/datacollection/NOBM_DAY_R2017.html
5 https://reason.gesdisc.eosdis.nasa.gov/data/nobm/NOBM_DAY.R2017/
5 https://search.earthdata.nasa.gov/search?q=NOBM_DAY
21 contents.html https://reason.gesdisc.eosdis.nasa.gov/opendap/nobm/NOBM_DAY.R2017/contents.html
5 https://giovanni.gsfc.nasa.gov/giovanni/#dataKeyword=NOBM_DAY
33 README_NOBM_R2017.pdf https://reason.gesdisc.eosdis.nasa.gov/data/nobm/NOBM_MON.R2017/doc/README_NOBM_R2017.pdf
5 https://gmao.gsfc.nasa.gov/gmao-products/merra-nobm/
5 https://disc.gsfc.nasa.gov/information/howto

Tags

  • earth-science-topography-land-surface-terrain-elevation-digital-elevation-terrain-model-dem
  • earth-science-topography-land-surface-terrain-elevation
  • earth-science-radar-spectral-engineering-radar-imagery

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