Here is one of the first views generated using the void fill data. Digital elevation models dem for nearly the entire globe, covering most of the countries of the world, are available for download on this site. The cgiar consortium for spatial information has released version 3 of their cleanedup srtm90 data, using contour interpolation and alternate data sources to fix voids and holes. The glcf is also a convenient way to browse and download srtm data, in geotiff format for more information, see the glcf srtm page. This data is currently distributed free of charge by usgs and is available for download from the national map seamless data distribution system, or the usgs. Our research is carried out by 15 research centers who are members of cgiar and is dedicated to reducing rural poverty, increasing food security, improving human health and nutrition, and ensuring more sustainable management of natural resources. Srtm 90m digital elevation database cgiar big data platform. The shuttle radar topography mission srtm is an international research effort that obtained digital elevation models on a nearglobal scale from 56s to 60n, to generate the most complete highresolution digital topographic database of earth prior to the release of the aster gdem in 2009. We advise you to read the entire article, especially if you are unsure about.
I am testing map 3d to see if it can do what i need. Which areas could be measured by the radar signals was specified by the orbit of the shuttle endeavour. Mapping freely available high resolution global elevation and vector data in grass. Open and free geospatial data from norway kartverket. Srtm consisted of a specially modified radar system that flew on board the space shuttle endeavour. Accessing srtm data thanks to the wonderful people at ciatcsi 1, you may download srtm data for the earths surface in a handy geotiff format from the cgiarcsi srtm download page, as shown below. The dem data on this site are version 3 of the csi srtm data with included improved clipping of shorelines using the srtm water bodies data swbd, and improved interpolation of voids areas using high resolution auxiliary data for us, canada, mexico, europe, australia, new zealand and gtopo30 global topographic data for other areas. As an integral part of the cgiar system, the cgiar system management board, comprised of 9 voting members, 1 exofficio nonvoting member and 4 active observers, is responsible for providing strategic direction and effective governance and leadership of the cgiar system organization. Consultative group on international agricultural research consortium for spatial information cgiar csi. Jul 25, 2019 the shuttle radar topography mission srtm obtained elevation data on a nearglobal scale to generate the most complete highresolution digital topographic database of earth. This work is the first study to report the lower accuracy of aster gdem2. This version of the srtm digital elevation data has been processed to fill data voids, and to facilitate its ease of use.
This data is currently distributed free of charge by usgs and is available for download from the national map seamless data distribution system, or the usgs ftp site. Jul 08, 2005 cgiarcsi geoportal 90m srtm dems processed the srtm 90m dems have a resolution of 90m at the equator, and are provided in mosaiced 5 deg x 5 deg tiles for easy download and use. External validation of the aster gdem2, gmted2010 and cgiar. It is the current dataset of choice for digital elevation model dem data since it has a fairly high resolution 1 arcsecond, or around 25 meters, has nearglobal coverage from 56s to 60n, and is in the public domain. Generally, accuracy is quite good, but is not always up to srtm standard. The nasa shuttle radar topographic mission srtm has provided digital elevation data dems for over 80% of the globe. Users should be aware that these data are intended for use with a geographic information system gis or other special application software, and are not. Unequalled partnerships network of more than 3,000 partners from national governments, academic institutions, global policy bodies, private companies and ngos.
The main source is still srtm, but where srtm data are void or anomalous there is input from gdem, landsat and various topographic maps. Accuracy assessment of the processed srtmbased elevation data by cgiar using field data from usa and thailand and its relation to the terrain characteristics y. In many areas srtm data provide the only topographic data set available. The shuttle radar topography mission srtm obtained elevation data on a nearglobal scale to generate the most complete highresolution digital topographic database of earth. The data is published for download here, but its sliced into thousands of small files, and i dont see an ftp option for more efficient downloading. Importing shuttle radar topography mission srtm elevation data.
Srtm in arcgis desktop geonet, the esri community gis. Shuttle radar topographic mission european soil data. I need some guidance on how to do it, if it can be done. This site is a clearinghouse for spatial datasets offered via ogc webservices i. Any download policies of the respective mirrors apply. Digital elevation data with srtm voids filled using. By cgiar csi january 4, 2019 february 8, 2019 continue reading cgiar consortium for spatial information cgiar csi is the geospatial science community of practice that facilitates cgiar s use of geospatial data and analysis in research. Elevation models from the srtm mission available free of.
May 11, 2014 as an example, i created the srtm 3 90 m dem of the entire british isles shown above in 4 minutes, 56. Height values extraction from srtm dem data geonet, the. Differences to the original srtm data can be substantial. Cgiar csi geoportal 90m srtm dems processed the srtm 90m dems have a resolution of 90m at the equator, and are provided in mosaiced 5 deg x 5 deg tiles for easy download and use. However for image data every data take that crossed a tile. The 3 arc second data is public to the world as well as the usa 1 arc scond. The dataset covers most of the globe, except polar regions, i. I want to import various digital elevation model data, such as shuttle radar topographic mission srtm. Thanks for contributing an answer to open data stack exchange.
Cgiar srtm is a heavily edited version of the original srtm data. The cgiar system management board provides a mechanism for cgiars research centers to. The original srtm dem finished grade data downloaded from. Im brand new to qgis and gis in general and am trying to use srtm data as elevation data for a condor soaring flight simulation scenery landscape. The cgiarcsi geoportal is now serving up processed srtm 90m global dem data. Loading shuttle radar topography mission maps in l3dt.
Please see the linked pdf files for further documentation. Cgiarcsi geoportal 90m srtm dems processed the srtm 90m dems have a resolution of 90m at the equator, and are provided in mosaiced 5. To select the area you wish to download, you may either leftclick on the tiles in the map, or else. There are 2 ways that srtm data can be used with pathloss 5. But avoid asking for help, clarification, or responding to other answers. The cgiarcsi geoportal is able to provide srtm 90m digital elevation data for. Oct 24, 2014 the shuttle radar topography mission produced the first detailed elevation model of most of the world. It also happens to offer their version 4 srtm which has the gaps filled. Shuttle radar topography mission srtm data is digital elevation data available for 80% of the world. Accuracy assessment of the processed srtmbased elevation. Srtm3 data are among the best global elevation data, with a grid resolution of approximately 90 m. If youre interested in images and visualizations created from srtm data, go to the image product description page. We would like to show you a description here but the site wont allow us. Aug 30, 2012 therefore it will probably hardly be feasible to fill all gaps in the global srtm data set using this method.
Consultative group on international agricultural research consortium for spatial information cgiarcsi. I want to extract the height values from the tile and join them with my vector file for eg. The national aeronautics and space administration nasa and the national geospatialintelligence agency nga participated in an international project to acquire radar data which were used to create the first nearglobal set of land elevations. Unfortunately this data set contains significant gaps in the coverage. Processed srtm 90m digital elevation data dem for the. For the dems, data from every acquisition that crossed a tile were mosaicked and combined, so there is only one data file for each 1 tile. More information on srtm can be found at the the shuttle radar topography mission web page or shuttle radar topography mission elevation data. Cgiars global network of 15 research centers contributes to an unrivalled mix of knowledge, skills and research facilities able to respond to emerging development issues.
Werner, 2001 and became accessible for free download over the internet e. At the time, srtm helped generate the most complete highresolution digital topographic database on earth. Still, some users may like the cgiar format, and that they have, in one way or another, filled all the srtm voids. The shuttle radar topography mission is a collaborative project between nasa, the national imagery and mapping agency nima, and the german and italian space agencies to map the elevation of a large part of the globe. These features simplify data access, in particular for largescale data analysis, and allow applications to create dems by automatically downloading and. Because dems for nonus locations are much harder to find, srtm data is useful for generating topographic maps of nonus locations.
The authors duly acknowledge the nasa distributed active archive centre daac and the national snow and ice data centre nsidc for making the modis snow albedo, modis lst, and srtm dem data freely available for download. The shuttle radar topography mission srtm was flown aboard the space shuttle endeavour february 1122, 2000. The shuttle radar topography mission produced the first detailed elevation model of most of the world. The shuttle radar topography mission srtm wikipedia article is a nasa mission conducted in 2000 to obtain elevation data for most of the world. Qgis clipping and reprojecting srtm data creates a huge. Also, close examination of some improved areas still shows some steep terracing and deep trenches, and that all srtm data that exists has been given priority, even where there are major phase errors in srtm data. Download scientific diagram srtm data search page to download dem data from cgiarcsi. Whether you are a professional developer or a regular user, this article provides you with information on how to download and use the norwegian mapping authoritys open and free maps and geospatial data.
Radio mobile rf propagation simulation software srtm. Srtm did not produce data for the northernmost latitudes or antarctica. The data for the srtm mission depict areas between the 60th. This data is provided in an effort to promote the use of geospatial science and applications for sustainable development and. Users should be aware that these data are intended for use with a geographic information system gis or other special application software, and are not directly viewable in a browser. Plugin for blender written in python, used to import srtm shuttle radar topography mission data as a mesh. Access to the data is governed by the draft delegated regulation on copernicus data and information policy. Nima used this topographic data from the 11day shuttle radar topography mission srtm for multiple applications, from developing navigation tools and supporting military operations, to geological and environmental purposes. South america is now complete and can be downloaded via the world coverage table. In february 2000, space shuttle endeavour started on an 11day srtm shuttle radar topography mission remote sensing mission. The srtm digital elevation data provided on this site has been processed to fill data voids and to facilitate its ease of use by a wide group of potential users. Information cgiarcsi and is available online through the cgiarcsi download database 38. See the africa image above and its caption at the pia04965.
In 2002 the nasa and usgs released a global data set of the earth surface geometry in 3 arc second 90m resolution obtained during a space shuttle mission in 2000. My target is to create shaded relief and to do some morphometry slope, aspect, flow lines. If anyone has a better suggestion or tool for exporting clipped srtm data to the. The difference in elevation, when compared to a bare earth dem is assigned to the clutter height. Voustianiouk b a center for international earth science information network ciesin, columbia university, 61 rt 9w, po box, palisades, ny 10964, usa.
It appears that the global 1arcsecond 30m srtm digital elevation model is now being made publicly available through, for example, the united states geological surveys earthexplorer site. Jan 20, 2020 the shuttle radar topography mission srtm obtained elevation data on a nearglobal scale to generate the most complete highresolution digital topographic database of earth. The shuttle radar topography mission srtm digital elevation dataset was originally produced to provide consistent, highquality elevation data at near global scope. The data was collected by a radar system flown onboard the space shuttle endeavour on from november 1122, 2000. I just finished developing a tool for whitebox gat that will automatically download shuttle radar topography mission srtm digital elevation models dems from the usgs srtm ftp site.
I looked at cgiars version 2 before, and wasnt satisfied with it. Srtm 90m digital elevation data from the chiar consortium for spatial information. Elevation models from the srtm mission available free of charge. If you want to download srtm data, those data are available at the us geological surveys eros data center for download. The data can be configured as a dem and used for all profile and background generation or it can be used in conjunction with a bare earth dem such as ned data in gridfloat format as a clutter database. Free for all nearglobal 30meter srtm elevation data. Here we use the model, overlain by two landsat satellite images, to simulate a flight around northern tanzania. Take a jaunt on the wild side as nasa jpl shuttle radar topography mission conducts an aerial safari of africa varied topography. Srtm data search page to download dem data from cgiarcsi. The cgiar system organization is an international organization headquartered in montpellier, france. Qgis clipping and reprojecting srtm data creates a huge file. Could you, please, give me some general guidelines, how to work with srtm data in arcgis desktop. Accuracy assessment of the processed srtmbased elevation data.
The eudem is a hybrid product based on srtm and aster gdem data fused by a weighted averaging approach and it has been generated as a contiguous dataset divided into 1 degree by 1 degree tiles, corresponding to the srtm naming convention. The new data are available for download from the usgs eros data center see public data distribution for details. When the space shuttle endeavour was launched into space on february 11, 2000, it carried on board a 60 meter long extendable mast and two radar antennas, one of which was mounted at the end of the mast. Srtm digital elevation data version 4 earth engine data. Srtm consisted of a specially modified radar system that flew onboard the space shuttle endeavour during an 11day mission in february of 2000. The dem data on this site are version 3 of the csisrtm data with included improved clipping of shorelines using the srtm water bodies data swbd, and improved interpolation of voids areas using high resolution auxiliary data for us, canada, mexico, europe, australia, new zealand and gtopo30 global topographic data for other areas. Thanks to radar technology, scientists were able to record earths elevation data during shuttle radar topography mission srtm independent of time of day and weather conditions. Over the course of 11 days scientists at the german. On september 23, 2014, the white house announced the coming availability of a nearglobal 30meter m version of the widely utilized elevation dataset, the shuttle radar topography mission srtm. Flown on a space shuttle mission during 2000, srtm elevation data covers our globe from 60 degrees north to 56 degrees south and was previously only. See an index map of the newly available fullresolution data.
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