But avoid asking for help, clarification, or responding to other answers. 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. South america is now complete and can be downloaded via the world coverage table. This data is provided in an effort to promote the use of geospatial science and applications for sustainable development and. 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. 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 shuttle radar topography mission srtm obtained elevation data on a nearglobal scale to generate the most complete highresolution digital topographic database of earth. See an index map of the newly available fullresolution data. If anyone has a better suggestion or tool for exporting clipped srtm data to the.
There are 2 ways that srtm data can be used with pathloss 5. 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. Loading shuttle radar topography mission maps in l3dt. Mapping freely available high resolution global elevation and vector data in grass. Shuttle radar topographic mission european soil data. The shuttle radar topography mission srtm was flown aboard the space shuttle endeavour february 1122, 2000. Here we use the model, overlain by two landsat satellite images, to simulate a flight around northern tanzania.
Processed srtm 90m digital elevation data dem for the. Plugin for blender written in python, used to import srtm shuttle radar topography mission data as a mesh. Over the course of 11 days scientists at the german. Voustianiouk b a center for international earth science information network ciesin, columbia university, 61 rt 9w, po box, palisades, ny 10964, usa.
Werner, 2001 and became accessible for free download over the internet e. 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. Shuttle radar topography mission srtm data is digital elevation data available for 80% of the world. 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. External validation of the aster gdem2, gmted2010 and cgiar. Here is one of the first views generated using the void fill data. Any download policies of the respective mirrors apply. 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. The shuttle radar topography mission srtm digital elevation dataset was originally produced to provide consistent, highquality elevation data at near global scope. 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. 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.
It also happens to offer their version 4 srtm which has the gaps filled. If you want to download srtm data, those data are available at the us geological surveys eros data center for download. My target is to create shaded relief and to do some morphometry slope, aspect, flow lines. 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. In many areas srtm data provide the only topographic data set available. I am testing map 3d to see if it can do what i need. This site is a clearinghouse for spatial datasets offered via ogc webservices i. See the africa image above and its caption at the pia04965.
Thanks for contributing an answer to open data stack exchange. The data for the srtm mission depict areas between the 60th. Accuracy assessment of the processed srtmbased elevation data. Cgiarcsi geoportal 90m srtm dems processed the srtm 90m dems have a resolution of 90m at the equator, and are provided in mosaiced 5. Accuracy assessment of the processed srtmbased elevation. The glcf is also a convenient way to browse and download srtm data, in geotiff format for more information, see the glcf srtm page. 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. Access to the data is governed by the draft delegated regulation on copernicus data and information policy. 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. 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. In february 2000, space shuttle endeavour started on an 11day srtm shuttle radar topography mission remote sensing mission. 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. 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.
Consultative group on international agricultural research consortium for spatial information cgiar csi. The shuttle radar topography mission produced the first detailed elevation model of most of the world. The cgiar system organization is an international organization headquartered in montpellier, france. 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. I looked at cgiars version 2 before, and wasnt satisfied with it.
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. Aug 30, 2012 therefore it will probably hardly be feasible to fill all gaps in the global srtm data set using this method. 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. The main source is still srtm, but where srtm data are void or anomalous there is input from gdem, landsat and various topographic maps. Srtm 90m digital elevation database cgiar big data platform. Open and free geospatial data from norway kartverket. 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. Download scientific diagram srtm data search page to download dem data from cgiarcsi. We advise you to read the entire article, especially if you are unsure about. 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. Srtm consisted of a specially modified radar system that flew onboard the space shuttle endeavour during an 11day mission in february of 2000. The difference in elevation, when compared to a bare earth dem is assigned to the clutter height. Unfortunately this data set contains significant gaps in the coverage. For creating elevation maps i have used downloaded srtm dem files in 3dem of usgs, converted to utm projection and converted them to xyz using the freeware dm2win converter in the desired format.
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. Still, some users may like the cgiar format, and that they have, in one way or another, filled all the srtm voids. 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. Generally, accuracy is quite good, but is not always up to srtm standard. 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. 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. Srtm consisted of a specially modified radar system that flew on board the space shuttle endeavour. We would like to show you a description here but the site wont allow us. Srtm did not produce data for the northernmost latitudes or antarctica.
At the time, srtm helped generate the most complete highresolution digital topographic database on earth. 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. Qgis clipping and reprojecting srtm data creates a huge file. 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.
The cgiar system management board provides a mechanism for cgiars research centers to. Elevation models from the srtm mission available free of charge. Could you, please, give me some general guidelines, how to work with srtm data in arcgis desktop. 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. 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. Free for all nearglobal 30meter srtm elevation data. However for image data every data take that crossed a tile. 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. 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. Unequalled partnerships network of more than 3,000 partners from national governments, academic institutions, global policy bodies, private companies and ngos. Srtm digital elevation data version 4 earth engine data. 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. The shuttle radar topography mission srtm wikipedia article is a nasa mission conducted in 2000 to obtain elevation data for most of the world. 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. The cgiarcsi geoportal is able to provide srtm 90m digital elevation data for.
Which areas could be measured by the radar signals was specified by the orbit of the shuttle endeavour. To select the area you wish to download, you may either leftclick on the tiles in the map, or else. More information on srtm can be found at the the shuttle radar topography mission web page or shuttle radar topography mission elevation data. The cgiarcsi geoportal is now serving up processed srtm 90m global dem data.
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. The original srtm dem finished grade data downloaded from. It is the srtm dataset with the highest interpolation quality currently available. Please see the linked pdf files for further documentation. Because dems for nonus locations are much harder to find, srtm data is useful for generating topographic maps of nonus locations. 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. Elevation models from the srtm mission available free of. The new data are available for download from the usgs eros data center see public data distribution for details. Srtm in arcgis desktop geonet, the esri community gis.
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. I want to extract the height values from the tile and join them with my vector file for eg. Oct 24, 2014 the shuttle radar topography mission produced the first detailed elevation model of most of the world. 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. Srtm3 data are among the best global elevation data, with a grid resolution of approximately 90 m. The nasa shuttle radar topographic mission srtm has provided digital elevation data dems for over 80% of the globe.
Cgiar srtm is a heavily edited version of the original srtm data. Differences to the original srtm data can be substantial. The dataset covers most of the globe, except polar regions, i. These features simplify data access, in particular for largescale data analysis, and allow applications to create dems by automatically downloading and. Srtm 90m digital elevation data from the chiar consortium for spatial information. 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. 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.
I want to import various digital elevation model data, such as shuttle radar topographic mission srtm. Consultative group on international agricultural research consortium for spatial information cgiarcsi. 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. This version of the srtm digital elevation data has been processed to fill data voids, and to facilitate its ease of use. The data was collected by a radar system flown onboard the space shuttle endeavour on from november 1122, 2000. Radio mobile rf propagation simulation software srtm. Qgis clipping and reprojecting srtm data creates a huge. 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.
I need some guidance on how to do it, if it can be done. Importing shuttle radar topography mission srtm elevation data. Information cgiarcsi and is available online through the cgiarcsi download database 38. This work is the first study to report the lower accuracy of aster gdem2. If youre interested in images and visualizations created from srtm data, go to the image product description page. Digital elevation data with srtm voids filled using. The 3 arc second data is public to the world as well as the usa 1 arc scond. 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.
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