The aster products were created from approximately 1. Save the files andor unzip them to your working directory. Introduction the advanced spaceborne thermal emission and reflection radiometer aster global digital elevation model gdem was developed jointly by the ministry of economy, trade, and industry meti of japan and the united states national aeronautics and space administration nasa. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. The gdem and astwbd are available for download from nasa earthdata and japan space systems. Example 296 copying files from a remote system ftp in this example, the user kryten opens an ftp connection to the system pluto, and uses the get command to copy a single file from the tmp directory. Hi, i have a shared hosting account and a dedicated server in different locations. Data can be downloaded using a browser or accessed directly from the ftp site. Aster global digital elevation model gdem overview the advanced spaceborne thermal emission and reflection radiometer. Aster represents a revolution in the remote sensing community because of the availability of its imagery and its superior resolution. The aster gdem covers land surfaces between 83n and 83s and is comprised of 22,702 tiles.
The first version of the aster gdem, released in june 2009, was generated. A lot more noise in the aster dem, and it also appeared to be less accurate. Global digital elevation model aster image gallery. This option turns on recursion and timestamping, sets infinite recursion depth and keeps ftp directory listings. Using aster gdem and srtm digital elevation models to generate contour lines over rugged terrain of makkah article pdf available july 2011 with 549 reads how we measure reads. It is still necessary to create an account, order the datasets through the user interface, and wait for the download link to be sent to you by email. Layover and shadow mask lsm, based on srtm cband and globe dem data. The gdal package can be very helpful for working with dems from other sources. The aster gdem data is available through the the nasa warehouse. How to recursively download a folder via ftp on linux.
The original raw open data from us geological survey srtm 1arc, nasa and meti aster gdem and european union eudem has been modified, adapted and overlaid to fill the gaps and provide a seamless and directly reusable global digital elevation model. The gdem is produced with 30 meter postings, and is formatted in 23,000 1 x 1. 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. The tiles selected for validation study were n35e6, n35e7, n36e6 and n36e7 fig. Some years ago ive downloaded srtm3 90m data from a anonymous ftp directory.
These tutorials cover many different data products across the earth science disciplines and different data. You need to use mget command as follows to copy multiple files from the remote ftp server to the local system. Srtm, aster as well as cartosat dem is available freely in 30m. However, i did find this in the attached pdf that came with the files. Agustin castillo has a nice short tutorial on how to download aster gdem tiles. Does anybody know a ftpadress where we can download srtm1. An ftp session to obtain the hpsc readme file from the lorado. The announcement was made at the united nations heads of.
How to recursively download a folder via ftp on linux closed. The advanced spaceborne thermal emission and reflection radiometer aster global digital elevation model gdem was developed jointly by the ministry of economy, trade, and industry meti of japan and the united states national aeronautics and space administration nasa. Pdf using aster gdem and srtm digital elevation models to. I also converted it to a geotiff in globalmapper just to make sure it got the coordinate data. I also need to download all tiles of aster gdem v2 for the whole earth coverage. The aster gdem is distributed as geographic tagged image file format geotiff files with geographic coordinates latitude, longitude. As implied, the maximum number of tiles in one unit directory is 25. Aster gdem dataset earlier this summer a new global digital elevation model data set derived from the aster satellite system was jointly released by japans ministry of economy, trade and industry meti and nasa the gdem dataset was created from the 1.
Nasa and japans joint operation was the birth of advanced spaceborne thermal emission and reflection radiometer aster. Aster reporter allows you to create custom sql reports based, schedule some reports, export it to xls, pdf, rtf, html andor csv. I will try using aster gdem data now all i have to figure out is how to download the file using an ftp. It is important to note that the connection to the dlr ftp server can only be. Aster reporter is written in java tapestry 3 spring and support many database with hibernate to perssist the objects.
Srtm vs gmted2010 dem data geonet, the esri community gis. Digital elevation data with srtm voids filled using accurate. The aster global digital elevation model gdem covers the earth s land surface between 83n and 83s latitudes. Dont get me wrong though, its a fantastic data set. Since it is in spanish, im reproducing it in english. To upgrade your browser, click on the icons below to go to the download page. The files will have spaces in the path, which you will have to fix before use in microdem copy the actual files to a new directory if you download files one at a time, you can get dted or geotiff in addition to bil, but each download takes multiple clicks. Srtm data, in hgt format, can be downloaded from here, but for some mountain. The 2009 and 2011 releases of a global aster gdem dataset, with 1 postings, may also have been noticed. Caelinux caelinux is an installable live dvd linux distribution dedicated to open source engineering with a f.
The aster gdem covers land surfaces between 83n and 83s and is comprised of. Data recipes are tutorials that include stepbystep instructions to help users learn how to discover, access, subset, visualize and use earth science data, information, tools and services. Srtm is probably of better quality than the aster gdem, but lower quality. Was difficult to veriy if the land actually did slope up, but as far as we could determine, it was wrong in the aster dem. Earth science data and information system esdis project, earth science projects division espd, flight projects directorate, goddard space flight center gsfc national aeronautics and space administration nasa. We saw the aster data sloping up, while the dted2 did not. Pdf using aster gdem and srtm digital elevation models. The gdem and astwbd are available for download from nasa earthdata and. Change home directory for a virtual ftp user on a server running pureftpd. Using wget to download select directories from ftp server. Dec 09, 2015 the aster products were created from approximately 1. Aster data geonet, the esri community gis and geospatial. This aster product is available at no charge for any user pursuant to an agreement between meti and nasa. It is a complete mystery why the nasa administrators make obtaining the data so cumbersome.
Note that you can only select aster tiles at once for download. The instrument has been collecting data since february 2000. Individuals and groups citing the earthdata search tool should use the following citation. Obtaining aster gdem data and converting to srtm1 for use. Aster is an imaging instrument that is flying on the terra satellite launched in december 1999 as part of nasas earth observing system eos. On september 23, 2014, the white house announced that the highestresolution topographic data generated from nasas shuttle radar topography mission srtm in 2000 was to be released globally by late 2015. In order to use earthdata search, you must upgrade your web browser.
How to recursively download a folder via ftp on linux closed ask question. How do you download a directory with ftp command by smclellan 10 years ago i need a command that will download a directory from an ftp site into a local directory of the same name. My situation was unique because i needed to set the home directory for the ftp user to something below the root web directory, which cpanel prevents you from doing because it would be a huge security risk. See how to open an ftp connection to a remote system. Jul 02, 2009 agustin castillo has a nice short tutorial on how to download aster gdem tiles. In the search box type aster gdem and select dataset note if you want a particular area this.
Does anybody know such a ftpdirectory to download srtm1 data. The aster gdem version 2 was validated against the 10 mmesh dem produced by the geographical survey institute gsi of japan. However i am having an issue with the bit depth of the provided data. The advanced spaceborne thermal emission and reflection radiometer aster is a japanese sensor which is one of five remote sensory devices on board the terra satellite launched into earth orbit by nasa in 1999. The tandemx 90m dem offered here for download is a product derived from. Advanced spaceborne thermal emission and reflection radiometer. The remote machine is the other one, the one that is the argument of the ftp command. They were located in central japan which covers sea. Mar 18, 20 i have been trying to use aster data to use as a dem in cityengine. The aster gdem product is available for free at the nasa wist website. If your system is using the automounter, the home directory of the remote system. Shown above is the aster gdem color shaded relief layer.
The gdex tool allows users to browse and download aster gdem data based on geographic areas of interest or predefined regions, including state, province, and county for the united states. Mar 04, 20 however, i did find this in the attached pdf that came with the files. To tylko jedna fraza 47 slow kluczowych, dla ktorych strona jest w rankingu. Data output from gdex is available in geotiff or arcascii format. They were located in central japan which covers sea level to very steep over 3000 m high peaks. When ordering aster gdem tiles, however, users may not see the entire gdem directory structure.
It is currently equivalent to r n l inf noremovelisting. This works on the ftp protocol and can be used to download files and. The srtm product is based on space shuttle endeavours sts99 mission in february 2000 using two radar antennas. Apr 18, 2016 ahora las imagenes aster son disponible sin cargo. For more information about the gdem, see the validation report.
A user interface for the standard file transfer protocol for arpanet, ftp acts as an interpreter on the remote machine. As a simple example, i know that i can download an entire directory using a command like. For the purposes of this web page, the local machine refers to the machine you are initially logged into, the one on which you type the ftp command. Im trying to understand how to use wget to download specific directories from a bunch of different ftp sites with economic data from the us government. How do you download a directory with ftp command techrepublic. Dec 09, 2009 at the end of the selection process, you will receive email instructions on downloading your data via ftp. How to copy files from a remote system ftp change to a directory on the local system where you want the files from the remote system to be copied. This is a simple search engine to search for digital elevation data from various sources on the internet. It is particularly suited to problems involving heat transfer, mechanics, fluids, and fluidstructure interactions. As part of this project emerged the aster global digital elevation model gdem. Essentially the ftp and pull directory to connect will look like.
The announcement was made at the united nations heads of state climate summit in new york. I recommend downloading the single zip file containing all your selected aster tiles. Srtm data is usually available direct from nasas website no longer ftp. If any commercial venture tried to conduct business using. Discussion created by bjebn on oct 17, 2011 latest reply on oct 19. Or you can download the zip file version by clicking on the lower of the two links. On october, nasa released the new aster gdem global dataset 30m and i essentially the ftp and pull directory to connect will look like. At the end of the selection process, you will receive email instructions on downloading your data via ftp. Nasa and japanocos ministry of economy, trade and industry meti announced the release of the aster global digital elevation model gdem on june 29, 2009. Aster global digital elevation model gdem mcmaster. A user interface for the standard file transfer protocol for arpanet, ftp acts as an interpreter on the remote.
Aster gdem boasted a global resolution of 90 meters with a resolution of 30 meters in the united states. If you want to download srtm data, those data are available at the us geological surveys eros data center for download. You can use a dem from other sources, including the aster gdem, but you would need to do your own preprocessing and mosaicking. Aster gdem global digital elevation model v002 select search for granules now begins the tedious part where there are over 22,000 aster gdem tiles that cover the globe however, the website only list 400 per page where there is an add all on page button but no add all option i.
61 228 1507 1078 97 64 1199 1605 339 204 1393 1356 1108 1501 184 238 1454 1026 964 750 1370 1397 9 1158 705 87 362 1599 567 1453 142 677 491 1404 1322 1296 336 838 1457 115 714 824 399 207 130