As you might have seen, the data in the aster gdem looks a little bit noisy. You download the data from a designated anonymous ftp site using a ftp client like filezilla. In the search box type aster gdem and select dataset note if you want a. Aster gdem coverage spans from 83 degrees north latitude to 83 degrees south, encompassing 99 percent of earths landmass. Since it is in spanish, im reproducing it in english.
The allinone, affordable gis software download now. Which dem data is better for elevation mapping, aster or. As an on demand product, the aster dem is available to users via ftppull only. Version 3 of the advanced spaceborne thermal emission and reflection radiometer aster global digital elevation model gdem is now available from nasas land processes distributed active archive center lp daac. The ministry of economy, trade, and industry meti of japan and the united states national aeronautics and space administration nasa jointly announced the release of the advanced spaceborne thermal emission and reflection radiometer aster global digital elevation model. Global mapper gridded elevation formats blue marble geographics. Change in the aster dem production software at the lp. Change in the aster dem production software at the lp daac. 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.
As an ondemand product, the aster dem is available to users via ftppull only. The aster gdem v3 maintains the geotiff format and the same gridding and tile structure as v1 and v2, with 30meter postings and 1 x 1 degree tiles. Agustin castillo has a nice short tutorial on how to download aster gdem tiles. Version 3 of the aster global digital elevation model gdem provides new features and sharper imagery. Obtaining aster gdem data and converting to srtm1 for use. Best source for aster gdem v2 and srtm data using the seamless server. Aster global digital elevation model aster gdem easytouse topographic information of the global terrain the ministry of economy, trade and industry of japan meti and the national aeronautics and space administration nasa are collaborating on a project to develop aster global digital elevation model aster gdem, a dem data which is acquired by a satelliteborne sensor aster to. Version 3 shows significant improvements over the previous release. Usgs seamless data distribution or more conveniently at the ftp site. The quality of the aster dem data is excellent, equivalent in resolution to usgs 30m sdts dem data and has coverage for a large.
The aster products were created from approximately 1. This interface attempts to ease the pain of downloading 30meter resolution elevation data from the shuttle radar topography mission click on yellow tiles to download their corresponding data tiles come as zipped srtmhgt files at 1arcsecond resolution 3601x3601 pixels in a latitudelongitude projection, downloaded from nasa servers. 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. After half hour we got an email with the ftp link to download the data. Yet we havent done the math and this noise might result from our blackwhite color stretch.