A great tool: Glovis.

One of my favorite sites related to the topics of my career is GloVis (USGS Global Visualization Viewer). This is a tool that I got to know last year thanks to a geomatics course. The tool makes available a lot of georeferenced information. The information it offers includes digital elevation models, spectral signatures of objects, etc. In addition, the available information is of very high quality, the data has been taken by the most prestigious research projects in the world, and also the satellites used have a fantastic precision.

All this information can be used in official research projects. In addition there is information of previous dates! All this data collection has been headed by NASA.

It is difficult to find contras to such a good and free service, but I could say that perhaps the interface of the page is not so friendly.

This year I downloaded a lot of data from this page, to do different research tasks. To use it, you only need a free account.

Thank you for reading!