[GRASS-user] Is the SRTM dataset a DEM or a DSM?

Carlos "Guâno" Grohmann carlos.grohmann at gmail.com
Wed Jun 25 22:41:09 EDT 2008

IMO its a DEM, since the "z" value represents elevation, including
tree canopy and urban features. I personally don't like the term DSM
because it can be related with any kind of Surface, and DEM (and DTM,
when the "z" values represent the altitude) is related with the
_topographical_ surface.



On Wed, Jun 25, 2008 at 15:31, Nikos Alexandris
<nikos.alexandris at felis.uni-freiburg.de> wrote:
> In http://srtm.csi.cgiar.org/SRTMdataProcessingMethodology.asp it's
> called only DEM. In some papers it's called DSM.
> I'd rather say it's a DSM. But I would also like to know if there are
> objections ;-)
> Thank you,
> Nikos
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 Carlos Henrique Grohmann - Guano
 Geologist M.Sc - Doctorate Student at IGc-USP - Brazil
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