[GRASS-user] NASADEM: new global 1 arcsec DEM

[Robert Nuske]

Moin Markus & Markus,

did you use the NASADEM further than importing it in GRASS?


I need a DEM for Germany + 10km Buffer. So, I thought NASADEM would be a
natural fit and am now trying to get a handle on this dataset.

The import with r.in.nasadem in a WGS84 Location just worked.
Thanks a lot metzm!

The NASADEM documentation states, that the height of the merged DEM
(NASADEM_HGT) is above EGM96 geoid and not WGS84 ellipsoid. I have no
clue how to get from there to UTM32 with a height reference comman in
Germany (DHHN92).


Do you have any solutions or hints how to proceed?


cheers
  robert

Am 18.02.20 um 22:36 schrieb Markus Metz:
> Hi all,
>
> NASA via lpdaac has released a new global DEM with 1 arcsec spatial
> resolution:
> https://lpdaac.usgs.gov/news/release-nasadem-data-products/
>
> "NASADEM extends the legacy of the Shuttle Radar Topography Mission
> (SRTM) by improving the digital elevation model (DEM) height accuracy
> and data coverage as well as providing additional SRTM radar-related
> data products. The improvements were achieved by reprocessing the
> original SRTM radar signal data and telemetry data with updated
> algorithms and auxiliary data not available at the time of the
> original SRTM processing."
>
> All layers of the NASADEM_HGT.001 product can be imported into GRASS
> with the addon r.in.nasadem:
> https://github.com/OSGeo/grass-addons/tree/master/grass7/raster/r.in.nasadem
>
> Enjoy!
>
> Markus M
>
> https://lpdaac.usgs.gov/products/nasadem_hgtv001/
>
>
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