[Qgis-user] Creating ensemble and aggregates from netCDF

[Thiemo Kellner]

Hi all

I have downloaded climate forecast raster data in NetCDF 3.6 format  
(https://nedlasting.nve.no/klimadata/kss) for a series of models and  
time resolution of one day. The data is one file per model.  
Eventually, I would like to have an ensemble file with aggregated data  
over the time axis, e.g. monthly or quarterly. Maybe it gets clearer  
when I just list some names of the files I have:

rcp85_CNRM_CCLM_RR_daily_mm_2100.nc
rcp85_CNRM_RCA_RR_daily_mm_2100.nc
rcp85_EC-EARTH_CCLM_RR_daily_mm_2100.nc

I expect all the files to have the same extent and resolution;  
gdalinfo excerpts of arbitrary two files https://pastebin.com/UtxXDDGp  
support my assumption.

Being a complete noob, I assume that the ensemble would just be the  
arithmetic average, but I do not know how to average the "payload"  
axis of rasters over different layers nor over its time series/bands.

I have not been able to find guidance on ecosia.org or the  
documentation and also tried to employ PostGIS for this, but I am  
stuck there as much as I am with QGIS.

I heard that this was possible only with GRASS GIS but that its  
integration into QGIS was behind the required GRASS GIS version to do  
ensembles. Is that true and if so, would it be possible to place a  
bounty to have someone do the required integration?

I would appreciate guidance very much.

Kind regards

Thiemo

-- 
S/MIME Public Key: https://oc.gelassene-pferde.biz/index.php/s/eJuAUFONag6ofnH
Signal (Safer than WhatsApp): +49 1578 7723737
Threema (Safer than WhatsApp): A76MKH3J
Handys: +41 78 947 36 21 | +49 1578 772 37 37


-- 
S/MIME Public Key: https://oc.gelassene-pferde.biz/index.php/s/eJuAUFONag6ofnH
Signal (Safer than WhatsApp): +49 1578 7723737
Threema (Safer than WhatsApp): A76MKH3J
Handys: +41 78 947 36 21 | +49 1578 772 37 37
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 4001 bytes
Desc: not available
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20210129/7abe0af8/attachment.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 4001 bytes
Desc: S/MIME Signature
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20210129/7abe0af8/attachment-0001.bin>