Hello Robson, although I did not completely understood your problem, here are a few points for a start. 1. Import WRF data in into a new location/mapset with its coordinate system matching WRF one; 2. Set computational region resolution to 1km (g.region res=1000 -a -p); 3. Run one of r.resamp.* tools (e.g. r.resamp.interp) to obtain smooth version of WRF in the new resolution set in the step #2. 4. ??? 5. Profit!
To fill ???, take a look at r.sun and r.sunmask. You will need a DEM to calculate the influence of topography. https://grass.osgeo.org/grass78/manuals/r.resamp.interp.html https://grass.osgeo.org/grass78/manuals/r.sun.html https://grass.osgeo.org/grass78/manuals/r.sunmask.html Don't hesitate to ask follow up questions after taking a look at r.sun and r.sunmask. Good luck, Māris. 2021-08-12 5:04 GMT+03:00, Robson Passos <[email protected]>: > Dear, > > I have irradiance data from the WRF meteorological model, the data is with > 3 km resolution, first I need to refine it to 1 km resolution and then > calculate the irradiance loss due to the shading of the terrain. > > Is there a tool that does this in GRASS? I would like to use an irradiance > raster as input and know the influence of topography on shading, similar to > what is presented in the solar potential atlases. > > If you can clarify this for me I would appreciate it. > > Thank you very much in advance, > Robson > _______________________________________________ grass-user mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/grass-user
