Hey Nils,
thx for the quick reply.
Just to be sure:
I have the polygon for the overlapping area.
Then I have to import the TIFF fileU(GHS_POP_E2015_GLOBE_R2019A_54009_250_V1_0_18_3) , start the “Zonal STatistics” Tool where I have to define which Polygon (the overlapping area) I want to use as the zonal vector layer, right?
Best
Nico