More artefacts in interpolated DWD weather data in new EDK version
We found that rounded Artefacts occur more frequently after updating the German Drought Monitor with the new EDK Version end of March 2020 (the new edk version corrected the Bug in the linear equation, which was noticed after abandoning the imsl solver. Before that, the interpolation result was smoothed by the solver of the imsl library). We could identify a doubled station entry for one recurring artefact, but also found artefacts in other days at other spots. It might be only attributed to the dwd station network (very close stations with different precipitation record might mess up the kriging equations?). I will do some more investigations. If anyone finds similar behaviour, please report here.