CDO

Hello, I have a more or less general question concerning the order of vertices (lon_vertices, lat_vertices) and how this is handled in cdo (cmor, remapcon, etc..). I hope i can explain myself clearly! I recognized, e.g., that if i cmorize data and let the cmor operator add those vertices for me, i get the first vertex in the "top left" ordered counterclockwise. However, it seems that CF-conventions require the frist vertex at the lower left (e.g., see also here: https://cfconventions.org/cf-conventions/cf-conventions.html#cell-boundaries). I created a short notebook with some plots to make my case (https://nbviewer.org/github/larsbuntemeyer/notebooks/blob/main/vertices-order.ipynb). The problem is with other CF-compliant tools that require cell boundaries relying on CF-conventions. I mostly use CORDEX datasets and i recognized that many models start with vertices at the top left. Maybe i misinterpret the CF-convention?

Thanks a lot!
Lars