Hello together, I am working on liquid water profiles of clouds and would like to describe these profiles in relation to a reference profile. What is the best way to do this ? RMSE would equal positiv and negativ deviations. Is it better to use a correlation coefficient ? What is the best way, espacially when I want to find out profiles with the same behaviour / shape, which are just more or less shifted / just have a different mean value ? Thanks for your help in advance ! Klemens Dipl.-Geogr. Klemens Barfus Institute for Hydrology and Meteorology Technical University of Dresden Germany --