CDO

Hello everyone!

Is it possible to get a conditional selection of one variable depending on another variable in that same file while also using other selection criteria? More specifically: I am trying to select the u wind of all cloudy points (i.e. qc>0) within a specific lat/lon box and a specific time period (with both u and qc in one file).

I've already found cdo ifthen (which conveniently selects everything != 0 so that's very fitting for this example) but it seems to rely on two separate input files for the variable to be selected and the condition. I.e. something like: cdo ifthen FileWithPreselectedU FileWithQcMask Output. But what I want is more like: cdo ifthen (select[lon/lat/time/u] InputFile) (select[lon/lat/time/qc] ThatSameInputFile) Output.

Of course, I could first create these two files and then use ifthen, but that seems overly time- and disk-space-consuming to me. Is there another way?

Thanks,
Kevin