'prec_acc_nc' and convective vs. non-convective rainfall in output files

[tpartrid]

Hi!

I've been processing conus404-hourly-onprem to force an offline version of WRF-Hydro. I'm wondering if the conus404 prec_acc_nc variable contains both convective and non-convective rainfall from WRF. It was my understanding that these are separated within WRF output files, but I don't see a corresponding prec_acc_c variable within the conus404 dataset.

Thanks for your help!

[amsnyder]

@AndreasPrein - do you have any insights on this question? Or @pnorton-usgs?

[pnorton-usgs]

@tpartrid The partitioning of convective versus grid-scale precipitation only occurs when using one of the cumulus parameterization schemes. The 4-km grid spacing of the CONUS404 model allowed us to do convection-permitting runs meaning we did not use any of the convective parameterization schemes and instead allowed model physics to explicitly resolve convection. As a result the model does not output convective precipitation. As a result the PREC_ACC_NC variable contains the total amount of precipitation (convective + grid-scale) and, in the raw model output, the convective precipitation variable is zero for the entire model run.

[tpartrid]

Ah, thanks @pnorton-usgs! I had it backwards in my mind for some reason - that partitioning was done when resolving convection... thanks for the clarification.