I'm working on WRF Chem and want to calculate CO2 concentrations only in the Planetary Boundary Layer (I mean, I want to calculate CO2 from surface to top of PBL). WRF (Wide Range Forecasting) How do I compute the PBL level? We have (PBLH: the height of PBL in WRF, but it doesn't tell us what the top level of PBL is as compared to all other levels in the model?). Like a payday loan at https://directloantransfer.com/ There are 37 vertical levels in my model. f I'll calculate the pressure weight of its level and the contribution of PBL concentration now that I know the level of PBL. How can I calculate the CO2 concentration in PBL height based on the weight of the PBL layer? Thank you for all of your help.