Scheduled Downtime
On Friday 21 April 2023 @ 5pm MT, this website will be down for maintenance and expected to return online the morning of 24 April 2023 at the latest

how WRF computes PBLH?

This post was from a previous version of the WRF&MPAS-A Support Forum. New replies have been disabled and if you have follow up questions related to this post, then please start a new thread from the forum home page.

jmralves

New member
Hello

I know that there are different methods to compute the PBLH, but I don’t know how WRF computes the PBLH.
I read somewhere that it depends on the PBL scheme used. In my case, I am using the GBM.
Do you know how WRF computes PBLH, with that scheme?

Thanks,
José
 
Jose,
Please take a look at the code phys/module_bl_gbmpbl.F, in which you can find the following piece of code:
Code:
       !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
       !     
       !     ---5--- Calculate the pbl height and length scale
       !     
       call pblhgt( &
            ! input variables &
       zqx,kts,kte, &
            nsquar,tke,presfl,rhoxfl,rcldb,exnerfl, &
            rttenx,thvx,thlx,thx,qwx,rexnerhl,qcx, &
            xfr,xlvocp,aone,atwo,rstbl,            &    
            ! output variables &
       bbls,pblx, &
            ktop,iconv,kmix2dx,kpbl2dx)
       !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

subroutine pblhgt can also be found in the same code.
 
Top