HYSPLIT Forum: hysplitbbs.arl.noaa.gov

Hello HYSPLIT Team,

Is it possible to specify a depth different than 0.5 * PBL depth when running with ichem = 8, i.e. Stilt-mode? If so, how?

thank you,
Anna Karion

You will have to recompile the code to do that. Currently, the model has a fix value for the variable CONMIX which is set to 0.5 and is the one that determines the fraction of the PBL that will be used for the calculation.
In the code, look for the following part and modify the value of CONMIX:
...........
IF(ICHEM.EQ.8)THEN
CONMIX=0.50
WRITE(KF21,*)' STILT emulation mixed layer fraction for concentration grid: ',CONMIX
............