WRF solar EPS

[vineethpk]

Dear WRF solar community
I'm a newbie to WRF solar EPS.

I'm trying to run WRF SOLAR EPS in the reference configuration shown in WRF-Solar® EPS | Research Applications Laboratory. and default STOCHPERT.TBL file.

I successfully ran few cases, But I could not find any output parameters corresponding to EPS.

What I understood that that if you run EPS system with 10ensemble members (nens=10 in namelist), there will be 10 different output variables for solar related parameters, like SWDOWN, SWDDNI etc. Please correct me if I'm wrong.

I can find solar related parameters (SWDOWN, SWDDNI etc from FARMS and Radiation schemes, (I modified registry entries)), but not any parameter specific to EPS.

I can find variables like PALBEDO(Time, num_stoch_levels, south_north, west_east) , PQVAPOR(Time, num_stoch_levels, south_north, west_east) etc

my namelist parametrs at &stoch section is shown below

&stoch
multi_perturb = 1
rand_perturb = 1
spdt = -1.0
pert_farms = .true.
pert_farms_albedo = 1.0
pert_farms_aod = 1.0
pert_farms_angexp = 1.0
pert_farms_aerasy = 1.0
pert_farms_qv = 1.0
pert_farms_qc = 1.0
pert_farms_qs = 1.0
pert_deng = .true.
pert_deng_qv = 1.0
pert_deng_qc = 1.0
pert_deng_t = 1.0
pert_deng_w = 1.0
pert_mynn = .true.
pert_mynn_qv = 1.0
pert_mynn_qc = 1.0
pert_mynn_t = 1.0
pert_mynn_qke = 1.0
pert_noah = .true.
pert_noah_qv = 1.0
pert_noah_t = 1.0
pert_noah_smois = 1.0
pert_noah_tslb = 1.0
pert_thom = .true.
pert_thom_qv = 1.0
pert_thom_qc = 1.0
pert_thom_qi = 1.0
pert_thom_qs = 1.0
pert_thom_ni = 1.0
pert_cld3 = .false.
pert_cld3_qv = 1.0
pert_cld3_t = 1.0
num_pert_3d = 15
perturb_bdy = 0
nens = 10
/

My question is

1) How the output parameters are formated in WRF SOLAR EPS? Would there be one output parameter for each member ?

2) How can I get or calculate GHI, (SWDOWN) or DNI (SWDDNI) corresponding to different EPS members ?

OR
Am I completely wrong with the sense and if I want 10 ensemble members, do I need conduct 10 model simulations with nens= 10 different values ?


Your help is highly appreciated
Thanks
Vineeth PK

 

[jimenez]

Your last sentence is the way to do it: If you want 10 ensemble members you need to run WRF-Solar EPS 10 times with different nens values
Pedro.

 

[yanf]

hi, i have a question. if i want to increase the number of ensemble members to 100 or even larger, I must change the "nens" in namelist.input to 2,3,4,...,100 each time? or could some automatic methods be use to realise 100 ensembles to simulate just at one time?