abnormal first value in LW output about wrf-suews HOT 8 CLOSED

@sunt05
I am trying to look at this issue, and trying to look at the main function of SUEWS that WRF get the outputs and give inputs. Is it subroutine suewsdrv?
If yes, I can see that SWDOWN is being inputted to this, but which one is LWDOWN to be used by SUEWS? (or LWUP as an output of SUEWS)

 SUBROUTINE suewsdrv(year, day, hour, minute, second, xtime, &
       T3D, QV3D, P3D, U3D, V3D, DZ3d, SWDOWN,  &
       PSFC, PREC, ht,                          &
       QN_SUEWS, AH_SUEWS, GRDFLX, HFX, QFX, LH, TSK, QSFC, chklowq,        &
       LAI_SUEWS,                               &
       albDecTr_SUEWS,                          &
       albEveTr_SUEWS,                          &
       albGrass_SUEWS,                          &
       DecidCap_SUEWS,                          &
       porosity_SUEWS,                          &
       GDD_SUEWS,                               &
       HDD_SUEWS,                               &
       state_SUEWS,                             &
       soilmoist_SUEWS,                         &
       surf_var_SUEWS,                          &
       landusef_SUEWS,                          &
       alb_SUEWS,                               &
       emis_SUEWS,                              &
       qn1_av_SUEWS,                            &
       qn1_s_SUEWS,                             &
       dqndt_SUEWS,                             &
       dqnsdt_SUEWS,                            &
       MeltWaterStore,                          &
       SnowAlb,                                 &
       WUDay,                                   &
       z0m_in,                                  &
       zdm_in,                                  &
       xlong, xlat, DT, DT_PREV, DX,            &
       ids, ide, jds, jde, kds, kde,            &
       ims, ime, jms, jme, kms, kme,            &
       its, ite, jts, jte, kts, kte)

from wrf-suews.

@sunt05
I am trying to look at this issue, and trying to look at the main function of SUEWS that WRF get the outputs and give inputs. Is it subroutine suewsdrv?

Yes.

If yes, I can see that SWDOWN is being inputted to this, but which one is LWDOWN to be used by SUEWS? (or LWUP as an output of SUEWS)

LWDOWN is not used by SUEWS in this version but calculated based on air temperature and humidity.
SUEWS output TSK is used for calculating LWUP.

 SUBROUTINE suewsdrv(year, day, hour, minute, second, xtime, &
       T3D, QV3D, P3D, U3D, V3D, DZ3d, SWDOWN,  &
       PSFC, PREC, ht,                          &
       QN_SUEWS, AH_SUEWS, GRDFLX, HFX, QFX, LH, TSK, QSFC, chklowq,        &
       LAI_SUEWS,                               &
       albDecTr_SUEWS,                          &
       albEveTr_SUEWS,                          &
       albGrass_SUEWS,                          &
       DecidCap_SUEWS,                          &
       porosity_SUEWS,                          &
       GDD_SUEWS,                               &
       HDD_SUEWS,                               &
       state_SUEWS,                             &
       soilmoist_SUEWS,                         &
       surf_var_SUEWS,                          &
       landusef_SUEWS,                          &
       alb_SUEWS,                               &
       emis_SUEWS,                              &
       qn1_av_SUEWS,                            &
       qn1_s_SUEWS,                             &
       dqndt_SUEWS,                             &
       dqnsdt_SUEWS,                            &
       MeltWaterStore,                          &
       SnowAlb,                                 &
       WUDay,                                   &
       z0m_in,                                  &
       zdm_in,                                  &
       xlong, xlat, DT, DT_PREV, DX,            &
       ids, ide, jds, jde, kds, kde,            &
       ims, ime, jms, jme, kms, kme,            &
       its, ite, jts, jte, kts, kte)

from wrf-suews.

I see. It seems that TSK is fine for the first time step (from outputs). Both GLW and SWUPB are zero for the first time step, and since SUEWS does not use GLW at all, there should be another reason for GLW to be zero for the firs time step, right?

from wrf-suews.

Actually, now that I am looking at all radiation outputs, it appears that all Radiation outputs are zero for the first time step. It was not obvious at the beginning since the SW radiations are zero for the start of the run which is mid-night.

from wrf-suews.

But LW-related components should be non-zero at all times. Weird.

Is this happening only in WRF-SUEWS mode or a general case in WRF v4?

from wrf-suews.

I need to check that! Not sure if I have the output from just WRF4. Will run it

from wrf-suews.

It seems that for WRFV4 also we get the first written time step as zero. I have not run for WRFV3 with the same setting, but we can be sure that this not the problem of coupling at this point!

from wrf-suews.

Great to know.
Then we are settled down on this, at least for the coupling work.

from wrf-suews.