Hi, everyone!
I intend to conduct one-month WRF simulation to indicate the sensitivity of the percipitation to a revised radiation parameterization.
I have three issues about the input data and spin up time.
1. ECMWF or FNL?
Previous studies showd that the ECMWF reanalysis (0.25*0.25;0.75*0.75) is better than FNL (1*1), but some variables in FNL variable lists (Convection, Terrain elevation, Tropopause, etc.,) are not available in ECMWF variable lists. Even these variables are not necessary during model run, the model performance may be doubtful without these variables. I'm confused about which to choose.
2. NCEP GDAS (ds0833) and FNL (ds0832)
The horizontal resolution of NCEP GDAS (0.25*0.25; ds0833) is higher than that of the FNL (1*1; ds0832). Can I use the 6 hourly NCEP GDAS/FNL (**00.f00.grib2; **06.f00.grib2; **12.f00.grib2; **18.f00.grib2) as input data to do 1-month simulation?
3. Spin-up time
Is two weeks spin up time enough for 1-month simulation?
Thank you for any generous help!
I intend to conduct one-month WRF simulation to indicate the sensitivity of the percipitation to a revised radiation parameterization.
I have three issues about the input data and spin up time.
1. ECMWF or FNL?
Previous studies showd that the ECMWF reanalysis (0.25*0.25;0.75*0.75) is better than FNL (1*1), but some variables in FNL variable lists (Convection, Terrain elevation, Tropopause, etc.,) are not available in ECMWF variable lists. Even these variables are not necessary during model run, the model performance may be doubtful without these variables. I'm confused about which to choose.
2. NCEP GDAS (ds0833) and FNL (ds0832)
The horizontal resolution of NCEP GDAS (0.25*0.25; ds0833) is higher than that of the FNL (1*1; ds0832). Can I use the 6 hourly NCEP GDAS/FNL (**00.f00.grib2; **06.f00.grib2; **12.f00.grib2; **18.f00.grib2) as input data to do 1-month simulation?
3. Spin-up time
Is two weeks spin up time enough for 1-month simulation?
Thank you for any generous help!
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