.. _FV3-DYAMOND-SUMMER: FV3 ======================================== Model description ----------------- `The GFDL Finite Volume Cubed-Sphere Dynamical Core (FV3) `__ is a scalable and flexible dynamical core capable of both hydrostatic and non-hydrostatic atmospheric simulations. The key components of FV3 can be found from `the official FV3 website `__. Contact ~~~~~~~ `Shiann-Jiann Linn `__, National Oceanic and Atmospheric Administration (noaa), USA Data structure -------------- Vertical ~~~~~~~~ The number of vertical levels is chosen as 79. The top of the model is at 3hPa. Both horizontal and vertical grid information can be found from the standard FV3 output files. Horizontal ~~~~~~~~~~ FV3 employs horizontal grid spacing of approximately 3.25 km (C3072), comprising 56,623,104 grid columns (3072 by 3072 by 6). Data access ----------- **Model Level Variables (3D), Output Interval: PT03H** ======== ============================= ===== =========== ==== Variable Description Units Level Freq u zonal wind m/s model level 3h v meridional wind m/s model level 3h w vertical wind m/s model level 3h temp temperature K model level 3h pres pressure Pa model level 3h qv specific humidity kg/kg model level 3h ql cloud water mass mixing ratio kg/kg model level 3h qi cloud ice mass mixing ratio kg/kg model level 3h qr rain mass mixing ratio kg/kg model level 3h qs snow mass mixing ratio kg/kg model level 3h qg graupel mass mixing ratio kg/kg model level 3h dp pressure thickness Pa model level 3h dz height thickness m model level 3h ======== ============================= ===== =========== ====   **3D Variables Interpolated to 31 Pressure Levels. Output Interval: PT03H** ======== ============================= ===== ============== ==== Variable Description Units Level Freq u_plev zonal wind m/s Pressure level 3h v_plev meridional wind m/s Pressure level 3h t_plev temperature K Pressure level 3h h_plev height m Pressure level 3h q_plev specific humidity kg/kg Pressure level 3h ql_plev cloud water mass mixing ratio kg/kg Pressure level 3h qi_plev cloud ice mass mixing ratio kg/kg Pressure level 3h qr_plev rain mass mixing ratio kg/kg Pressure level 3h qs_plev snow mass mixing ratio kg/kg Pressure level 3h qg_plev graupel mass mixing ratio kg/kg Pressure level 3h omg_plev omega Pa/s Pressure level 3h ======== ============================= ===== ============== ====   **Selected Horizontal Slices (2D), Output Interval: PT15M** +----------+-------------------+----------+----------------+-------+ | Variable | Description | Units | Level | Freq | +----------+-------------------+----------+----------------+-------+ | u10m | zonal wind at 10m | m/s | 10m | 15min | +----------+-------------------+----------+----------------+-------+ | v10m | meridional wind | m/s | 10m | 15min | | | at 10m | | | | +----------+-------------------+----------+----------------+-------+ | t2m | temperature at 2m | K | 2m | 15min | +----------+-------------------+----------+----------------+-------+ | q2m | specific humidity | kg/kg | 2m | 15min | | | at 2m | | | | +----------+-------------------+----------+----------------+-------+ | ps | surface pressure | Pa | surface | 15min | +----------+-------------------+----------+----------------+-------+ | intqv | vertically | kg/m^2 | - | 15min | | | integrated water | | | | | | vapor | | | | +----------+-------------------+----------+----------------+-------+ | intql | vertically | kg/m^2 | - | 15min | | | integrated cloud | | | | | | water | | | | +----------+-------------------+----------+----------------+-------+ | intqi | vertically | kg/m^2 | - | 15min | | | integrated cloud | | | | | | ice | | | | +----------+-------------------+----------+----------------+-------+ | intqr | vertically | kg/m^2 | - | 15min | | | integrated rain | | | | +----------+-------------------+----------+----------------+-------+ | intqs | vertically | kg/m^2 | - | 15min | | | integrated snow | | | | +----------+-------------------+----------+----------------+-------+ | intqg | vertically | kg/m^2 | - | 15min | | | integrated | | | | | | graupel | | | | +----------+-------------------+----------+----------------+-------+ | cldc | vertically | - | - | 15min | | | projected cloud | | | | | | cover | | | | +----------+-------------------+----------+----------------+-------+ | lhflx | surface latent | W/m^2 | surface | 15min | | | heat flux | | | | +----------+-------------------+----------+----------------+-------+ | shflx | surface sensible | W/m^2 | surface | 15min | | | heat flux | | | | +----------+-------------------+----------+----------------+-------+ | ustrs | surface zonal | N/s/m^2 | surface | 15min | | | momentum flux | | | | +----------+-------------------+----------+----------------+-------+ | vstrs | surface | N/s/m^2 | surface | 15min | | | meridional | | | | | | momentum flux | | | | +----------+-------------------+----------+----------------+-------+ | pr | total | kg/m^2/s | surface | 15min | | | precipitation | | | | | | (accumulated) | | | | +----------+-------------------+----------+----------------+-------+ | ts | ground | K | surface | 15min | | | temperature | | | | +----------+-------------------+----------+----------------+-------+ | qs | surface specific | kg/kg | surface | 15min | | | humidity | | | | +----------+-------------------+----------+----------------+-------+ | fsdt | TOA downward | W/m^2 | TOA | 15min | | | shortwave | | | | | | (accumulated) | | | | +----------+-------------------+----------+----------------+-------+ | fsut | TOA upward | W/m^2 | TOA | 15min | | | shortwave | | | | | | (accumulated) | | | | +----------+-------------------+----------+----------------+-------+ | flut | TOA upward | W/m^2 | TOA | 15min | | | longwave | | | | | | (accumulated) | | | | +----------+-------------------+----------+----------------+-------+ | fsds | surface downward | W/m^2 | surface | 15min | | | shortwave | | | | | | (accumulated) | | | | +----------+-------------------+----------+----------------+-------+ | fsus | surface upward | W/m^2 | surface | 15min | | | shortwave | | | | | | (accumulated) | | | | +----------+-------------------+----------+----------------+-------+ | flds | surface downward | W/m^2 | surface | 15min | | | longwave | | | | | | (accumulated) | | | | +----------+-------------------+----------+----------------+-------+ | flus | surface upward | W/m^2 | surface | 15min | | | longwave | | | | | | (accumulated) | | | | +----------+-------------------+----------+----------------+-------+ | cape | convective | J/kg | - | 15min | | | available | | | | | | potential energy | | | | +----------+-------------------+----------+----------------+-------+ | cin | convective | J/kg | - | 15min | | | inhibition | | | | +----------+-------------------+----------+----------------+-------+ | slp | sea level | Pa | Zero height | 15min | | | pressure | | | | +----------+-------------------+----------+----------------+-------+ | tm | 300-500hPa mean | K | 300-500 | 15min | | | temperature | | | | +----------+-------------------+----------+----------------+-------+ | rh | relative humidity | - | 500,850,700hPa | 15min | +----------+-------------------+----------+----------------+-------+ | vort | vorticity | 1/s | 850hPa | 15min | +----------+-------------------+----------+----------------+-------+ Initialisation and Boundary conditions -------------------------------------- Soil Initialisation ~~~~~~~~~~~~~~~~~~~ Initial land data (soil temperature, soil moisture, soil type, vegetation type, surface roughness, surface albedo properties, etc.) are from the GFS initial condition at 00Z August 1st, 2016. Input Data ~~~~~~~~~~ FV3 uses the IFS initial condition for atmosphere initialisation at August 1st, 2016. Treatment of SST and Sea Ice ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ FV3 uses the provided `IFS data (7 day means) `__.