.. _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) `__.