YOPP dataset consists of two different ECMWF outputs:
1) Operational ensemble forecast (ENS IFS)
- Medium-range forecast up to +360 hours (3-hourly up to 144 hours, then 6-hourly outputs)
- Archived in MARS as Control forecast (type=cf, stream=enfo, class=yp)
- 7 additional pressure levels to have a better vertical resolution in higher altitudes
2) Dedicated research run containing additional tendencies
Short-range forecast up to +48 hours (3-hourly outputs)
Archived in MARS as Forecast (type=fc, stream=oper, class=yp)
Research run that mimics very closely the operational control forecast of the ENS IFS was run from the 15.7. 2017 onwards
Additional tendencies from various physical and dynamical processes were archived on model levels (not available from ENS IFS run)
The differences for all parameters are on average small compared to the control forecast run, however, locally there can be differences in some parameters
The tendencies description: https://software.ecmwf.int/wiki/display/OIFS/How+to+control+OpenIFS+output
- List of the tendencies:
- U-tendency from dynamics
- V-tendency from dynamics
- T-tendency from dynamics
- q-tendency from dynamics
- T-tendency from radiation
- U-tendency from turbulent diffusion + subgrid orography
- V-tendency from turbulent diffusion + subgrid orography
- T-tendency from turbulent diffusion + subgrid orography
- q-tendency from turbulent diffusion
- U-tendency from subgrid orography
- V-tendency from subgrid orography
- T-tendency from subgrid orography
- U-tendency from convection (deep+shallow)
- V-tendency from convection (deep+shallow)
- T-tendency from convection (deep+shallow)
- q-tendency from convection (deep+shallow)
- Liquid Precipitation flux from convection
- Ice Precipitation flux from convection
- T-tendency from cloud scheme
- q-tendency from cloud scheme
- ql-tendency from cloud scheme
- qi-tendency from cloud scheme
- Liquid Precip flux from cloud scheme (stratiform)
- Ice Precip flux from cloud scheme (stratiform)