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
8 parameters are coming from the coupled ocean model (2 of them (sea water velocities) are available for the whole period and the remaining 6 since 12 June 2019):
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 are described in the table below
Field 3D
(note tendencies and fluxes are accumulated)Units Grib code*1 u-tendency from explicit dynamics m/s2 * s 162114 v-tendency from explicit dynamics m/s2 * s 162115 T-tendency from explicit dynamics K/s * s 162116 q-tendency from explicit dynamics kg/kg/s * s 162117 T-tendency from radiation K/s * s 162118 u-tendency from vert. diff + orog drag + surf processes m/s2 * s 162119 v-tendency from vert. diff + orog drag + surf processes m/s2 * s 162120 T-tendency from vert. diff + orog drag + surf processes K/s * s 162121 q-tendency from vert. diff + orog drag + surf processes kg/kg/s * s 162122 u-tendency of gravity wave drag
(including non-orographic)
m/s2 * s 162123 v-tendency of gravity wave drag
(including non-orographic)
m/s2 * s 162124 T-tendency of gravity wave drag (including non-orographic)
= dissipation wave breakK/s * s 162125 u-tendency from convection (deep+shallow) m/s2 * s 162126 v-tendency from convection (deep+shallow) m/s2 * s 162127 T-tendency from convection (deep+shallow) K/s * s 162128 q-tendency from convection (deep+shallow) kg/kg/s * s 162129 Precip. flux from convection liquid kg/(m2 s) * s 162130 Precip. flux from convection ice kg/(m2 s) * s 162131 T-tendency from cloud scheme K/s * s 162132 q-tendency from cloud scheme kg/kg/s * s 162133 ql-tendency from cloud scheme (stratiform) kg/kg/s * s 162134 qi-tendency from cloud scheme (stratiform) kg/kg/s * s 162135 *1 paramId in ECMWF's ecCodes