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Quick reminder : general equations
(see yesterday's presentation by F. Hourdin)
Coriolis gravity
Sources
Entrainment
Detrainment
LNB
LCL
Unsaturateddowndraught
Emanuel scheme
Mixed saturateddraughts
Adiabatic ascent
Orography
PBL
Shallowconvection
ALE,oro,therm
ALP,oro,dyn
ALP
ALE
Q1
ALE
ALP
Deepconvection
DensityCurrents
Mali, August 2004F. Guichard, L. Kergoat
Cold poolDensity currentWake
Gust front
Lifting
Convective column
Anvil
Wake
Precipitating Downdraught
Lifting
Simulated wake propertiesHAPEX92: 21 Aug 1992 squall line case
TOGA-COARE: 22 Feb 1993 squall line case
z
T
q
In a model column there are structures of boundary layer scale
20 km
“The Thermal Model”:Each column is split in two parts:Ascending air from the surface and subsiding air around it.
The model represents a mean plume (the thermal) and a mean cloud.
200 km
3 km
e
d
w
Etc ...
Updraught Slow compensating subsidence
Turbulent Diffusion
Transport by the thermal plume model
In the model, this would be (- bils)