Moist convective boundary layer (IHOP)
Case description
The International H2O Project (IHOP) case simulates a moist convective boundary layer based on the IHOP_2002 field campaign Weckwerth et al. [2004]. This case is used to evaluate boundary layer parameterizations under realistic large-scale forcing conditions, including geostrophic wind and large-scale vertical motion. It exists in two configurations: a 1D single-column mode and a 3D Large Eddy Simulation.
Warning
The 3D configuration requires MPI parallelization and the 1D configuration can only be run on a single core.
Note
You can find the workflow as well as the namelists and the scripts to launch this case here :
MNH-V6-0-0/examples/integration_cases/hpc/IHOP
1D : directory to prepare and run the 1D configuration
3D : directory to prepare and run the 3D configuration
PYTHON : directory to plot the figure
The different steps must be performed in the order indicated by the directory numbers.
Numerical set-up
Parameter |
1D |
3D |
|---|---|---|
Domain |
Cartesian flat domain |
Cartesian flat domain |
Horizontal grid |
1 x 1 pt (1D) |
256 x 256 pt |
Horizontal resolution |
1000 m |
50 m |
Vertical levels |
90 |
90 |
Parameter |
1D |
3D |
|---|---|---|
Integration length |
43200 s (12 h) |
43200 s (12 h) |
Time step |
60 s |
1 s |
Coriolis force |
Enabled |
Enabled |
Lateral boundary condition |
Cyclic |
Cyclic |
Scheme |
1D |
3D |
|---|---|---|
Turbulence |
TKEL (1D, BL89) |
TKEL (3D) |
Cloud microphysics |
LIMA |
LIMA |
Shallow convection |
EDKF |
NONE |
Deep convection |
NONE |
NONE |
Radiation |
NONE |
NONE |
Parameter |
Value |
|---|---|
Large-scale forcing |
Geostrophic forcing + large-scale vertical motion |
Parameter |
Value |
|---|---|
LES diagnostics |
Enabled |
Validation
Boundary layer height evolution
Heat and moisture budgets
Cloud fraction
Vertical velocity profiles