IHOP
Case description
The IHOP (International H2O Observing Phase) case simulates a moist convective boundary layer based on the IHOP field campaign. This case tests the boundary layer parameterization with realistic large-scale forcing.
Configuration
Parameter |
1D |
3D |
|---|---|---|
Category |
HPC cases |
HPC cases |
Dynamics |
3D with 1D turbulence |
3D LES |
Horizontal grid spacing |
1000 m (1x1) |
50 m (256x256) |
Vertical levels |
90 |
90 |
Integration length |
43200 s (12 hours) |
43200 s (12 hours) |
Time step |
60 s |
1 s |
Coriolis effect |
enabled |
enabled |
Turbulence |
TKEL (1D) |
TKEL (3D) |
Cloud scheme |
LIMA |
LIMA |
Deep convection |
NONE |
NONE |
Shallow convection |
EDKF |
NONE |
Radiation |
NONE |
NONE |
Declination
Configuration |
Description |
|---|---|
IHOP/1D |
Single column with 1D turbulence |
IHOP/3D |
Large-eddy simulation with 3D turbulence |
Steps
Step |
Script |
|---|---|
001_prep_ideal |
run_prep_ideal_case_xyz |
002_mesonh |
run_mesonh |
Specificities
Scientific specificities
Moist convective boundary layer
Large-scale forcing from IHOP campaign
Geostrophic forcing with vertical motion
Cloud microphysics (LIMA)
Shallow convection (EDKF for 1D)
Technical specificities
1D: single point domain
3D: 256x256 horizontal grid (12.8km x 12.8km)
90 vertical levels
Cyclic boundary conditions for 3D
High vertical resolution near surface
Validation
Boundary layer height evolution
Heat and moisture budgets
Cloud fraction
Vertical velocity profiles
Numerical ressources
1D: Single CPU (1 node, 1 core) 3D: 20 nodes, 2560 cores (MPI parallel)
References
IHOP_2002 field campaign (Weckwerth et al., 2004)