High Resolution Model Inputs
| Model |
Top |
# Vertical Levels |
Time Length |
Vertical/ Horizontal Res. |
Time Res. |
Target GCM Spacing |
Filter Method Notes |
| ICON |
75 km |
90 |
6 yrs |
5 km (r2b9) |
3 hrs |
100 km |
from Healpix grid, transform to spectral space and then follow same steps as ICON 2.5km simulation |
| ICON |
75 km |
90 |
1 week |
2.5 km (r2b9) |
3 hrs |
100 km |
Remap to Gaussian (n1024 via first order conservative remapping); In spectral space, taper to zero starting at 950km and completely zeroing out everything under ~550km period waves. |
| IFS |
80 km (0.01 hPa) |
137 |
4 months |
1.4 km |
3 hrs |
300 km |
Global Helmholtz decomposition with a fixed 2000 km spatial filter. |
| WRF |
0.01 hPa |
|
100 regional days |
3km, 1km (dx) /(~400m dz |
15 min |
100 km |
Similar to IFS data with Helmholtz decomposition, but using 700 km (selected case only for comparison with Gaussian filter) |