HIGH RESOLUTION REFERENCE SOLUTIONS. CASES 5 AND 6

For cases 5 and 6, high resolution model runs have been performed. These solutions are used as references for the Icosahedral Shallow Water Prototype [1,2,3].

CASE 5: T426 REFERENCE SOLUTION

case5hr.tar

This is a file with a case 5 run with these characteristics:

Spectral truncation	T426
Time step	90 seconds
Lenght of the run	15 days
Diffusion coefficient	4.97 x $10^{11}$ $m^{4}/s$ (e-folding time 28 hours)

This file contains the NetCDF file with the spectral coefficients, the namelist used to run the STSWM and the file with the time series for the global integrals of mass,total energy, relative vorticity, divergence, and potential enstrophy.

The diffusion coefficient used is the one that correspond to an e-folding time of 28 hours (Table 1 in the [previous section] ).

case5fsp.tar

This file contains, for the same case 5 T426 run, files with the height, wind and relative vorticity fields, and kinetic energy spectra for days 0, 5, 10 and 15.

Figure 1: T426 Case 5 run, height field at day 15

Figure 2: T426 Case 5 run, vorticity field at day 15

CASE 6: T511 REFERENCE SOLUTION

download case6hr.tar

This is a file with a case 6 run with these characteristics:

Spectral truncation	T511
Time step	90 seconds
Lenght of the run	15 days.
Diffusion coefficient	3.4 x $10^{12}$ $m^{4}/s$ (e-folding time 2 hours)

This file contains contains the NetCDF file with the spectral coefficients, the namelist used to run the STSWM and the file with the time series for the global integrals of mass,total energy, relative vorticity, divergence, and potential enstrophy.

With the diffusion coefficient that correspond to an e-folding time of 28 hours (Table 1, [previous section] ), the vorticity field for case 6 was very noisy. After studing the kinetic energy spectra and the vorticity field of T511 case 6 runs with different e-folding times, a 2 hours e-folding time has been adopted as a good compromise in the present T511 case 6 reference run. The diffusion coefficient that correspond to this 2 hours e-folding time is 3.4 x $10^{12}$ $m^{4}/s$.

download case6fsp.tar

This file contains, for the same case 6 T511 run, files with the height, wind and relative vorticity fields, and kinetic energy spectra for days 0, 5, 10 and 15.

Figure 3: T511 Case 6 run, height field at day 10

Figure 4: T511 Case 6 run, vorticity field at day 10