This is an shallow-water (i.e. barotropic) implemention of the quadratic-conservation dynamical core (dycore for short) developed in LASG lab at institute of atmospheric physics (IAP) by Bin Wang's team. This type of dycore can preserve total mass, total energy and some other conservation quantities exactly to machine precision level.
The total energy or quadratic form of IAP transformed variables is linked with computational stability, so when total energy is conserved, the long-term computing can be ensured which is key to climate simulation.
Currently, the implemention contains Arakawa C grid, second-order spatial difference satisfying antisymmetric condition, and second-order predict-correct time integrator, etc. More options will be added soon.
| Time integrator | Order | Implicit | Available |
|---|---|---|---|
| middle-point | 2nd | Yes | Yes |
| predict-correct | 2nd | No | Yes |
| runge-kutta | xxx | No | Not yet |
| leap-frog | 3rd | No | Not yet |
- Bin Wang
- Li Dong
- ...