Tapio Schneider

Where are the results? We need the matrix of maximum allowable timestep and time to solution for ARS vs SSP, FCT vs CD, and possibly maximum number of Newton iteration....

What is the SSP baseline without FCT (i.e., central differences in the vertical)?

In the [Gardner et al. paper ](https://doi.org/10.5194/gmd-11-1497-2018), they found they needed multiple Newton iterations for SSP (but only one for ARS). SSP with CD should be stable with multiple Newton...

This goes in the right direction. @odunbar has more details of what we need. @glwagner and @ilopezgp also have relevant ideas and experiences on the calibration/UQ algorithm end (where we...

To add to what @odunbar says: 1. We will need multiple files in the end because we want to, for example, run the land model in isolation, and modify its...

We have used integers in the past, e.g., for different structural choices in parameterization schemes, or to specify the number of updrafts in the EDMF scheme.

> Still, regarding point 1. I would still argue for just 1 file for now - as this partitioning is maybe not so clear yet until we have everything together....

Flatter hierarchies may be better. And we do need vector-valued and array-valued parameters (e.g., to specify neural network weights).

We definitely do not want to trigger a recompile for every parameter change. Once you have a full ESM, this will become unwieldy. We want parameters to be runtime constants...

Some distinction here may help w.r.t. to when we do and don't need consistent parameters: 1. All "planet" parameters should be the same across model components. This includes thermodynamic constants,...