Jago Strong-Wright

Hi all, I've attempted to uncomment and use the code and have put it [here](https://github.com/jagoosw/AppleAccelerate.jl/tree/jsw/fft), but it seg faults when you call `newfft`. Does anyone know if there has been...

Do we not want the substep length rather than the total time step length? For example on the cases where we're explicitly stepping a boundary condition they're getting stepped every...

Yeah this makes sense, and yes, I think in some cases we will need the last substep interval yes.

So that we can write code that works with both timesteppers I think it would make sense for `last_\Delta t` to be filled for AB2 as well?

Also the ground track has us down ranging 5000km so this could be a larger issue with how the frame transformations are being used in the plots.

Closed by #186

The change wasn't breaking to the initialisation function: https://github.com/CliMA/Oceananigans.jl/blob/c91df929ac50b5200b72118424db0ed3478faa9d/src/TimeSteppers/clock.jl#L32-L36 but here we directly make the struct. There is about to be another change to the clock so after that is...

Sorry it took me a while todo but I've just updated to the latest oceananigans now

Closed by #178

Hey @Atreyu-94, Just to let you know, we've just merged a working version of PISCES into main. We haven't been able to validate it against the Fortran implementations yet but...