O1.5.2c Multi-year, high-topped, aquaplanet simulations without topography, clearsky radiation and 0-moment microphysics.

[akshaysridhar]

The Climate Modeling Alliance

Software Design Issue 📜

Purpose

Tracking SDI for multi-year high-top aquaplanet simulation and zero-moment microphysics and Monin-Obukhov surface fluxes.

Cost/Benefits/Risks

Cost / Schedule Risk: HPC outage during week of September 11. Restart files should help mitigate some issues with resource sharing on the central cluster.
Benefit: Stable configurations towards target AMIP simulations.

People and Personnel

• Lead: @akshaysridhar
• Collaborators: @szy21 (insolation / radiation setup)
• Reviewers: --> @szy21 @sriharshakandala @trontrytel

Components

• Target domain parameters: 55km lid, vertical spacing 30m (base), 3000m (top), sponge layer (35-50km), 200km horizontal resolution (16 horizontal elements, np = 3), 63 vertical levels.
• Config files for target simulation without topography, with 0M microphysics. Aquaplanet with gray radiation #1992
• Verification of simulation stability with topography given new resolution parameters (towards 1.5.2e)
• Time-varying insolation
• Clear-sky radiation
• Monin-Obukhov similarity theory for surface fluxes
• Cloud diagnostics

Results and Deliverables

• Configuration files for multi-year simulations aquaplanet, 0-M microphysics + clear-sky radiation. #2060
• Configuration files for multi-year simulations with 0-M microphysics + clear-sky radiation + time varying insolation with M-O surface fluxes. #2061

Multi-year refers to 1000 day simulations. Merged config files in buildkite pipeline will correspond to simulation end-times which are feasible in a 24hr wallclock-time (given current buildkite constraints).

Task Breakdown And Schedule

SDI Revision Log

(1) Restrict cases to exclude topography in this specific block of work. Microphysics (1M), all-sky radiation, and topography configurations will be tracked w.r.t the 1.5.2d, 1.5.2e OKRs. cc @szy21

CC

@tapios @simonbyrne @cmbengue @szy21

[szy21]

Thanks Akshay. I was thinking that the final deliverable of this milestone would be aquaplanet, clear-sky radiation, time-varying insolation, without topography. We can add topography and land in the AMIP milestone, and we can add cloud diagnostics and all-sky radiation with 1M microphysics later (as it is not correct now). Of course, feel free to include aquaplanet with topography simulation in the buildkite, but I would focus on the results of the above setup.

[akshaysridhar]

Noted, thanks. I'll revise the SDI to include the cases without topography as a step towards the topo+1M simulations. Topography will then only correspond to the 1.5.2d milestone in the OKR docs.

[szy21]

This SDI/milestone is done. The simulation is stable and the result looks good. It is added to the longrun buildkite:

ClimaAtmos.jl/.buildkite/longruns/pipeline.yml

Line 144 in baa37f0

- label: ":computer: aquaplanet (ρe_tot) equilmoist clearsky high resolution (nz63) hightop (55km) rayleigh sponge(35e3, 10) Float64 (time-varying insolation)"

. I am going to close this. Thanks @akshaysridhar!

[akshaysridhar]

Thanks @szy21