Hi all!
I was just wondering if anyone is aware of any existing quarter (or tenth degree) ocean-sea ice models that have computed (online) heat budget diagnostics (advective, surface (swflx, lw_heat, etc.), mixing terms) at daily intervals. My Honours project’s focus is roughly southward of 55S.
My current analysis has been using monthly diagnostics, but it would be nice (if possible) to move to a higher temporal resolution.
Thanks,
Tom 
Hi Tom,
Sounds like a fun project!
Just to quickly mention, have you seen this discussion
/ aware of @sb4233’s work?
I think he might be outputting some high-res data of interest and given that @sb4233’s focus is tropical it might be complementary to yours?
Chris
Hi @cbull, I hadn’t seen that discussion. Thank you!
@sb4233, I am now wondering if you ended up running that with daily heat budget diagnostics?
Cheers
Tom
Hi @tom_schmaltz. I have tagged this outofscope for ACCESS-NRI support but hopefully the community can assist you further.
@Aidan I thought the outofscope tag was being replaced with a community-help tag?
@rmholmes did you ever save any daily heat budget diagnostics?
@Hangyum recently saved a few years of daily heat budget diagnostics for the ACCESS-OM2-01 RYF that he could point you to.
Possibly @olerieke also, though I’m not sure what frequency or region he saved.
Have you tried a search for the diagnostics you want through the Intake Catalog?
Yes it will be. Soon.
Hi @adele-morrison! Thank you for your response.
I did try – but I didn’t manage to find anything. I figured asking on here someone might know about some data that is not available through Intake.
I don’t believe it really has a major effect, but moving up in temporal resolution would be nice if possible.
Daily 3D budget diagnostics take up a lot of space (e.g. ~400GB/year for the 1/4-degree, meaning ~16TB over 40 years). I have 2 months worth of daily heat budget diagnostics (May and June 2023) in a simulation at /g/data/e14/rmh561/access-om2/archive/025deg_jra55_iaf_online_mlt_testing/ if that is at all useful. Sounds like @Hangyum’s data might be more useful to you.
As mentioned before, I have added diagnostics to MOM5 to bin the tracer budgets into the mixed layer, thereby allowing you to construct accurate (more accurate than you’d get with daily budget output) mixed layer tracer budgets without the need to output any 3D budget diagnostics at all. However, that work is still a ways off being finished because I can’t find the time to finish it.
Thanks @rmholmes – I might have a look at the data available for those couple of months (I think there is a marine heatwave of interest around that time).
I figured that the storage was the major bottleneck, and that it was probably unlikely to find much in the way of daily budget diagnostics.
Cheers
Tom
Hi @tom_schmaltz, yes I did some daily heat budget diagnostics south of 45S in ACCESS-OM2-01. The first one is the RYF Control case, with 1 year heat budget diagnostics, which is saved in /g/data/ik11/outputs/access-om2-01/01deg_jra55v13_ryf9091_ctrl_heat_budget. The second one is the CMIP6 perturbation experiment at the end of 21st century, which is saved in /g/data/ik11/outputs/access-om2-01/01deg_jra55v13_ryf9091_ssp585_th_heat_budget. There are 3 years of heat budget diagnostics in this experiment. Besides the heat budget terms, I also saved the daily dzt (would be helpful if you want to calculate the temperature tendency terms).
Hope that helps, and let me know if you have any questions!
Hey @rmholmes - possibly silly question - but can daily 3D budget diagnostics be put on tape and then be temporarily unpacked into some /scratch? If not is the challenge there the effort / babysitting required to stream it onto tape as it’s generated at run-time?
Yes definitely possible if someone wanted to put in that effort. However, for the specific application to mixed layer tracer budgets (which is what Tom is interested in) the new online binning system I’ve implemented will most likely be a better way to go as it is more accurate and much easier to work with (with a few caveats, as there are some limitations).
If there is sufficient interest maybe you could co-opt some others in the community to assist with finishing it?
Thank you @Hangyum. I might take a look at those!
Cheers
Tom
Hi Tom,
I can’t help with daily data unfortunately. But I have monthly means of the heat budget diagnostics for some years of the ACCESS-OM2-01 IAF cycle 2 south of 60S. Let me know if that’s of interest.