FALL 2024 & SPRING 2025: Project Organization #14

andrewfagerheim · 2024-09-23T19:44:43Z

This issue contains meeting notes, action items, and updates starting September 2024. For similar issues from previous semesters see:

andrewfagerheim · 2024-09-23T20:11:12Z

23 Sept 2024: Meeting w @dhruvbalwada

Notes: parallelization

Use dask (that's built into xarray) to parallelize the interpolation process. If this automatic integration doesn't work, then we might need to use the dask library directly. Hopefully this is not the case, it would warrant further discussion.
Choose the profile dimension for chunking; this is the parallelizable dimension because our analysis treats each profile separately.
Ensure that multiple cores are being used by checking the argo dashboard. Start with simple test cases in the xarray documentation to make sure functionality is working as expected. Also check that the LEAP hub and gyre both give the same results to make sure results are not machine-dependent.

Notes: vertical coordinate

A broader note on using density as the vertical coordinate; there are two reasons to do this.
- The first is mechanistic---to remove the influence of internal waves stretching and squeezing isopycnals but not stirring the tracers.
- The second is analytic---to more readily visualize if bands of high variance are "sliding" along isopycnals into the interior in regions of deepwater formation, which would connect these variance results with ventilation.
The process for this coordinate transformation is as follows:
- C(z,x,t), ρ(z,x,t) --> C(ρ,x,t)
- C(ρ,x,t) --> C(zρ,x,t)
- Then either C(zρ,x,t) is used to calculate variance
- Or C(zρ,x,t) --> stretching of N2 is considered
- Then this metric would be used to calculate variance

Next steps:

andrewfagerheim added documentation Improvements or additions to documentation good first issue Good for newcomers labels Sep 23, 2024