KnouandClaude Opus 5
e855d583e3
Split the pipeline documentation by purpose so each fact has one home: - docs/pipeline-plan.md keeps the plan, checklist, tracker, and guardrails - docs/decisions.md holds open decisions and the dated decision log - docs/reviews/ holds findings and tasks: one file per filter, plus 00-cross-filter.md for findings that span filters - scripts/common/README.md holds the shared-helper rules (formerly Phase 2) - filter-calculations.md now describes calculations only Filed findings 12-22 from a consistency audit of the app, docs, and scripts. Filter 1 (Köppen-Geiger): use "Köppen" with the umlaut in all prose, labels, docstrings, help text, and checker messages (finding 21), and correct the base build's "majority" docstring (finding 22). Filter 2 (annual avg temperature): record the adopted definition in filter-calculations.md §2: equally weighted 1991-2020 monthly normals, per WMO-No. 1203 and NOAA's 2020 methodology; area-weighted county means; blank unless all 12 months exist. Code changes for this filter are still pending. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
46 lines
2.6 KiB
Markdown
46 lines
2.6 KiB
Markdown
# Decisions
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Open decisions and a dated log of decided ones for the pipeline and the
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filter-by-filter review. The findings that led to them are in
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[reviews/](reviews/); the plan they serve is [pipeline-plan.md](pipeline-plan.md).
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## Open decisions
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| Decision | Options | Needed by |
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| --- | --- | --- |
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| Committing large intermediates | Commit metric files only, or also source summaries | Phase 3 |
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| Alaska and Hawaii coverage | Leave blank with a stated coverage gap, or add a source that covers them (for example Daymet or TerraClimate). NOAA nClimGrid and gridMET cover the contiguous U.S. only, so 29 AK and 5 HI counties are blank in filters 2–10; see finding 12 in [reviews/00-cross-filter.md](reviews/00-cross-filter.md) | Before Phase 3 |
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## Decided
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- **Köppen audit columns (2026-09-12):** `koppen.csv` stores the top class and
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share and the runner-up class and share alongside `koppenZone`.
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- **Köppen no-data fallback (2026-09-12):** a county with no valid raster cells
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is left blank, not assigned `Cfa`.
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- **Applying Köppen to the app CSV (2026-09-12):** wait until the app supports
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the Mixed class. Done 2026-09-13.
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- **Metric files (2026-09-13):** one CSV per metric under `data/metrics/`,
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starting with `koppen.csv`.
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- **Mixed climate display (2026-09-13):** diagonal stripes of each Mixed
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county's top two classes; see
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[koppen-mixed-display-plan.md](koppen-mixed-display-plan.md).
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- **Puerto Rico (2026-09-13):** off the map and out of every filter. The app
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already drops state FIPS 72; the data files keep the rows.
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- **Shared helpers (2026-09-13):** `scripts/common/` holds only code used by
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more than one data source, one topic per module; code shared within one data
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source stays with that source. Duplicates move during their own filter's
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review.
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- **Annual avg temperature month weighting (2026-09-15):** the annual value is
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the equally weighted mean of the 12 monthly normals, not weighted by month
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length. This follows WMO-No. 1203 (2017) §4.3.3(a), whose footnote
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recommends against day-length weighting, and NOAA's 1991–2020 Normals
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methodology (p. 2). Day weighting would have shifted values by only
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+0.03 to +0.13 °F. Closes finding 1.
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- **Annual avg temperature aggregation (2026-09-15):** area-weighted county
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means (sub-cell coverage fraction × cos(latitude)), matching Köppen. Closes
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finding 2 for this metric.
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- **Annual avg temperature completeness (2026-09-15):** a county is blank
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unless all 12 monthly values are present (WMO-No. 1203 §4.3.3).
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- **Annual avg temperature in Alaska and Hawaii (2026-09-15):** left blank for
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now; tracked as the cross-filter "Alaska and Hawaii coverage" open decision.
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