Close gaps found in a review of the documentation: - Track data/metrics/ and data/metric_sources.json in git so the data checker passes on a fresh clone (finding 23; decision logged) - State the Alaska and Hawaii coverage gap in the README limitations and extend finding 12 - File findings 24-26: the data-sources doc lacks gridMET and several pipeline commands; wettest/driest month are computed twice; solar GHI is written by the extreme-temperature apply step - Add the stale "fallback values" note to filter 2's tasks Tidy the document system: - Add docs/reviews/README.md with the numbering rules and a finding index - Rename koppen-mixed-display-plan.md to koppen-mixed-display.md and fix its stale Puerto Rico and "stage 5" text - Add the precipitation-month step to the README enrichment list - Describe the Current method / Previous method pattern in plan section 5 - Add CLAUDE.md with the project guardrails and doc layout Format filter-calculations.md so it renders on GitHub and in VS Code: inline math uses $...$, ranges use en dashes, and implementation references name functions instead of line numbers. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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32 lines
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# Filter 5: 90 °F+ heat-index days
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**Status:** Not started.
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**Data keys:** `humidHeatDays`, with the audit columns `humidHeatSourceFips`
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and `humidHeatFipsAdjustment`. Calculation:
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[filter-calculations.md](../filter-calculations.md) §5.
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## Findings
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**7. Heat Index days are a daily-extrema proxy.** Daily Tmax and daily minimum
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relative humidity are paired even though their observation times may differ.
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The result should not be described as an observed hourly maximum Heat Index.
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**8. Heat-year completeness is permissive.** Any year with at least one valid
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Tmax/RH pair is included in the equal-year average. A minimum valid-day rule
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would reduce low-biased partial-year counts.
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Cross-filter findings that affect this filter, in
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[00-cross-filter.md](00-cross-filter.md): 12 (Alaska and Hawaii not covered),
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13 (Lexington, VA uses Rockbridge County as a proxy), and 24 (no gridMET
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section in the data-sources doc).
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## Decisions
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None yet.
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## Tasks
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Not started; follow the per-filter review checklist in
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[pipeline-plan.md](../pipeline-plan.md) §5.
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