Prototype for embodied emissions dashboard

Scroll-driven D3 storyboard showing scope-decomposed emissions and tiered upstream/downstream Sankey flows for country–sector pairs. Currently holds data for top 50 of the 2022 OECD ICIOs, served via Cloudflare R2.

Deployed on Cloudflare Pages: supem-prototype.pages.dev

Quick start

• npm install — install dependencies
• npm run dev — local dev server
• npm run build — production build
• npx wrangler pages deploy dist — deploy to Cloudflare Pages

Data pipeline

• python -m pipelines.main compute --top-n 50 — compute data for top 50 pairs
• python -m pipelines.main upload — upload to R2

Structure

• src/main.js — app entry, scroll controller
• src/layers/ — D3 visualization layers (SplitBar, Sankey)
• pipelines/ — Python data pipeline (compute, layout, storage)
• functions/ — Cloudflare Pages Functions (R2 proxy)