Urban Green Infrastructure

DISCLAIMER — A Caught Statistic, Real Replacements, No Policy Content

Why no UTAC/CREP/AFET bridge: not only because the cited literature already provides the necessary quantitative structure -- a deliberate choice. This project's highly speculative AFET/UTAC experiments must never stand in the way of climate/ecology topics being accessible and usable to people who don't work inside that construct and aren't looking for renormalization groups. Real, checkable science, without the burden of an unproven framework. See PACKAGE_REGISTRY.md's "Why no UTAC/CREP/AFET bridge in the climate/ecology series" (2026-08-31) in the GenesisAeon workspace root for the full canonical note.

Status: Real, independently verified science. ONE statistic from the source dialogue could NOT be verified and was excluded. NO German funding/legal/cost data. NO UTAC/CREP/AFET bridge.

The caught statistic

The source dialogue (P107und_fologende.txt, Grok's contribution) cited: "Nature 2026: Versiegelung reduziert Grundwasserneubildung um 30-50% ... Korrelation Urbanisierung <-> Recharge: r = -0.8971."

During verification (2026-08-16), this was searched extensively: - The general mechanism (soil sealing reduces groundwater recharge) is real and well-established -- confirmed via multiple independent sources (Frontiers in Water 2026, Copernicus Land Monitoring Service, several urbanization/groundwater studies). - A real 2026 Nature-family paper on urbanization and groundwater DOES exist (a Scientific Reports remote-sensing/GIS study of Nnewi, Nigeria), but it does not contain this correlation coefficient. - No paper anywhere in the searched literature reported r=-0.8971 for any urbanization/recharge relationship. Real reported correlation values

…

urban-green-infrastructure-utac

GenesisAeon Package 108 — urban green infrastructure hydrology. Companion to landscape-restoration-hydrology-utac (P107): the urban physical setting rather than the rural/riparian one. Deliberately has no UTAC/CREP/AFET bridge — see DISCLAIMER.md.

For a plain-language explanation of the same topic (German, no jargon, written for general audiences), see WHITEPAPER.md.

A caught statistic

The source dialogue for this package cited "Nature 2026: sealing " reduces groundwater recharge 30-50%, r=-0.8971." Despite extensive searching, neither figure could be independently verified against any real paper — a suspiciously precise, four-decimal correlation coefficient with no findable source is a classic fabrication/ misattribution signature. The underlying mechanism (sealing reduces groundwater recharge) is real; this package uses a real, confirmed, more modest figure instead (Grischek et al. 1996, Dresden: -23%). See DISCLAIMER.md for the full story.

What's real here

• Grischek et al. (1996) — surface sealing reduced groundwater
• recharge by 23% in Dresden, Germany. A real, confirmed, modest
• figure — used deliberately in place of the unverifiable "30-50%,
• r=-0.8971" claim above.
• Zheng, Zou, Lounsbury, Wang & Wang (2021, Resources, Conservation
• and Recycling)* — a real global synthesis: 2,375 samples from 75
• studies across 21 countries (2005–2020), average 62% per-event
• rainfall retention for green roofs (0–100% range, driven by rainfall
• intensity, substrate depth, coverage, climate, vegetation, season).
• Gregoire & Clausen (2011) — an earlier, independent meta-analysis
• of extensive green roofs specifically: 34–69% retention, average
• 56% — converges closely with Zheng et al.'s later, larger
• synthesis. independent_sources_agree_roughly() returns True.

Quickstart

bash pip install urban-green-infrastructure-utac

```python from urban_green_infrastructure_utac import ( dresden_recharge_reduction_pct, SEALING_CORRECTION_NOTE, GLOBAL_SYNTHESIS, EXTENSIVE_ROOF_META_ANALYSIS, independent_sources_agree_roughly, )

print(dresden_recharge_reduction_pct()) # 23.0 print(SEALING_CORRECTION_NOTE)

print(GLOBAL_SYNTHESIS.avg_retention_pct) # 62.0 print(EXTENSIVE_ROOF_META_ANALYSIS.avg_retention_pct) # 56.0 print(independent_sources_agree_roughly()) # True ```

Development

bash pip install -e ".[dev]" pre-commit install ruff check src tests mypy src pytest

Citation

See CITATION.cff and .zenodo.json.