> For the complete documentation index, see [llms.txt](https://docs.alphageo.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.alphageo.ai/changelog.md).

# Changelog

Product and data release notes for the AlphaGeo platform, Data APIs, and Snowflake Native Application.

## Release date to be confirmed — Climate Risk and Resilience Index update

This release changes how several CRRI scores are calculated. Rating breakpoints, the 0–100 scales and the hazard roll-up are unchanged, so where a score moves it reflects a changed underlying value, not a changed threshold.

### What changed

* **Hurricane wind uses modelled return-period wind speeds.** Historical storm-track statistics are replaced by the CHAZ/CLIMADA coastal wind-hazard dataset. Six wind speeds are available per asset, scenario and horizon (`HU_WS_RP0010` to `HU_WS_RP1000`), and the score is computed from the 250- and 1,000-year values. A new `HU_CAT_RP1000` field gives the Saffir-Simpson category implied by the 1,000-year wind speed. Inland locations with no modelled tropical-cyclone wind return zero.
* **Damage functions are anchored to published evidence.** Flood depth follows the JRC global depth–damage table, with the shallow end from USACE guidance. Earthquake follows FEMA Hazus. Water stress ratings now line up with WRI Aqueduct 4.0 categories. Wildfire fuel, cyclone wind, coastal erosion, subsidence and extreme heat use published functional forms. Frequency and chronic-cost inputs such as hail days, landslide probability and cooling degree days use proportional curves. See [Indexing & Score Interpretation](/climate-resilience-suite/climate-risk-and-resilience-index/methodology-3-3-indexing.md) for the current score card.
* **Societal resilience no longer counts income twice.** Gross National Income is retired because the Human Development Index already carries an income component. Societal resilience is now the Human Development Index, gross fixed capital formation and the vulnerable-population share.
* **Values are read at each source's own resolution.** Flood depth, landslide probability, water stress and the adaptation layers are read at roughly 460 m, and urban form from Local Climate Zones at roughly 175 m, instead of being averaged to the 4 km climate grid. Saved assets are evaluated at their exact coordinates. Two addresses inside the same 4 km cell can now receive different flood, landslide, drought and resilience-adjusted scores.
* **Partially completed Remediation Checklists.** Unanswered questions now score as "No", as the methodology has always described. Only a deliberate "N/A" removes a strategy from the calculation. Assets with partly filled checklists will see a smaller adaptation benefit.

### Field changes in the Data APIs and downloads

| Change          | Fields                                                                                                                                          |
| --------------- | ----------------------------------------------------------------------------------------------------------------------------------------------- |
| Added           | `HU_WS_RP0010`, `HU_WS_RP0025`, `HU_WS_RP0050`, `HU_WS_RP0100`, `HU_WS_RP0250`, `HU_WS_RP1000`, `HU_CAT_RP1000`, `10Y_NPV`, `AAL`, `ADPT_ALPHA` |
| Removed         | `HU_RP`, `HU_CAT`, `HU_MAX_SPEED`, `HU_MEAN_SPEED`, `HU_AF`, `LOC_GNI`                                                                          |
| Newly populated | `HOTDAYS_ABV90P`, `HEAVY_PR_DAYS`                                                                                                               |

No request parameters or endpoints changed. A saved asset without coordinates now returns `400 Bad Request` rather than falling back to its stored cell.

### What to expect

Hurricane Wind, flood, drought, earthquake and coastal-erosion categories will move for many locations, and every Resilience-Adjusted Risk score shifts with the new societal-resilience composite. Overall percentile scores are re-ranked against the recalibrated distribution. A before-and-after comparison for your own portfolio is available on request from your account manager.


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