Geospatial Impact Estimates

Central Himalaya — experimental facet watch analyses

2,576 computed steep-glacier faces across the central Himalaya (82–89°E), colored by their 2026-season morning-radar anomaly ranked against 2020–25 history, with the validated detector run on the worst-ranked faces. Built by GEE batch export; a rank against the past, not a prediction.

/himalaya-facet-watch/

Langtang facet watch — live status map

580 computed steep-glacier faces in the Langtang region, each colored by its recent morning-radar anomaly ranked against 2020–25 history. Snapshot dashboard built on the SAR precursor analysis; a rank against the past, not a prediction.

/langtang-facet-watch/

Nepal glacier collapse — SAR precursor analysis

Six years of Sentinel-1 radar over the Langtang Lirung face that collapsed on 26 Aug 2026: a morning-pass melt anomaly visible four months out, a 45-face false-alarm test, and an offset-tracking null. One page, plain-language walkthrough with expandable technical panels.

/langtang-sar-precursors/

Analysis of EQ Damage Products: Presentation to A&A Cell 11 Aug 2026

Satellite building-damage products from the M7.5 Venezuela earthquake, evaluated against expert references: what arrived, what the products can and cannot support, and what actually works.

/slides/aa-cell-briefing-public/

Damage evaluation — A&A Cell briefingPassphrase

Five-slide briefing for the A&A Cell, 11 August 2026: the headline results of the damage product evaluation, with the full deck as backup slides.

/slides/aa-cell-briefing/

Damage evaluation — full results deckPassphrase

Six rapid building-damage products released after the M7.5 Venezuela earthquake, scored against three reference datasets chosen for their non-overlapping blind spots. The complete results deck.

/slides/damage-evaluation/

How satellite damage assessment can effectively support relief operations — scroll story v4Passphrase

For external review

/story-v4/

How satellite damage assessment can effectively support relief operations — scroll story v3Passphrase

Under internal review

/story-v3/

Damage evaluation — technical briefPassphrase

The condensed companion to the write-up: the three questions a coordinator would ask, answered with the headline figures, plus the full method appendix.

/brief/

Damage evaluation — technical write-upPassphrase

The manuscript behind the deck: matching basis, per-product scores, and the negative results that shaped the method.

/manuscript/

Vantor Open Data activation tracker

Which disasters Vantor (formerly Maxar) has released open imagery for, and how many pre- and post-event images each activation has. Rebuilt daily from the public STAC catalog, with a live-drift check on every page load.

/vantor-activations/

Flood labels — CEMS + UNOSAT viewer

Both flood-label corpora on one globe: 2,715 CEMS label sets from 283 activations (2012–) and 867 UNOSAT label sets from 180 flood and cyclone events (2014–), each with its acquisition interval. Water at acquisition and flood extent drawn separately; filter by source, region, country and period; step through an event acquisition by acquisition.

/flood-labels/