Umbra open-data SAR

Browse and search Umbra's open SAR archive from your browser -- no account, no install, no data download.

updated 2026-08-21

What SAR change looks like

Each image composites repeat passes of one site onto a shared grid: ground that stayed put reads gray, and anything that appeared or vanished between passes is tinted by when it happened. Rendered ahead of time from the open catalog — no account, no download.

SAR change composite of Campo, Océan, South, Cameroon
Campo, Océan, South, Cameroon2 passes, 2025-01-22 – 2025-11-22 — green = new or brighter backscatter, magenta = gone or dimmer.
SAR change composite of Fargo, Cass County, North Dakota, United States
Fargo, Cass County, North Dakota, United States2 passes, 2024-10-24 – 2025-11-19 — green = new or brighter backscatter, magenta = gone or dimmer.
SAR change composite of Hamburg, Germany
Hamburg, Germany2 passes, 2024-12-21 – 2025-11-19 — green = new or brighter backscatter, magenta = gone or dimmer.
SAR change composite of Sanpete County, Utah, United States
Sanpete County, Utah, United States2 passes, 2024-10-24 – 2025-11-05 — green = new or brighter backscatter, magenta = gone or dimmer.
SAR change composite of Pudahuel, Provincia de Santiago, Santiago Metropolitan Region, Chile
Pudahuel, Provincia de Santiago, Santiago Metropolitan Region, Chile2 passes, 2024-11-17 – 2025-11-09 — green = new or brighter backscatter, magenta = gone or dimmer.

Explore the whole archive

Every acquisition in the open catalog on one zoomable map, with live filters for place, date range and product type — no install, no search round-trip.

Read the docs

Install the toolkit and go from a search to an analysis-ready array in a few lines of Python or one CLI call.

Get the source

pip install umbra-py — an open-source, Python-first toolkit for Umbra's open SAR data.