Geozarr Storytelling

--- layout: example.html title: GeoZarr storytelling shortdesc: Exploring Sentinel-1 event scenarios across orbit groups and time in GeoZarr cubes. docs: > A tour of Sentinel-1 radar imaging through a set of event scenarios stored as GeoZarr cubes. Pick a scene from the **URL** dropdown, switch look direction with the **Group** dropdown where a cube has both ascending and descending orbit passes, and step through **time** to watch each one unfold as a dual-polarization radar composite. *Swiss Alps — the Valais (32TLS)*: the default scene, and the only one here carrying both ascending and descending groups. Over the Rhône valley from Lake Geneva up into the high Alps, radiometric terrain correction (RTC) evens out the slope-driven brightness of raw SAR, so the lakes read radar-dark while forest, rock and snow separate by surface roughness. Switch the **Group** to compare how the two look directions light the valleys. The **URL** dropdown also offers four event scenarios; step through **time** to watch each unfold: *Valencia DANA flood (30SYJ, ascending)*, 26 → 31 Oct 2024: floodwater across the plain and the Albufera lagoon turns radar-dark while the built-up city stays bright, imaged straight through the storm cloud that blinded optical satellites. *La Palma — Cumbre Vieja eruption (28RBS, descending)*, Sep–Dec 2021: fresh, rough lava scatters radar strongly and glows bright as the new lava delta grows into the Atlantic, day or night. *Strait of Hormuz — Fujairah anchorage (40RDN, descending)*, 2026: the Gulf's main tanker anchorage just outside the Strait of Hormuz, one of the world's busiest bunkering hubs. Every frame reveals the fleet at anchor — on the radar-dark sea each tanker is a bright point target, with Fujairah port at the coast. SAR sees the whole fleet through cloud and darkness, day or night, when optical imagery and AIS can't. *Bay of Bothnia sea ice (34WET, descending)*, Feb–Mar 2025: landfast ice locks the Luleå archipelago while floes drift offshore; smooth new ice reads dark, ridged ice bright, shifting pass to pass. tags: "zarr, geozarr, sentinel-1, time, dimensions" experimental: true ---

URLS1 — Swiss Alps / Valais (32TLS, asc + desc)S1 — Valencia DANA flood, Oct 2024 (30SYJ, ascending)S1 — Strait of Hormuz / Fujairah tanker anchorage, 2026 (40RDN, descending)S1 — La Palma lava delta, 2021 (28RBS, descending)S1 — Bay of Bothnia sea ice, 2025 (34WET, descending)Custom...Load

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