| --- |
| license: cc-by-4.0 |
| tags: |
| - sentinel-2 |
| - cloud-properties |
| - remote-sensing |
| - clouds |
| - clouds-decoded |
| --- |
| |
| # Sentinel-2 Cloud Property Retrievals over the UK and India |
|
|
| Rendered per-scene quicklook layers of cloud optical and microphysical properties |
| retrieved from Sentinel-2 (MSI) Level-1C imagery over eight tiles (four in the UK |
| and four in India). These images power the interactive report at |
| [asterisk-labs-clouds-decoded-rain-check.static.hf.space](https://asterisk-labs-clouds-decoded-rain-check.static.hf.space). Cloud properties are estimated with the [clouds-decoded retrieval code](https://github.com/asterisk-labs/clouds-decoded), developed as part of the [clouds decoded project](https://asterisk.coop/project-pages/project-clouds-decoded.html) funded by ARIA. |
|
|
|
|
| ## Coverage |
|
|
| | Region | Tiles (MGRS) | |
| |--------|--------------| |
| | UK | T29VMC, T30UVA, T31UDA, T31VDF | |
| | India | T42QYE, T43PDM, T44PNB, T45QWB | |
|
|
| ~8,400 scenes spanning 2015–2026; each tile is ~110 × 110 km. |
|
|
| ## Layers |
|
|
| Each scene directory holds these per-scene PNGs: |
|
|
| | File | Description | |
| |------|-------------| |
| | `true_colour.png` | RGB true-colour composite | |
| | `cloud_mask.png` | cloud / clear mask | |
| | `cloud_height.png` | cloud-top height (m) | |
| | `ice_composite.png` | ice / phase composite | |
| | `properties_tau.png` | cloud optical thickness (τ) | |
| | `properties_r_eff_liq.png` | liquid effective radius (µm) | |
| | `properties_r_eff_ice.png` | ice effective radius (µm) | |
| | `properties_ice_liq_ratio.png` | ice / liquid ratio (thermodynamic phase) | |
| | `properties_uncertainty.png` | retrieval uncertainty | |
| | `overview.png` | combined multi-panel overview | |
|
|
| ## Layout |
|
|
| ``` |
| figures/<SCENE_ID>/<layer>.png |
| ``` |
|
|
| `<SCENE_ID>` is the Sentinel-2 L1C product identifier |
| (e.g. `S2A_MSIL1C_20150712T111036_N0500_R137_T31UDA_20231010T005751`), which |
| encodes the acquisition date, relative orbit and MGRS tile. |
|
|
| ## Retrieval & sources |
|
|
| Generated with the [clouds-decoded](https://github.com/asterisk-labs/clouds-decoded) |
| processing chain applied to Sentinel-2 L1C. |
|
|
| - Sentinel-2 MSI L1C — Copernicus / ESA |
|
|
| ## License |
|
|
| CC-BY-4.0. |
|
|
|
|
