#Cloud Optimised GeoTIFF

2 posts

Tutorial Python

Measuring Lake Mead's shrinking shoreline with Sentinel-2, STAC and Python

Search seven summers of Sentinel-2 imagery with pystac-client, stream only the bands you need from Cloud Optimised GeoTIFFs, mask clouds, compute NDWI and MNDWI and measure how much of Lake Mead dried up between 2019 and 2025.

Intermediate 5 min read 14 October 2026

Tutorial Python

Terrain analysis in Python: stream, clip and analyse a DEM with rasterio and rioxarray

Read only the pixels you need from a cloud-hosted Copernicus DEM, reproject to British National Grid, derive hillshade, slope and aspect with NumPy, compute zonal statistics and draw an elevation profile — all in one script.

Intermediate 6 min read 14 October 2026