#Planetary Computer

2 posts

Tutorial Python

Monitoring reservoir water quality from space with Sentinel-2 and Python (Peak District case study)

Track chlorophyll, turbidity and peat colour proxies in four Peak District reservoirs with free Sentinel-2 imagery: cloud and water masking for small, dark upland lakes, NDCI and NDTI time series from 2019 to 2026, anomaly ranking, maps, tidy CSVs and an honest check against Environment Agency samples.

Intermediate 17 min read 15 October 2026

Tutorial Python

Sentinel-1 SAR flood mapping in Python: the 2022 Pakistan floods

Map the 2022 Sindh floods with free Sentinel-1 radar from the Microsoft Planetary Computer: convert backscatter to decibels, remove speckle with a Lee filter, pick a water threshold with Otsu's method, and measure the flood extent and how it receded over seven months.

Intermediate 9 min read 15 October 2026