Living Planet Symposium 2025

May 1, 2025·
Pieter De Vis
Pieter De Vis
· 2 min read

We’re pleased to invite you to a hands-on tutorial session on the CoMet (Community Metrology) Toolkit, taking place during ESA’s Living Planet Symposium 2025:

🗓 Sunday 22nd June

🕒 15:30 – 16:50

📍 Vienna, Living Planet Symposium (Room TBC)

The CoMet Toolkit (www.comet-toolkit.org) is an open-source suite of Python tools for handling and propagating uncertainties and error-correlation in measurement data. Originally designed for Earth Observation (EO) applications, CoMet’s flexible tools can be applied to any dataset involving uncertainties — making it highly relevant for anyone working with measurement functions and data analysis in Python.

🗸 In this tutorial, we will:

  • Introduce the key concepts behind metrological uncertainty propagation
  • Walk through the core components of the toolkit:
    • punpy – for robust uncertainty propagation with support for error-correlation structures
    • obsarray – for managing and storing uncertainty metadata in a self-describing, traceable format
  • Work through a sensor calibration example using Google Colab-based Jupyter notebooks

We’ll also provide support to get you started using CoMet with your own example use-case if time permits — so feel free to bring a Python example from your work involving measurement uncertainty.

Whether you’re working in satellite Cal/Val, EO data processing, or any other measurement-driven field, this session will help you implement rigorous, traceable uncertainty handling in your processing chains.

🗸 No installation is required beforehand – all examples will run in Google Colab!

Pieter De Vis
Authors
Pieter De Vis
Senior Scientist, NPL
Pieter works in the Climate and Earth Observation Group at the UK’s National Physical Laboratory. His expertise lies in atmospheric correction, the propagation of uncertainties through a measurement function, and uncertainties in model fitting.