Pieter De Vis is one of the lead developers of the CoMet toolkit. He implemented the punpy and comet_maths tools.

Pieter De Vis works in the Climate and Earth Observation Group at the UK’s National Physical Laboratory,where he focuses on atmospheric correction, satellite cal/val, the propagation of uncertainties through a measurement function, and uncertainties in model fitting. He is an experienced programmer and has developed many modular python tools for both internal and external use. He has applied this expertise to quantify uncertainties in various fields, including ocean color, greenhouse gases, and surface reflectances.

His background is in astronomy, where he focused on cosmic dust in galaxies. In 2019, he made the switch to Earth Observation, a topic that shares many concepts with astronomy, particularly with how light travels through the atmosphere.

Samuel E. Hunt is one of the lead developers of the CoMet toolkit. He implemented the obsarray tool.

Sam received the master’s degree in physics from the University of Durham, Durham, U.K., in 2014.

He was a Trainee with European Space Agency, European Space Research and Technology Centre, Noordwijk, The Netherlands. He was a part of the Sentinel-3/OLCI Performance Team. In 2016, he joined the National Physical Laboratory, Teddington, U.K., where he is currently a Senior Research Scientist focusing on the satellite Earth Observation metrology. His work aims to improve the quality of and confidence in satellite Earth observations, using insights from metrology.

Rasma joined Climate and Earth Observations group at the National Physical Laboratory as a graduate research scientist in September 2023, right after completing an MSc in Environmental Science and Policy, with a focus on climate change at King’s College London. Prior to this, Rasma obtained a BSc in Physics from Royal Holloway University of London. During her postgraduate degree, Rasma completed an Air Quality Assessment internship at NPL which inspired her to pursue a further career in the company. Her master’s thesis was focusing on the recovery and characterisation of microplastics across UK beaches, solidifying interest in researching environmental issues.

As a scientist in the Climate and Earth Observation Group at the UK’s National Physical Laboratory Maddie’s working to develop algorithms and evaluate the performance of satellite cross-calibration. In particular her work supports ESA’s TRUTHS climate satellite mission.

Astrid Zimmermann (PhD), is a Higher Scientist in the Climate and Earth Observation group at the National Physical Laboratory (NPL), UK. She has started at NPL in late 2023, and since has been working on the assessment of uncertainties and tool development for uncertainty propagation for the CHIME L2, FLEX DISC and VICALOPS projects. Further, she supports the maintenance and deployment of HYPERNETS instruments at NPL. Astrid’s background is in engineering and earth science, each with strong focus on the computer science part. She did her MSc project at Lund University (Sweden) on projecting invasive species using remote sensing and developing a spatial explicit model, and her PhD at University Grenoble Alpes (France) and Swansea University (UK) on developing a viscoelastic model for the investigation of ice shelf dynamics. She has experience in a variety of programming languages and styles, from scripting to object-oriented programming.