The print is the print-based form of Algorithm of Colour, a work built from 100 atmospheric color layers derived from climate reanalysis data. Each layer is generated computationally and combined into a single image.
The work is based on a single coordinate and a single date: Mbale, Uganda, February 10, 1973, the date of public executions under Idi Amin's regime. The color layers are generated using Copernicus ERA5, a climate reanalysis dataset produced by the European Centre for Medium-Range Weather Forecasts. ERA5 combines historical measurements with a physics-based model to estimate atmospheric conditions at a given place and time. It does not contain direct photographic or observational records. NASA MERRA-2, a separate reanalysis dataset, is used to validate the method against more recent dates for which additional data exists; MERRA-2 does not cover 1973 and was not used to generate this print.
From the ERA5 data, the sky is modeled using Rayleigh and Mie scattering calculations, the physical processes that determine sky color under given atmospheric conditions. The output is a modeled rendering. The reconstruction is a model, not a record.
The work is part of a framework the artist calls atmospheric witnessing. In this framework, environmental data is used to approach historical events through atmospheric conditions rather than photographic or documentary evidence. It is an attempt to approach what the victims saw, and what all those present witnessed, the last shared sky above them.
Algorithm of Colour, Reflection was exhibited at KunstRAI Amsterdam in April 2026, as part of Paralelepípedo: about paradoxical dreams, bodies and imaginaries, curated by Jimena Casas and Mariken Overdijk, alongside work by fellow Rietveld Academie alumni.
The work was covered by Het Parool in an article by Edo Dijksterhuis on Rietveld Academie alumni at KunstRAI, published April 20, 2026.