Stefan Rahmstorf, a Potsdam climatologist.
The researcher whose peer-reviewed work established the stability limits and tipping behavior of the Atlantic Meridional Overturning Circulation (AMOC), the ocean current system the engine uses as its AMOC-collapse forcing factor.
His published science mapped the stability parameters and tipping-element behavior of the AMOC, providing the documented basis for the engine's climate-collapse scenario.
The engine holds several readings together: deliberate surfacing of climate risk, ordinary peer-reviewed science, and genuine uncertainty about exactly when a collapse might occur, all treated as load-bearing rather than resolved into one verdict.