Matthew Stanley Johnson

Matthew Stanley Johnson is a Professor in the Department of Chemistry at the University of Copenhagen's Faculty of Science. His research focuses on atmospheric chemistry and climate change mitigation strategies, particularly in the area of methane removal technologies. He has established multiple startups related to air quality and climate solutions, including Ambient Carbon and Rensair.

Professor Johnson received his PhD in Chemistry from the California Institute of Technology, where he studied Spectroscopy of Reactive Molecules and Clusters (1989-1995), and his Bachelor's degree in Chemistry from Macalester College, focusing on Linkage isomerism in thiocyanate (1985-1989).

Johnson's research centers on atmospheric chemistry with emphasis on developing innovative climate solutions. His pioneering work on iron salt aerosol mechanisms for methane removal represents a novel approach to addressing one of the most potent greenhouse gases. His interdisciplinary research spans from fundamental molecular studies to practical applications for air pollution control, combining chemistry, physics, and engineering to tackle environmental challenges. His PERMA Project achieved a "world record for eradication of low concentration methane," demonstrating the real-world impact of his work.

Analysis of Johnson's recent publications reveals a strong progression from theoretical understanding to practical implementation of methane removal technologies. His work on iron salt aerosol mechanisms shows how atmospheric chlorine chemistry can be harnessed for methane oxidation. Key themes across his publications include photocatalysis, isotope fractionation, and the development of efficient photoreactors for environmental applications, with increasing focus on field demonstrations and practical implementation.

• Ny dansk opfindelse nedbryder drivhusgas på 10 sekunder (July 2025)
• These startups hope to spray iron particles above the ocean to fight climate change (February 2023)
• Uventet høj forurening i metroen i København (January 2023)
• Always Searching To Clear The Air With Dr. Matthew Johnson (August 2022)

Johnson actively advises multiple environmental technology startups including Ambient Carbon (CEO), Rensair (Chief Science Officer), and Airscape (Founder and Chief Science Officer). His research has attracted significant attention for its potential to complement existing climate change strategies through direct methane removal from the atmosphere.

Johnson leads research teams focused on atmospheric chemistry and climate solutions, with connections to both academic and industry partners. His PERMA Project demonstrates successful translation of fundamental research into practical environmental technology with real-world impact on methane emissions.