Honeywell , Boeing, and the University of Reading have launched Project MIST, an ATI Programme-funded initiative to develop an aircraft-based humidity sensor for improved contrail forecasting and climate modeling. The project aims to close critical data gaps by advancing in-flight atmospheric sensing.
Honeywell leads sensor integration and systems engineering from its Yeovil, UK facility, leveraging its aerospace manufacturing expertise. Boeing provides aircraft integration and test support from its Bristol site and Seattle team, applying its knowledge of contrail formation. The University of Reading contributes meteorological modeling and climate analysis, drawing on decades of aviation impact research.
Current humidity sensors lack the accuracy and fleet-wide adoption needed for reliable contrail prediction. Project MIST will develop a prototype sensing capability that integrates onto aircraft to validate weather models and support future contrail-avoidance strategies. Industry leaders emphasize the need for high-frequency atmospheric data to address aviation’s non-CO2 climate effects. The collaboration aligns with the ATI’s Non-CO2 Technologies Roadmap and supports the UK’s Jet Zero ambition, with backing from Industry Minister Chris McDonald.
