Global aviation

ICAO CAEP: aviation and the global environment

Since 2006, CERC has contributed to studies of the impact of aviation on the global environment as part of the Model Developers Group (MDG) of the ICAO Committee on Aviation Environmental Protection (ICAO CAEP). The work has included the following tasks.

• Calculations of global emissions of NOx and PM10 from aircraft main engines. Four LAQ performance-based models are currently deemed acceptable to support the CAEP analysis: one is CERC’s aircraft emissions model. These calculations were presented at the CAEP/8 meeting, which decided to tighten the global NOx emissions standard for aircraft main engines, starting on 31 December 2013.

• MDG conducted dispersion modelling sample problems using four candidate dispersion models and emissions calculation methodologies. CERC used its own ADMS-Airport and EMIT models. A mock airport “CAEPport” was used to test basic functionality of emission source characterisation and pollutant dispersion modelling. There is an aspiration for CAEP to use dispersion modelling in future assessments of global aviation impact. 

CERC works on these studies with the other members of the MDG sub group for Local Air Quality (LAQ) modelling. The other members are US FAA, ENVISA (sponsored by EUROCONTROL), and Janicke Consulting (sponsored by FOCA and BMVBS).
CERC’s participation in ICAO CAEP is sponsored by UK DfT.

Learn more

• ADMS-Airport: Model Inter-Comparisons and Model Validation A paper presented by CERC at HARMO 12, which describes the CAEPport inter-comparisons
• ICAO CAEP website