Editing Non-CO2 Aviation Climate Forcing (section)

== Monitoring and Measurement ==
Monitoring non-CO2 aviation climate forcing relies primarily on atmospheric modeling and aviation inventory data. Scientists use emissions inventories detailing aircraft fuel consumption and operational parameters to estimate the release of non-CO2 substances such as nitrogen oxides (NOx), water vapor, and particulates. These data feed into atmospheric chemistry and climate models that simulate the formation of contrails and induced cloudiness, as well as the chemical transformations affecting ozone and methane concentrations.

Direct observational methods include satellite remote sensing and in situ atmospheric measurements, which help validate model outputs and improve understanding of contrail properties and their climatic effects. Institutions involved in this research often include national meteorological and environmental agencies, as well as international scientific collaborations focused on aviation and climate interactions.

Within the SIGNAL system, this phenomenon is treated as a defined environmental signal whose boundaries and measurement conventions are described below.