Measurement of Water Vapor on Commercial Aviation Flight Tracks

Abstract

We present a groundbreaking water vapor sensor specifically engineered for autonomous deployment on commercial aircraft. This innovative sensor was recently put to the test aboard a research aircraft, which conducted chase flights aimed at assessing the emissions from sustainable aviation fuel. In this presentation, we will explore the sensor's performance in flight conditions and delve into the key design features that make it suitable for this application. A significant aspect of our study is the potential of this monitoring system to serve as a routine, cost-effective, and highly reliable solution for automated water vapor measurement on commercial flights. The data acquired through this system is expected to significantly enhance now-casting model systems. Specifically, it will provide high-resolution water vapor data crucial for evaluating the Appleman-Schmidt criterion, thereby aiding in the prevention of persistent contrail formation – a major environmental concern in aviation. Our findings demonstrate the feasibility and value of implementing such a water vapor monitoring system in commercial aviation, with implications for both environmental monitoring and the advancement of sustainable aviation practices.