A 424 and 448 GHz Receiver for Aircraft Contrail Observations

Abstract

Airplane produced contrail cirrus has a greenhouse effect in our atmosphere. It has an effect that is as much as or more than any other airplane emission such as airplane produced CO ₂ Karcher et al. 2018. With air traffic anticipated to increase into the future it is important to understand contrail cirrus formation. We present a new receiver instrument using the 424 GHz (O ₂ ) and 448 GHz (H ₂ O) emission lines for thermal and humidity profiling that will provide data to model airplane contrail formation. Such an instrument can be used for guiding aircraft flight paths to reduce the development of contrail cirrus that can have an immediate greenhouse effect in our atmosphere.