Contrails Spreading Cirrus (COSIC)

Animation showing satellite thermal images of the evolving contrail

COSIC

Aims to quantify the climate role of line shaped contrails caused by air-traffic that you often see in the sky. In particular, we aim to understand how they can sometimes spread into larger cloud decks. Such spreading contrails could add significantly to the CO2-driven climate impacts of aviation, but estimates of their effect are very uncertain.

Case Study of spreading contrail over the UK

The pictures show satellite thermal images of the evolving contrail. This was from a case study published by Jim Haywood and colleagues in JGR
doi:10.1029/2009JD012650. Our research observed and modelled a single contrail breakout event over the UK. The event had a large effect on radiative
forcing.