Google tests ways to reduce aircraft contrails in sky

Google and the UK government are working together on a project to determine whether aircraft can be prevented from creating white lines in the sky. As part of a project called Operation Blue Sky, a trial will be conducted in the Shanwick airspace.

It has become common to see aircraft flying across the sky in the modern era. After all, the history of air travel is now quite long, and the technologies used in passenger and fighter aircraft are continuously being modernized.

However, many people still do not know much about certain aspects of aircraft. One such phenomenon is the white lines that appear in the sky after an aircraft passes. Seeing aircraft leave these white trails in the sky is normal and they are known as contrails.

As the name suggests, contrails are formed when gases or water vapor change into a liquid or solid state. When aircraft fuel burns, it produces water vapour. At high altitudes, extremely cold temperatures cause this vapor to turn into ice particles or crystals creating white trails in the atmosphere.

Contrails are not directly harmful to humans but they can have an impact on the environment. These trails can affect the Earth’s atmosphere. According to the Environmental Protection Agency, they can increase cloud cover which can have an effect on the Earth’s overall temperature.

Operation Blue Sky will run for around 30 months, during which small changes will be made to aircraft flight routes. During the project, weather forecasts will be used to estimate atmospheric temperatures and aircraft altitudes may be adjusted by up to 2,000 feet in an effort to prevent contrails from forming.

Google will provide AI-powered weather forecasting models for the project. These models will help identify areas where conditions are suitable for contrail formation. The results will then be assessed using satellite data and machine-learning technology.

It is worth noting that how long contrails remain visible in the sky depends on atmospheric temperature. Sometimes they disappear almost immediately while in other cases they can remain visible for a considerable period of time.