Turmoil at CrowdStrike Results in Airplanes Being Grounded — Potentially Causing a Rare Weather Phenomenon

Global air service for numerous carriers was abruptly stopped following an erroneous update from CrowdStrike, which caused system failures in Windows computers across the globe. At this report’s time, FlightAware has recorded close to 3,500 flight cancellations worldwide.

This IT disruption is not only a source of inconvenience for passengers but it might also bring about an unintended positive change for the environment: clearer skies and potentially cooler temperatures tonight, says David Travis, a researcher renowned for his work on the impact of jet contrails on weather patterns. Although the change might be subtle and short-lived, it serves as an illustration of the unexpected ways in which aviation influences our climate and how a software mishap can trigger such effects.

Jet planes at high altitudes often produce contrails, the fluffy vapor trails that form when jets emit water vapor and pollutants into the air. These trails quickly spread out but leave behind thin, cirrus-like clouds. These clouds can reflect solar radiation away from the Earth during the day but also trap heat in the atmosphere at night.

Contrails, on the whole, contribute to global warming more than they help cool the planet, adding an extra 1% to 2% to global warming. While carbon dioxide and methane are the primary gases associated with greenhouse effects, water vapor is also a significant contributor to atmospheric warming.

The significance of contrails has prompted Breakthrough Energy, founded by Bill Gates, to launch a task force focused on this issue. In May, the initiative partnered with ForeFlight, a Boeing-owned aviation app startup, aiming to advise pilots on avoiding contrail formation. Google has also joined forces with Breakthrough Energy, applying its AI expertise to analyze historical data for contrail prediction. American Airlines conducted tests with this model on 70 flights, achieving a 54% reduction in contrail formation, as reported by Google.

A key study into the climate impact of contrails followed the aviation pause after September 11, led by David Travis, then a University of Wisconsin-Whitewater professor. This pause offered a unique opportunity to observe atmospheric conditions without the influence of jet contrails, which had been impossible since the advent of commercial aviation.

The days following 9/11 were remarkable for their clear skies, noting the absence of contrails, Travis recalls a moment of realization of their absence. Joined by other researchers, he documented atmospheric data during the nearly 72 hours of halted flights across the United States. The findings provided a glimpse into how the atmosphere might have appeared before jets became prevalent, noting wider temperature fluctuations between day and night without the insulating effect of high-altitude clouds.

Research has since deepened our comprehension of contrails and their climatic impact, paving the way for initiatives like Breakthrough Energy’s collaboration with ForeFlight, informed by vast data collected over the years. Travis, now president of Lake Superior State University, highlights this extensive data usage in understanding and mitigating contrails’ effects on climate.

Though the flight disruptions caused by the recent CrowdStrike incident may not parallel the scale seen after 9/11, their environmental implications remain noteworthy, potentially offering a brief insight into reduced high-cloud cover’s effects on local climates.

“We could anticipate a slight decrease in high-altitude cloudiness, which might lead to a minor expansion in the temperature gap between daytime and nighttime for the current and upcoming night,” Travis remarked, emphasizing the dependence on the duration of this disruption.