Contrail Avoidance: American Airlines’ Pioneering Efforts To Reduce Aviation's Climate Impact

Rhea-AI Summary

American Airlines (AAL) has participated in a groundbreaking study led by Google Research and Breakthrough Energy to develop and test contrail avoidance methods. The innovative pilot program demonstrated a 54% reduction in contrail formation using AI and predictive mapping. Contrails may account for approximately 35% of aviation's global warming impact, according to the IPCC.

The study combined large datasets with AI to create contrail forecast maps. A small group of American Airlines pilots flew 70 flights over six months, using AI-based predictions to make minor route modifications. This initiative represents one of the first real-world proof points that commercial flights can verifiably avoid contrails, potentially offering a cost-effective and scalable climate solution for the aviation industry.

Positive

• 54% reduction in contrail formation achieved in test flights
• Potential for a cost-effective and high-impact climate intervention
• Collaboration with leading tech companies (Google Research) and climate initiatives (Breakthrough Energy)

Negative

• Additional research needed to determine if success can be replicated and scaled
• Challenges in refining the science and improving contrail forecasting models
• Potential increase in fuel use due to avoidance maneuvers

NORTHAMPTON, MA / ACCESSWIRE / August 27, 2024 / American Airlines:

Innovative Pilot Program Shows 54% Reduction in Contrail Formation Using AI and Predictive Mapping

Originally published in American Airlines' 2023 Sustainability Report

Reducing aviation's contribution to climate change requires understanding all our industry's impacts and identifying ways to address them. Condensation trails - or contrails - form when airplanes fly through layers of humidity, and they may account for approximately 35% of aviation's global warming impact, according to the Intergovernmental Panel on Climate Change.⁴ Partnerships among the aviation, academic and technology communities have developed strategies aimed at predicting when a flight path is likely to cause a contrail and deploying an alternate path at a slightly lower altitude to avoid doing so. These contrail avoidance strategies, while still in the early stages of exploration, hold the promise of being among the most cost-effective and scalable climate solutions for the aviation industry in the near term.

How American is helping accelerate solutions

American is helping lead the way toward developing and testing contrail avoidance methods. In 2023, we participated in a first-of-its-kind study led by Google Research and Breakthrough Energy to help advance the science on contrail avoidance. The study tested whether we could identify atmospheric zones likely to create contrails and give pilots sufficiently accurate information to avoid creating those contrails. Our partners combined large datasets - including satellite imagery, weather and flight path data - with artificial intelligence (AI) to develop contrail forecast maps. A small group of American pilots then flew 70 flights over six months using the AI-based predictions to make small modifications to routes that were projected to create contrails.

The Potential

• Relatively low-cost and high-impact climate intervention

• Initial models for predicting highest-severity contrails have shown high accuracy

• Rerouting a small percentage of flights could avoid the majority of contrail warming

Actions Needed

1. Buy-in across airlines and the flight planning ecosystem for large-scale implementation

2. Cooperation of, and close coordination with, air traffic control authorities

3. Continued research to understand the climate impacts of contrails and improve contrail avoidance methodologies and validation

The Challenges

• Refining the science to reduce uncertainty related to the warming impact of contrails

• Continuing to improve the models that forecast where highest-severity contrails are likely to be created

• Expanding satellite coverage to observe and verify contrail formation

• Quantifying and effectively balancing the benefits of avoiding contrails with the impacts of increased fuel use as a result of avoidance maneuvers

The flights that used the AI predictions reduced contrail formation by 54%, as measured by distance, compared with flights where pilots did not use the predictions. While additional research is needed to determine if this success can be replicated and scaled, the results of this small-scale test provide an encouraging proof point of a promising climate solution.

54% reduction in contrail formation on American's test flights - among the first real-world proof points that commercial flights can verifiably avoid contrails

Read more

⁴ See https://www.ipcc.ch/report/ar6/wg3/downloads/report/IPCC_AR6_WGIII_Chapter10.pdf for more information.

View additional multimedia and more ESG storytelling from American Airlines on 3blmedia.com.

Contact Info:

Spokesperson: American Airlines
Website: https://www.3blmedia.com/profiles/american-airlines
Email: info@3blmedia.com

SOURCE: American Airlines

View the original press release on accesswire.com

FAQ

What percentage reduction in contrail formation did American Airlines (AAL) achieve in its pilot program?

American Airlines achieved a 54% reduction in contrail formation, as measured by distance, in its pilot program using AI-based predictions for flight path modifications.

How many flights did American Airlines (AAL) conduct in its contrail avoidance study?

American Airlines conducted 70 flights over a six-month period as part of the contrail avoidance study in 2023.

Who partnered with American Airlines (AAL) for the contrail avoidance study?

American Airlines partnered with Google Research and Breakthrough Energy to conduct the contrail avoidance study.

What percentage of aviation's global warming impact may be attributed to contrails, according to the IPCC?

According to the Intergovernmental Panel on Climate Change (IPCC), contrails may account for approximately 35% of aviation's global warming impact.