Project Goal:

The goal of the project, Better Contrail Mitigation (BeCoM), is to attempt a significant reduction(>50%) or elimination of the global mean contrail radiative forcing. As a result, the reduction in contrail formation would reduce aviation's global contribution, making the goals achievable in a shorter time horizon.

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BeCoM’s objectives:

Objective 1

Enhance the routine measurements of atmospheric humidity at the cruise altitude

  • Consolidate Lidar instruments for routine operations

  • Extend Aircraft Meteorological Data Relay

  • Combine different measurements to measure humidity at the upper troposphere

  • Extend Aircraft Meteorological Data Relay to enable routine measurements of humidity at cruise level

Objective 2

Improve the treatment of ice supersaturated regions in numerical weather prediction models

  • Assimilation of satellite-borne measurements and direct camera images new to enhance the numerical representation of ice clouds within their ambient humidity field and within their dynamical background in the NWP models

  • Develop a new concept of ice cloud microphysics for NWP models that improves the prediction of ice-supersaturated regions

  • Propose a standard for quantifying uncertainties in contrail formation and climate impact at an operational flight weather data field

  • Estimate this uncertainty of persistent contrail-cirrus prediction

Objective 3

Develop appropriate AI algorithms for data assimilation, contrail detection, contrails classification, and uncertainties of contrail prediction.

  • Identify adequate data sources for AI training

  • Develop appropriate AI algorithms trained using datasets delivered in Objective 1

  • Evaluate the contrails prediction models through comparison with empirical observations

Objective 4

Minimize cost impact when implementing climate optimized trajectories

  • Evaluate the effectiveness of warning contrail avoidance by trajectories optimization

  • Minimize the cost impact when implementing climate optimized flight trajectories

Objective 5

Develop and evaluate non-CO2-based measures to be applied for ATM strategies for climate impact mitigation

  • Integrate non-CO2 effects within current policy schemes

  • Analyse existing and discussed operational policy instruments for non-CO2 effects

  • Convert non-CO2-effects into algorithmic cost functions for climate change

  • Develop a concept for the integration of uncertainties of algorithmic cost functions for climate change

Objective 6

Dissemination and exploitation of BeCoM results

  • Transpose the scientific findings of BeCoM into formats and tools exploitable

  • Create a platform to disseminate the BeCoM outcomes

  • Create links with other EU partnerships

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