Better Contrails Mitigation

Project Information

BeCoM

Grant agreement ID: 101056885

DOI

10.3030/101056885

EC signature date 4 May 2022

Start date 1 June 2022

End date 31 May 2026

Funded under

• Climate, Energy and Mobility

Total cost

€ 4 457 338,75

EU contribution

€ 4 457 334,00

Coordinated by

TECHNISCHE UNIVERSITEIT DELFT
Netherlands

CORDIS provides links to public deliverables and publications of HORIZON projects.

Links to deliverables and publications from FP7 projects, as well as links to some specific result types such as dataset and software, are dynamically retrieved from OpenAIRE .

Deliverables

Documents, reports (7)

Tests of the assimilation of cloud measurements within the ICON global forecasting system based on the MFASIS operator of RTTOV

This deliverable will report the exploration of using measurements of high clouds and contrails within the ICON global forecasting system to improve the representation of humidity and the prediction of contrails.Linked to T2.1.

Concept of an ice cloud microphysics module of intermediate complexity for application in numerical weather prediction

The deliverable will describe an ice cloud parameterisation for a weather model, in this case the ICON weather model, that allows: 1) ice supersaturation in clear sky, 2) that initiates cirrus formation only at certain degrees of supersaturation (temperature dependent, homogeneous nucleation), 3) that does consume the excess water vapour (i.e. the fraction above saturation) not instantaneously but following its thermodynamic force (that is, the crystal growth rate is proportional to the degree of supersaturation); this allows to have supersaturation within clouds as observed, and4) point 3 above works in the same way at subsaturation, i.e. the rate of crystal sublimation is proportional to the degree of subsaturation, such that cirrus clouds can survive for a while at subsaturated conditions, as observed.The deliverable will also report on tests of this new parameterisation within offline-runs of ICON for several situations.Linked to T2.3.

Description on training and testing datasets

This is a report containing detailed information about datasets sources formats and corresponding preprocessing will be produced highlighting in particular the underlying labeling methodology where appropriate This will serve as a basis to avoid biases in AI algorithms and will also ensure consistent use of data across the several project WPsLinked to T31 T13 T11 T14

The humidity analyses and the degree of supersaturation

This deliverable will include the results of humidity analysis and the calculation of the degree of supersaturations. The aim is to identify humidity variability associated to different measurements. Such comparison is essential for AI algorithm training in WP3.Linked to T1.1 and T1.4.

The development and calculation of robust algorithmic cost functions for climate change of H2O, NOx, and contrail cirrus

This deliverable will document the development and calculation of robust algorithmic cost functions (ACFs) for climate change of non-CO2 effects, e.g., H2O, NOx, and contrail cirrus. The developed ACFs will serve the basis for the further assessment of the new policy driven flight planning.Linked to T5.1 and T5.2.

Algorithmic specification of contrails detection AI algorithms

This report documents details of the mathematical formalization of AI algorithms, their architectures and their properties will be produced. This document will articulate the proposed approaches with state-of-the-art algorithms already proven successful in other relevant contexts.Linked to T3.1 and T3.2.

Upgraded instrumentation and Lidar inversion software

This deliverables will report the upgrades of instrumentation, e.g., Lidar or flash sondes, for systematic operations. The optimized instrumentation is important for collecting water vapour/ice cloud information to be used in analysing the humidity and degree of supersatuaration in D1.2. Linked to T1.1.

Websites, patent fillings, videos etc. (1)

Project website

The project website will be one of the key channels for BeCoM to disseminate the project activities and research findings

Publications

Peer reviewed articles (5)

Atmosphere

Author(s): Florian Mandija; Philippe Keckhut; Dunya Alraddawi; Sergey Khaykin; Alain Sarkissian
Published in: MDPI Atmosphere, 2024, ISSN 2073-4433
Publisher: Rotoweb Cantelli
DOI: 10.20944/PREPRINTS202409.0639.V1

Atmosphere

Author(s): Dunya Alraddawi; Philippe Keckhut; Florian Mandija; Alain Sarkissian; Christophe Pietras; Jean-Charles Dupont; Antoine Farah; Alain Hauchecorne; Jacques Porteneuve
Published in: MDPI Atmosphere, Issue 16 (3), pp.351, 2025, ISSN 2073-4433
Publisher: MDPI
DOI: 10.3390/ATMOS16030351

Atmospheric Research

Author(s): Diarra, Sidy; Baray, Jean-Luc; Montoux, Nadège; Fréville, Patrick; Peyrin, Frédéric; Cacault, Philippe; Boucher, William; Keckhut, Philippe
Published in: Atmospheric Research, 2026, ISSN 0169-8095
Publisher: Elsevier
DOI: 10.1016/J.ATMOSRES.2025.108500

Nighttime Contrail Characterization from Multisource Lidar and Meteorological Observations

Author(s): Florian Mandija, Philippe Keckhut, Dunya Alraddawi, Abdanour Irbah, Alain Sarkissian, Sergey Khaykin, Frédéric Peyrin, Jean-Luc Baray
Published in: Remote Sensing, Issue 18, 2026, ISSN 2072-4292
Publisher: MDPI AG
DOI: 10.3390/RS18020210

Towards a more reliable forecast of ice supersaturation: Concept of a one-moment ice cloud scheme that avoids saturation adjustment

Author(s): Dario Sperber; Klaus Gierens
Published in: Atmos. Chem. Phys., Issue 23, 2023, ISSN 1680-7324
Publisher: Copernicus
DOI: 10.5194/acp-23-15609-2023

Conference proceedings (16)

Ground-based installations at the Haute Provence Observatory (OHP) to monitoring and study condensation trails

Author(s): Abdanour Irbah, Philippe Keckhut, Dunya Alraddawi, Florian Mandija, Olivier Liandrat
Published in: 2025
Publisher: Copernicus GmbH
DOI: 10.5194/EGUSPHERE-EGU25-11372

Upper tropospheric water vapor profiles derived from Raman lidar over France territories for contrails investigations

Author(s): Dunya Alraddawi, Philippe Keckhut, Florian Mandija, Alexis Mariaccia, Christophe Pietras, Jean-Charles Dupont, Guillaume Payen, Hélène Vérèmes, Alain Hauchecorne, Alain Sarkissian, Jean-François Mariscal, Jacques Porteneuve, Jean-Luc Baray, Nadège Montoux
Publisher: To be assigned

Towards a more reliable forecast of ice supersaturation: Concept of a one-moment ice cloud scheme that avoids saturation adjustment

Author(s): Sperber, Dario Pascal; Gierens, Klaus Martin
Published in: Atmospheric Chemistry and Physics, 2023
DOI: 10.5194/ACP-23-15609-2023

Mitigation potential of optimized aircraft trajectories and its dependency on weather patterns

Author(s): Federica Castino, Feijia Yin, Volker Grewe, Hiroshi Yamashita
Published in: 2025
Publisher: Copernicus GmbH
DOI: 10.5194/EGUSPHERE-EGU24-16759

Automated nighttime contrail detection using spatio-temporal clustering of Raman lidar measurements 

Author(s): Florian Mandija, Philippe Keckhut, Dunya Alraddawi, Abdanour Irbah, Alain Sarkissian, Sergey Khaykin, Frédéric Peyrin, Jean-Luc Baray
Published in: 2026
Publisher: Copernicus GmbH
DOI: 10.5194/EGUSPHERE-EGU26-5443

Midlatitude cirrus cloud investigations from ground-based lidar and ERA-5 re-analysis

Author(s): Florian Mandija, Dunya Alraddawi, Philippe Keckhut, Sergey Khaykin
Published in: 2025
Publisher: Copernicus GmbH
DOI: 10.5194/EGUSPHERE-EGU24-11218

Net(-work) Impact of Non-CO2 Pricing in EU ETS: Demand and Ticket Price Dynamics in Air Transport Across Geographical Scopes

Author(s): Katrin Kölker, Malte Niklaß, Roland Eichinger, Thorsten Ehlers, Zarah Zengerling, Klaus Lütjens
Published in: Transportation Research Procedia, Issue 95, 2026, ISSN 2352-1465
Publisher: Elsevier BV
DOI: 10.1016/J.TRPRO.2026.02.039

Comparisons of radiosonde water vapor measurements with ECMWF ERA-5 and contrails observations above Clermont-Ferrand (France)

Author(s): Diarra, Sidy; Baray, Jean-Luc; Montoux, Nadège; Fréville, Patrick; Peyrin, Fréderic; Cacault, Philippe; Keckhut, Philippe
Published in: Crossref, 2025
Publisher: EGU General Assembly 2024
DOI: 10.5194/EGUSPHERE-EGU24-10040

Integrating aviation’s non-CO2 effects into EU ETS: Impact of CO2e accounting on operational and technological climate mitigation measures

Author(s): Zarah Lea Zengerling, Malte Niklaß, Volker Gollnick
Published in: Transportation Research Procedia, Issue 95, 2026, ISSN 2352-1465
Publisher: Elsevier BV
DOI: 10.1016/J.TRPRO.2026.02.025

Ground-based facilities for monitoring and studying condensation trails

Author(s): Abdanour Irbah, Philippe Keckhut, Dunya Alraddawi, Florian Mandija, Olivier Liandrat, Frédéric Peyrin, Mehdi Ben Slama
Published in: Remote Sensing of Clouds and the Atmosphere XXX, 2025
Publisher: SPIE
DOI: 10.1117/12.3070145

Integrating climate policies into air transport operations: Challenges, Risks, and Impacts

Author(s): Niklaß, Malte; Zengerling, Zarah Lea; Kölker, Katrin
Published in: 15th EASN International Conference on Innovation in Aviation and Space, 2025
Publisher: EASN

Comparison of TRACIS campaign data with data from radiosonde, IPRAL Lidar and ERA5

Author(s): Alexis Poignard, Antoine Farah, Alain Sarkissian, Philippe Keckhut, Dunya Alraddawi, Sergey Khaykin, Jean-Charles Dupont, Julie Capo
Published in: 2026
Publisher: Copernicus GmbH
DOI: 10.5194/EGUSPHERE-EGU26-21164

Mitigating the climate impact of aviation by operational means - A comparative study for different weather situations

Author(s): Zengerling, Zarah Lea; Mendiguchia Meuser, Maximilian; Lau, Alexander
Published in: Proceedings of the 34th ICAS Congress 2024, 2024
Publisher: ICAS

Raman lidar water vapor observations to assess the uncertainty of MLS and ERA5 at the upper troposhere

Author(s): Dunya Alraddawi, Philippe Keckhut, Florian Mandija, Guillaume Payen, Jean Charles Dupont, Christophe Pietras, Abdenour Irbah, Alain Sarkissian, Alain Hauchecorne, Jacques Porteneuve
Published in: 2025
Publisher: Copernicus GmbH
DOI: 10.5194/EGUSPHERE-EGU25-10454

Investigating the feasibility of supporting climate-optimized flight planning with non-CO2 policies

Author(s): Zengerling, Zarah Lea
Published in: International Conference on Sustainable Aviation Research (ICSAR 2025), 2025
Publisher: ICSAR

"Contrail detection at nighttime combining lidar, meteorological and system  ADS-B data "

Author(s): Florian Mandija, Philippe Keckhut, Dunya Alraddawi, Abdanour Irbah
Published in: 2025
Publisher: Copernicus GmbH
DOI: 10.5194/EGUSPHERE-EGU25-19851