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  4. Seasonal variability of aircraft trajectories reducing NOx-climate impacts under a multitude of weather patterns
 
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Seasonal variability of aircraft trajectories reducing NOx-climate impacts under a multitude of weather patterns

Publikationstyp
Conference Paper
Date Issued
2021
Sprache
English
Author(s)
Castino, Federica  
Yin, Feijia  
Grewe, Volker  
Yamashita, Hiroshi  
Matthes, Sigrun  
Baumann, Sabine  
Dietmüller, Simone  
Soler, Manuel  
Simorgh, Abolfazl  
Linke, Florian  
Lufttransportsysteme M-28  
Lührs, Benjamin 
Lufttransportsysteme M-28  
TORE-URI
https://hdl.handle.net/11420/46795
Citation
SESAR Innovation Days2021 : 11th SESAR Innovation Days, SIDs 2021, Virtual, Online, 7 December 2021 through 9 December 2021
Contribution to Conference
SESAR Innovation Days, SIDs 2021  
Scopus ID
2-s2.0-85160720055
Publisher
SESAR Joint Undertaking
Air traffic contributes to global warming through CO2 and non-CO2 effects, including the impact of NOx emissions on atmospheric ozone and methane, formation of contrails, and changes in the amount of stratospheric water vapour. The climate impact of non-CO2 effects is highly dependent on the background atmospheric conditions at the time and location of emission. Therefore, there is the potential of mitigating the climate impact of aviation by optimizing the aircraft trajectories. In the present paper, we focus on the properties of alternative trajectories which have the potential to minimize the climate impact of NOx emissions, under a multitude of weather patterns. This study aims at enhancing the understanding of the relation between NOx-climate impacts and routing strategies, by employing the European Center Hamburg general circulation model (ECHAM) and the Modular Earth Submodel System (MESSy) Atmospheric Chemistry (EMAC) model. To this end, we conduct 1-year simulations with the air traffic submodel AirTraf 2.0, coupled to the EMAC model. We optimize 85 European flights, considering the atmospheric conditions at the time and location of the flight, to calculate the expected climate impact from the emitted species through a set of prototype algorithmic Climate Change Functions (aCCFs). The mean flight altitudes of NOx-climate optimal trajectories showed seasonal and latitudinal dependencies. We found that the potential of reducing ozone effects from aviation NOx is subjected to a strong seasonal cycle, reaching a minimum in summer.
Subjects
aircraft trajectories optimization
air traffic management
climate impact reduction
nitrogen oxides emissions
DDC Class
380: Commerce, Communications, Transport
530: Physics
620: Engineering
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