REACT4C (FP7) Climate optimised Flight Planning

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1 REACT4C (FP7) Climate optimised Flight Planning Sigrun Matthes DLR, Institut für Physik der Atmosphäre and REACT4C Project Team Volker Grewe (DLR), Peter Hullah (Eurocontrol), David Lee (MMU), Christophe Blondel (Airbus), Keith Shine (Univ. Reading) 1

2 Reducing Emissions from Aviation by Changing Trajectories for the Benefit of Climate

3 REACT4C Collaborative Project & scientific approach Reducing Emissions from Aviation by Changing Trajectories for the benefit of Climate Overview on project consortium Objective and optimisation approach Work structure for environmental flight planning Achievements and results

4 REACT4C Consortium REACT for c = react for climate Reducing Emissions from Aviation by Changing Trajectories for the benefit of Climate FP7 Collaborative project (CP) Coordinator: Sigrun Matthes (DLR) Duration: Jan Dec 2012 Total costs: 4,2 Mio (funds: 3,2 Mio ) DLR, DE Airbus Operations, FR CICERO, NO EUROCONTROL Experimental Centre, FR MMU, UK UK Met Office, UK University Reading, UK University Aquila, IT

5 Overall objective of REACT4C Environmental Flight Planning REACT4C will address inefficiencies which exist in the aviation system with respect to fuel consumption and emissions by investigating the potential of alternative flight routing for lessening the atmospheric impact of aviation. Main objectives of REACT4C are to explore the feasibility of adopting flight altitudes and flight routes that lead to reduced fuel consumption and emissions, and lessen the climate impact; to estimate the overall global effect of such optimized flight routing measures in terms of climate change. Impact of CO 2, NO x, sulphate and black carbon aerosols and contrail-cirrus are considered

6 Modelling Chain Climate-optimized flight planning Domain - Phase 1: North Atlantic Expand a flight planning tool in order to consider climate impact Calculate cost functions for impact of individual emissions, e.g. Nitrogen Oxides (NO x ), Particulates, Contrails, Water vapour Include above cost functions in flight planning tool for performing route optimisation (environmental flight planning) Optimising for e.g. minimal operational costs, but also minimal climate impact

7 Aviation climate impact Overview Climate impact of aviation emissions emitted compound (direct & indirect effect) CO 2, black carbon (soot) - direct NO x (O 3, CH 4 ) H 2 O (contrail cirrus) soot (AIC, aviation induced cloudiness) Lee et al., 2010 (IPCC) Climate impact of non-co 2 emissions depends time and position of aircraft actual weather conditions (processes, transport pathways, temperature, humidity) background concentrations Matthes, Jöckel et al

8 Classification Identifying winter weather types The weather types are obtained by splitting the NAO-EA phase space to obtain robust, frequently occurring patterns: EA NAO Contours = Z250 anomalies, arrows = climatological mean wind Derived from indices calculated at 500hPa, from Keith Shine, Emma Irvine (University of Reading, UK)

9 Classification Winter weather types Eastbound Westbound 1. Strong zonal jet 2. Strong tilted jet 3. Weak tilted jet 4. Strong confined jet Keith Shine, Emma Irvine (University of Reading, UK)

10 Workplan Structure Meteorology Modelling Chain Green Aircraft Mitigation Estimates

11 Aviation Mitigation studies - REACT4C Data Multimodel Assessment Updated emission inventory based on CAEP/8 movement data and mitigation scenarios compiled Multimodel intercomparison is performed to update aviation climate impact estimates Estimate uncertainty in current estimates of aviation climate impact REACT4C Data Distance & fuel, based on CAEP/8 movement data prepared by Lee, Owen (MMU)

12 Mitigation studies Changes in cirrus (contrail cirrus) net RF young contrails net RF contrail cirrus 4.3 mw/m mw/m 2 Radiative forcing of young contrails and contrail cirrus simulated by ECHAM4- CCMod using AERO2k inventory (left) Burkhardt and Kärcher, 2009 mw/m 2 Recent article Burkhardt and Kärcher (2011)

13 Green Aircraft - Pre-design Assessment of (1) climate optimized flight profiles (or trajectories) and (2) resulting pre-design requirements should be performed REACT4C will deliver fundamental concepts of aircraft that are better suited for environmentally flight routing, which might have the potential to enter the Clean Sky JTI in a later phase Minimizing contrail formation might require for individual flights to perform shallow step climbs and descents (avoid shallow supersaturated regions) Minimizing climate impact via NO x requires avoidance of regions, in explicit alternative tracks, by analysing optimal wind conditions for alternative altitudes Degrees of freedom in pre-design optimisation Wing area Engine thrust Wing aspect ratio Wing sweep Wing relative thickness Engine type Cruise Mach number Christoph Blondel (Airbus)

14 Workplan Structure Meteorology Modelling Chain Green Aircraft Mitigation Estimates

15 Summary Status & achievements - First project year Classification of meteorological situations in North Atlantic: 5 classes in winter, 3 classes in summer (University Reading, UK Met Office) Modelling chain from meteorology to flight planning tool: first set-up finalized (Eurocontrol, UKMO, University Reading, DLR) Updated mitigation emission scenarios based on CAEP/8 movement data (MMU, DLR, CICERO Oslo) Green aircraft pre-design study identified respective study parameters, flight profiles and requirements (Airbus, DLR) Expert Panel Stakeholder involvement REACT4C Expert panel meeting - regular meetings and workshops

16 Thank you! Thank you! Questions? Questions?

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