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List of Abstracts 100ozone, carbon monoxide, carbon dioxide, water vapor, cloud water, certain ovocs, condensation particles,DOAS, NO, NOy, aerosol and air sampling using glass containers, has been operating successfully on amonthly basis using four consecutive long distance flights, and has now been extended significantly. Newequipment comprises a cavity ringdown system for measuring the D/H and 18O/16O ratio in water, a similarsystem for in situ analyses of CO2 and CH4, an Optical Particle Counter, a new high sensitivity DOASsystem, new fast and accurate ozone and water analyzers, a convertor for NO2, and finally an 88 samplecapacity whole air sampler. At the time of writing this abstract the final stages of certification were beingabsolved. We will elaborate on our motivation for this extension, and show some possibilities of researchusing first results.P-Observations 1.28 ID:4383 15:35In-service aircraft for a global observation system (IAGOS)Andreas Volz-Thomas and the IAGOS-TeamResearch Centre JuelichContact: a.volz-thomas@fz-juelich.deUnderstanding the chemistry of our atmosphere and its reaction to human influences is vital in developingglobal solutions to tackle climate change and air quality. Passenger aircraft provide a unique platform fordirectly measuring atmospheric composition, particularly in the highly-sensitive tropopause region and forvertical profiles in the troposphere.The European MOZAIC programme (mozaic.aero.obs-mip.fr), which was initiated in 1993 in cooperationbetween European Scientific Institutions, Avionic Industry and five European Airlines, used five AIRBUSA340 aircraft operated by Lufthansa, Air France, Austrian and Sabena (later operated by Air Namibia) tomonitor atmospheric gases day by day. Starting with measurements of O3 and H2O in 1994, instruments forCO and NOy were added in 2001. MOZAIC has provided data from more than 100 million flight kilometresin the UT/LS and 50,000 vertical profiles in the troposphere. The European project CARIBIC (www.caribicatmospheric.com)took a different approach by monthly deploying an instrumented cargo container aboard aLTU Boeing 767 and later a Lufthansa A340-600 since 1997. The large set of measurements (18instruments) comprises those above as well as aerosol particles (number and composition), acetone,acetonitrile, mercury, hydrocarbons, halocarbons, and isotopic composition. A sophisticated inlet system forthe above species allows also for remote sensing by differential absorption spectroscopy. MOZAIC andCARIBIC data are available to the scientific community world-wide, and have been used in more than 200scientific publications.IAGOS (In-service Aircraft for a Global Observing System, www.iagos.org) prepares the transition ofroutine aircraft observations from the two individual research projects into a sustainable Europeaninfrastructure with enhanced measurement capabilities and global coverage. This is achieved by increasedinstrument reliability, lighter and smaller instruments, as well as new instrumentation, e.g., for carbondioxide or aerosol and cloud particles - key unknowns in climate modelling. And important aspect is thedevelopment of a suitable maintenance structure for world wide operation and the provision of near-realtimedata to centres engaged in air quality forecasting, for example within GMES.*IAGOS Team: J.P. Cammas (Laboratoire d'Aerologie, CNRS, Toulouse); F. Karcher (Meteo-France,Toulouse); R.L. Jones (University of Cambridge); M. Gallagher (University of Manchester), H. Schlager, A.Petzold (DLR, Oberpfaffenhofen); Y. Allouche (AIRBUS, Toulouse); T. Gill (British Airways,Hammondsworth); A. Waibel (Deutsche Lufthansa, Frankfurt); Christoph Gerbig (MPI-BGC, Jena); H.Franke (enviscope GmbH, Frankfurt); M. Hermann, (IFT, Leipzig), M. Paulin (CNES, Toulouse), L. BarrieiCACGP-IGAC 2010 12 July, 2010