1. Zeppelin NT, a new Platform for Atmospheric Studies in the Planetary Boundary Layer Frank Holland, FZJ 3rd COPS and GOP Workshop Univ. Hohenheim, 10-11 April 2006

2. Zeppelin NT – airship characteristics Engine-driven, near-equilibrium, steerable aircraft - High manoeuvrability due to swivelling engines Consists of a rigid framework - support of cabin, engines and exp. platforms Permission for instrumental flight - Night time and cloud missions are possible Takeoff and landing requirements - airfield of 300m diameter + 3 ground people

3. Zeppelin NT – performance data Scientific payload up to 1000 kg (easily interchangeable) Flight speed 0 – 115 km/h Operating altitude: 20 – 2600 m Range: 1100 km Available electrical power: 6 kW (28 VDC)

4. Zeppelin NT – mission characteristics Fast measurements of vertical profiles - Sink / climb rate of up to 5-6 m/s Measurements of locally limited phenomena - Hover permanently over a fixed position Measurements along Lagrange trajectories - Drift with the surrounding air mass Long-term measurements - Flight endurance up to 20h

5. Zeppelin NT – experimental platforms

6. Time line of Zeppelin project 2004-07: Zeppelin Workshop in Jülich 2006-01: Final version of Zeppelin white paper 2006-03: Top-platform ordered 2006-05: Discussion with Zeppelin on additional electrical power supply, cabin layout, and campaign in 2007. Winter 2006/07: Integration of top-platform 2007-04: Test flights 2007-07/08: Participation in COPS-TRACKS field campaign.

7. User community Forschungszentrum Karlsruhe Universität Heidelberg Universität zu Köln Univ. of Leicester, UK University of Manchester, UK MPI für Chemie, Mainz Paul-Scherrer Institute, Villingen, Switzerland Institut für Troposphärenforschung, Leipzig Energy Research Centre, Petten, Netherlands

8. Aims for field campaign in 2007 Investigate gas-phase oxidation processes involving free radicals that directly affect the abundances of reactive gases. Study processes that form aerosols either directly or indirectly f. gaseous precursors. Explore transport processes that distribute emissions and secondary oxidation pro- ducts by advection and turbulent diffusion. We are open for requests from the COPS community.

9. Offer of Zeppelin for field campaign Charter of the Zeppelin NT for a 3-week period in summer 2007 including 135 flight-hours for 495 T€. Decision on 3-week period until 2006-06- 30. The Zeppelin will be based in Friedrichs- hafen.

10. Questions?