1. WP3: Science Planning and User Engagement Anita Aikio Coordinators: UOulu (FI) and STFC (UK) Objectives: Ensure consistency between the Science Case and the parameters of the designed system Extend the user base beyond the existing EISCAT user community

2. WP3: Science Planning and User Engagement Realisation (tasks): 1.Form Science Working Group (SWG) Existing EISCAT users together with members of the other science communities (e.g. atmospheric science, space weather, global positioning), which EISCAT_3D plans to address. M Memberships will be regularly rotated 2.Initial revision of Science Case and Performance Specification and fed back Radar performance specifications for each science topic will be defined and fed back to the preparation of the Performance Specification Document (in WP6) Initial summary of the supporting instruments required for different science topics will be compiled and included in the revised Science Case

3. WP3: Science Planning and User Engagement Realisation (tasks): 3.Regular reviews of Science Case and feedback to software and hardware development Continuous contact with the widest possible user community Interaction with planning of EISCAT_3D experiments (WP11) Interaction with planning of data products (WP13) 4.User Engagement Workshops Specific WS for middle and lower atmosphere community Specific WS for applications and modelling communities

4. WP3: Science Planning and User Engagement Details: Science Working Group (SWG) Helps to compile a list of contact persons/groups in prospective new EISCAT_3D user communities (potential new members) Works to keep the Science Case up-to-date and to include new ideas from new user groups Specific Workshops Middle and lower atmosphere community, May 2011 Appplications and modelling communities, May 2012 Travel money for attendees exist

5. Some wishes collected from this meeting Interferometric measurements for mesosphere, 3D measurements from troposphere to mesosphere D-region 3D imaging for atmospheric chemistry Magnetosphere-ionosphere-atmosphere coupling: EF, ion velocity and Ne from 100 km x 100 km Adjust beam shape to dark area Adjust integration times for each pixel according to signal strength Twisted radar beams (circular array, phase and amplitude control of each antenna element) Small-scale auroral features: as good as possible temporal and spatial resolution

6. Some wishes collected from this meeting Optical infrastructure and rocket measurements for auoral studies Heater infrastructure for dusty plasma studies Sub-beamwidth structures: interferometry Meteoroids: TX at Esrange, 3 near and 3 far RX sites at 120 o separation (Asta’s configuration) IPS: BW> 10 MHz, long baselines with LOFAR Space Weather needs continuous observations NEIALs: h> 800 km should be monitored regularly O + and H + outflow: more power Satellite (SWARM) coordination: vector measurements (EF, vi, winds) are important

7. Some wishes collected from this meeting Heating exps: radar and heater co-located (II B), 1 km vertical and 1 s resol. Mesoscale 3D electrodynamics: E,  H,  P, J, j II (x,y,z), u, v e, v i, volume 300km x 300km x 50km, hor. resol. 50 km Planetary radar in collaboration with LOFAR, transmission at low elevation to south (min 30 o elevation), Hydrogen Maser clocks My personal view from the next slide: Aurora: Resolution 500 m horizontal, 500 m vertical, time resol. 0.1 s for Ne, 1 s for electric field

8. Aurora: Resolution 500 m horizontal, 500 m vertical, time resol. 0.1 s

9. Finally, EISCAT_3D should serve the various user groups in the best possible way, therefore input from users is crucial! User contact points: SWG SOC Uppsala meetings EISCAT_3D mailing list We welcome any comments and suggestions regarding WP3 possible new users