Splinter 1: Space science & weather Chair: J. De Keyser Summary: F. Clette 03/06/20101STCE: Space Science & Weather

Opportunities and issues Key topics identified as a starting point: – Tomography: Auroras Plasmasphere Solar corona Ionosphere – Particle acceleration: Solar flares Aurora Solar wind (shocks) Ring current in radiation belts – BRAMS meteor network: Impact risk modeling (application) Two aspects – Fundamental sciences – Operational services 03/06/2010STCE: Space Science & Weather2

Tour of work packages Operational WPs: – ROB A.1 (WDC) Needs background solar wind models that can be run in real time, not too sophisticated (Cf.Wang-Sheeley) > need external collaborations Open to other indices or forecasts > need to identify possible examples – BISA B.1/2: Mission/data center at BUSOC: So far, centers for PICARD and PROBA2 have been developed independently. PROBA2 wants to keep an immediate proximity to the data. – BISA D.1: SW services Focus on SPENVIS and educational aspects, ESA SW portals (COST programs) Development of a document repository jointly with SIDC and SoTerIA accessible for the whole SW community: Opportunity for inclusion of statistical models or physical models and produce small predictions: – Trying a few products and testing the interest of users. – Need to identify applicable tools Observational WPs: – ROB-A.2 (G-B solar instrum): Solar data source Possible cross-studies about long term geomagnetic indices 03/06/2010STCE: Space Science & Weather3

Tour of work packages Research WPs: – ROB-A.3 Coronal heating: Opportunity for physical modeling of reconnection process (see below BISA C.1) – ROB-A.4 Solar atmosphere studies: No tomography but simple triangulation (loops, CMEs; STEREO data) No internal particle acceleration know-how (theory). – ROB B.1: GNSS 4-D tomography So far, tools from english collaborators, no internal modelling development. – ROB B.2/3: GNSS TEC effects Opportunity to develop a model of the plasmasphere-ionosphere connection – Advantage: TEC provides many sampling points every 20 minutes. – Possible synergy with BISA WP (V. Pierrard) and RMI (Ionospheric sounding group) – BISA C.1: Magnetosphere Opportunities: plasma phenomena, like magnetic reconnection, observed in- situ in the magnetosphere > applicable to the solar corona – Uncertain that the phenomena can be transposed easily to the solar conditions – Maybe common aspects for substorms 03/06/2010STCE: Space Science & Weather4

Tour of work packages Research WPs: – BISA C.2 Experiments: BRAMS meteor network: – Opportunity for impact risk modeling (application) – BISA C.3 Fundamental science: Focus in kinetic models: kinetic Alfven waves, application to the plasmasphere. Physics-based modelisation of the solar wind: – Need boundary conditions at the Sun: number density and temperature (boundary values or better, radial profiles) – ROB works on large-scale effects (~300 km per pixcel) where MHD is appropriate: kinetic models have not been considered until now. 03/06/2010STCE: Space Science & Weather5

New ideas and upcoming opportunities? Tomography: potential topic but not currently developed (mostly users of existing external packages) Background solar wind models: – Reciprocal but unmatched needs: RWC services need an operational real-time model for forecasting BISA modeling needs solar boundary conditions (but currently output limited to spherical symmetry) – Large long-term effort Particle acceleration: – Potential for fundamental science between ROB A.3/4 and BISA C.3 – Upcoming FP7 proposal in preparation (application). Collaboration between BISA C.3 and ROB-A.1/2 on the use F10.cm as a proxy for ionospheric conductivity. BRAMS meteor experiment Space Situational Awareness program 03/06/2010STCE: Space Science & Weather6