17-21 November 2008ESWW51 SWWT Ionospheric Effects Topical Group Agenda –The Low-latitude Ionospheric Sensor Network (LISN): The First Distributed Observatory in South America Patricia Doherty, Boston College –Ionospheric mid and large scale perturbation characteristics N. Jakowski, C. Mayer, C. Borries, German Aerospace Center –ESA's priorities for ionospheric research Betram Arbesser-Rastburg, ESA –Ionospheric scintillation monitoring and modelling Y. Béniguel, IEEA

17-21 November 2008ESWW52 Wrap up ESA's priorities –Ionospheric characteristics affecting ESA missions (P-, C- and L-band) –Long-term collection of ionospheric data, improved modelling of distribution of electron density, improved statistics of ionospheric conditions, linking of ionospheric conditions to system performance Ionospheric perturbations monitoring –Customer oriented approach at DLT (SWACI service) –Many products (perturbations, propagation of disturbances, TIDs,…) Scintillation monitoring and modelling –In the framework of COST 296 action –Observations from high lat. to equatorial regions –Scintillation data, statistics, models => large share accessible via web portals

17-21 November 2008ESWW53 The Low Latitude Ionospheric Sensor Network (LISN) 70 GPS Receivers TEC, TIDs Scintillation 5 Ionosondes Virtual height Bottomside density profiles Meridional winds Nighttime capability 5 Magnetometers Monitor ionospheric currents Measure Vertical plasma drifts To address key questions about the physics of the equatorial ionosphere Develop nowcast/forecasts capabilities on the onset of Spread F Jicamarca Installed Planned