Arrival with coffee and tea Room: Director's house, room Stratus

Welcome to the attendees and special guests from Belgian defence.

• Ronald Van der Linden

Room: Director's house, room Stratus We welcome Dries Van Baelen, radio engineer and Emilien Juckler from MeteoWing, both at Belgian defence.

Assessing long-term changes in stratospheric water vapour observed from space

• Daan Hubert (BIRA-IASB)

Room: Director's house, room Stratus Changes in water vapour have an impact on surface climate, but are not well constrained due to differences between observations. In this study we quantify and compare variability and long-term changes in three merged satellite Climate Data Records of vertically resolved water vapour in the stratosphere.

ICME impact on plasma turbulence and complexity at Venus, Earth and Mars.

• Marius Echim (IASB)

Room: Director's house, room Stratus We investigate the effects of ICME on the properties of turbulence and intermittency detected in the magnetosheath of Venus and Mars and compare with properties detected in the Earth’s magnetosheath when impacted by the same interplanetary event. We select two Interplanetary Coronal Mass Ejection (ICME) events, one in January 2009 which hit Venus and Earth and the second one in 2018 which hit Earth and Mars. We use magnetic field and plasma data provided by Venus Express, Cluster and MAVEN on which we apply a full set of analysis methods including computation of Power Spectral Density (PSD), Probability Density Functions (PDFs) and the flatness. We compare the spectral index and the intermittent range of scales (where we observe scale dependent/increasing flatness) obtained for the non-magnetized planets with the same turbulence descriptors obtained for the Earth. We also compare planetary magnetosheath turbulence and intermittency properties observed during space weather events with quiet times results, for each planetary system.

Mother's Day Storm - part 1 Room: Director's house, room Stratus Sabrina, David, Marie, Christophe, Antonio - Solar Observations Viviane, Tobias, Hervé, Dani - Near Earth Observations Erwin, Nicolas, Jean-Marie, Yana - Sources of Space Weather Impacts Dries - Impacts in HF operations seen by users

Mother's Day Storm, part 2 Room: Director's house, room Stratus Sabrina, David, Marie, Christophe, Antonio - Solar Observations Viviane, Tobias, Hervé, Dani - Near Earth Observations Erwin, Nicolas, Jean-Marie, Yana - Sources of Space Weather Impacts Dries - Impacts in HF operations seen by users

STCE structure & future

• Ronald Van der Linden

Room: Director's house, room Stratus

Announcement STCE 20 years Room: Director's house, room Stratus