3D Speed Reconstruction of CME Events during Solar Cycle 24

Coronal mass ejections (CMEs) are a form of solar activity that has a major influence on space weather and requires further investigation of its properties.Calculating their 3D velocities allows for better understanding of their origin and true structure.We analyzed the correlation between the 2D velocities measured by SOHO/LASCO observations and the 3D velocities of 14 events of solar cycle 24, reconstructed using the StereoCAT online tool that allows simultaneous multi-instrumental measurements.Despite our relatively small sample and that StereoCAT analysis is subject to limitations, including human selection of tie-points, varying spacecraft viewing geometries, and incomplete data coverage for some events, we found extremely strong relationship between projected and "true" velocity of explored CMEs.