On the Variation in the Volumetric Evolution of CMEs from the Inner to Outer Corona

Some of the major challenges faced in understanding early evolution Coronal Mass Ejections (CMEs) are due to limited observations inner corona ($<\,3$ R$_{\odot}$) and plane sky measurements. In this work, we have thus extended application Graduated Cylindrical Shell (GCS) model coronal from ground--based coronagraph K--Cor Mauna Loa Solar Observatory (MLSO) along with pair COR--1 onboard Terrestrial Relations (STEREO). We study rapid initial acceleration width expansion phase 5 CMEs white-light lower heights. also modelled volume these report for first time, a power law dependence CME distance Sun. further find ellipsoidal leading front conical legs follow different laws, indicating differential through CME. The reveals two distinct laws total outer corona, suggesting mechanisms at These results besides aiding our current on evolution, will provide better constraints initiation propagation models. Also, since loss STEREO-B (and hence COR--1B data) 2016, modified GCS presented here still enable stereoscopy 3D white-light.