Our team has extensive experience in simulation of the physics of the snow cover and microwave radiative transfer for Earth Observation applications. Our members worked on different stages of the ESA SMOS mission: from the onset, quantifying soil moisture retrieval errors and helping determine the algorithms, to the development of satellite-derived product stage with the Finnish Meteorological Institute's SMOS Soil Freeze/Thaw product. Our team’s research showed large uncertainties in current snow mass measurement techniques and one of the projects CORES is currently involved in focuses on improving these measurements. Our research covers the use of snowpack evolution models to simulate the size of snow particles and how these relate to the microstructure used in microwave emission models. CORES is part of a European consortium to develop a community microwave scattering model for active and passive remote sensing of snow.