SMOS land validation activities at the Valencia Anchor Station

This paper presents an overview of the extensive and intensive activity carried out at the Valencia Anchor Station (VAS) site to contribute to SMOS (Soil Moisture and Ocean Salinity) land products validation. Special attention is dedicated to the various radiometry experiments hosted at the VAS that were performed at different spatial scales, from the plot scale to the regional scale (up to 50 km), using ground-based measurements airborne-based observations and SMOS products.