Roughness Effects on the L-band Emission of Bare Soils: The T-REX Field Experiment - Alessandra Monerris; Enric Santanach; Mercè Vall-Llossera; Adriano Camps; Miquel Cardona; C. Cantered; Maria Piles (IEEE International Geoscience & Remote Sensing Symposium, IGARSS 2006, July 31 - August 4, 2006, Denver, Colorado, USA, Proceedings, 2006)