The European Space Agency is organising a workshop on calibration, validation and evolution of land products. Scientists and Cal/Val experts are provided with the opportunity to present latest results from their on-going research, including the evolution of products, the development of validation, the inter-comparison methodologies and the evolution of algorithms. The workshop will focus on optical imaging sensors from ESA missions (MERIS, (A)ATSR, PROBA-V, etc.), ESA Third Party Missions (LANDSAT, ALOS, etc.), and national missions. During this workshop results from recently reprocessed land data sets will be presented and contributions for future ESA missions using existing data sets and validation infrastructures are encouraged. The workshop will be held at ESA/ESRIN in Frascati, Italy, January 28-30, 2014.