The workshop “ESMValTool: Systematic processing of large volumes of climate data” was held on Tuesday 14 and Thursday 16 November under the auspices of the Department of Atmospheric and Ocean Sciences (DCAO), the Centre for Marine and Atmospheric Research (CIMA) and IFAECI. It was delivered by Mg. Pep Cos from the Barcelona Supercomputing Center (BSC) with the assistance of Julia Mindlin, Nadia Testani, Dalia Panza, Anna Sörensson, and Leandro Díaz from CIMA/DCAO/IFAECI. The thirty participants, including students, teachers, and researchers came from DCAO/CIMA/IFAECI, the National University of La Plata UNLP, and the National Weather Service (SMN).