The year 2020 was a complicated one for the whole world and for the Members and partners of the World Meteorological Organization (WMO). The beginning of 2020 was marked by the global pandemic of COVID-19 that impacted the work of organization through lockdowns and lack of access to the observational infrastructure. The report presented at the seventy-fifth session of the WMO Executive Council demonstrated that about 24% of activities were severely impacted by COVID-19. Despite these difficulties, the Izaña Atmospheric Research Center (IARC), which is part of the State Meteorological Agency of Spain (AEMET), continued its operations delivering outstanding science to the global atmospheric composition community.