We envision a world where environmental decisions are grounded in reliable, science-based information and we strive to be a central part of that process. Air Quality Essential Climate Variables Satellite Cal/Val Observation Technology LATEST NEWS Search Articles Events Projects Announcements Machine-Learning-Driven Reconstruction of Organic Aerosol Sources across Dense Monitoring Networks in Europe Use of mobile aerosol dosimeter to estimate seasonal concentrations of ultrafine particles Changes in the thermal stress across Europe between 1940–2023 Air pollution mapping and variability over five European cities ACTRIS Week 2025 Participation, 21-23 October 2025 European Lidar Conference 2025 Participation, 10 – 12 September 2025 European Aerosol Conference 2025 Participation, 31 August – 5 September 2025 Visit of experts from the Institut Scientifique de Service Public (ISSeP), June 16, 2025 CARS Training Workshop at RADO-Bucharest, March 25 –28, 2025 Supporting the Operation of Romanian Facilities within the ACTRIS ERIC Research Infrastructure – RO-ACTRIS-ERIC Multi-sensor synergies for improved weather-climate-environmental products and applications, to advanceEuropean services supporting green transition – PANORAMA Investigating Methane for Climate Action – IM4CA The CAMS RO Project Integrated Research Infrastructure Services for Climate Change Risks – IRISCC The 32nd International Laser Radar Conference! July 5-10, 2026 – Hiroshima, Japan The 2026 ACTRIS Science Conference! April 20-23, 2026 – Oslo, Norway A Genuine Autumn Episode with Heavy Precipitation Reflected in the Measurements at the RADO-Bucharest Station during October 7–8, 2025 Pantelimon Warehouse Fire, Monitored by the RADO-Bucharest observational platform of INOE 2000 ACTRIS September 2025 Newsletter #29 More Articles… More events… More projects… More announcements … actrisro ACTRIS-RO is the Romanian component of the ACTRIS pan-European research infrastructure. Stunning drone shot of the Climate Change Observat Throwback to October 2024, when we celebrated the A beautiful Thursday afternoon at the Măgurele Ce Follow on Instagram