FO3X (Ozone FACE – free air controlled exposure): An innovative infrastructure for a realistic assessment of the impact of tropospheric ozone on vegetation
Published 2025-05-06
How to Cite
Copyright (c) 2025 Leonardo Lazzara, Elena Marra, Barbara Baesso Moura, Jacopo Manzini, Andrea Viviano, Cesare Garosi, Yasutomo Hoshika, Elena Paoletti

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Abstract
Tropospheric ozone (O3) is an oxidative air pollutant causing a significant negative effect on forest species. Therefore, it is essential to develop exposure systems that can provide realistic estimates of plant responses to O3 under real world conditions. This article focuses on an O3 Free-Air Controlled Exposure (FACE) system developed in Italy (FO3X facility). Since 2015, the FO3X has been running as a last generation O3 FACE facility at the CNR experimental garden in central Italy, which is a unique facility in Mediterranean Europe within the AnaEE (Analysis and Experimentation on Ecosystems) European research infrastructure. This facility allows the exposure of plants to three levels of O3 concentrations (ambient, 1.5- and 2.0-times ambient concentration), with main environmental variables continuously monitored. This paper also introduces the five modern O3 FACE facilities for plant species currently running in the world and a further technological development with perspective for climate change studies.
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