Changing ozone sensitivity in Fujian Province, China, during 2012-2021: Importance of controlling VOC emissions.

In the troposphere, ozone (O) formation can be limited by NOx, VOCs, or both, complicating efforts to reduce O by controlling its precursors. This study used formaldehyde (HCHO) data and nitrogen dioxide (NO) data from the Ozone Monitoring Instrument (OMI) to analyze O formation sensitivity in Fujian from 2012 to 2021. Over the past decade, an 8.