What Does AOT40 Stand For?

AOT40 stands for Accumulated Ozone Exposure Over A Threshold Of 40 Ppb

AOT40, or Accumulated Ozone Exposure Over A Threshold Of 40 Parts Per Billion, is an environmental indicator used to assess the cumulative exposure of plants and ecosystems to ozone concentrations exceeding 40 ppb. This metric is vital for understanding the potential impact of ozone pollution on vegetation and assessing air quality regulations. AOT40 is commonly calculated over a specific time period and is instrumental in environmental monitoring and policy-making related to air quality and ecosystem health.