Forest Ecosystem Monitoring Cooperative(802) 656-0683femc@uvm.eduwww.uvm.edu/femc705 Spear StreetSouth BurlingtonVermont05403United States of AmericaUnited States Environmental Protection Agency (EPA) Vermont Agency of Natural Resources Department of Environmental Conservation, Division of Air Quality and ClimatepartnerAmbient Air Monitoring for OzoneDetermine compliance with 8-hour National Ambient Air Quality Standard (0.070ppm)Ambient Air Monitoring for OzoneWhitneyBenjaminPoirotRichardLeonBennetLacaillade RobertBerschlingJennyair qualityair pollutionozoneairVT Ozone1990-04-01Measured ambient concentrations of ozone pollution to determine compliance with the National Ambient Air Quality Standard. Sample duration is 1-hour.Ground-level ozone is formed through a chemical reaction between air-born organic compounds (VOCs) and nitrogen oxides (NOx) when exposed to sunlight1. High levels of ozone exposure can cause leaf damage, which can reduce the efficiency of processes such as photosynthesis. Foliar damage due to ozone exposure is the first visible sign of injury, and indicates impaired physiological processes in the leaves1. For some trees, ozone exposure can increase the likelihood of secondary stressors, like damage caused by diseases, insects, or weather events. Ozone is expressed as the average concentration (in parts per million) between the hours of 8:00 am and 8:00 pm2 from April 1 to September 30. Due to regulations, ground-level ozone pollution has improved gradually over the past decade.Z0036_3400_MDIFESVMC.36.3400mySQLhttps://vmc.w3.uvm.edu/vmcdevel/CI4/data/archive/project/ambient-air-monitoring-for-ozone/dataset/vt-ozonecounty_codecounty_codeintdate_localdate_localdateYYYY-MM-DDsample_measurementsample_measurementdecimalsite_numbersite_numberintstate_codestate_codeinttime_localtime_localtimehh:mm