Annual Average Daily Dose of UV Irradiance

The Annual Average Daily Dose of UV Irradiance (J/m2) is calculated using data sourced from the Ozone Monitoring Instrument (OMI) (aboard the NASA Aura spacecraft) Level 2 Surface UV Irradiance Product. This data, provided by the Environmental Remote Sensing group at the Rollins School of Public Health at Emory University, is grouped by county and year. The daily Erythemal Daily Dose (EDD) values are averaged for each group, with any missing values excluded from the dataset. The sums of these averages are then divided by the number of days in the year to yield the annual average, which is expressed in Joules per square meter (J/m2). This indicator reflects the typical daily exposure to UV irradiance for the specified geographic areas This calculation method is provided by the CDC National Environmental Public Health Tracking (https://ephtracking.cdc.gov/indicatorPages )