Ozone in our air - friend or foe? - depends on where
Detailed Description
Through an agreement between the USGS-Hawaiian Volcano Observatory, US EPA, and the NPS, a specially configured spectrophotometer measures potentially harmful ultraviolet B (UV-B) radiation as well as column amounts of ozone (O3), sulfur dioxide (SO2) and nitrogen dioxide (NO2) present in the atmosphere between the instrument and the sun.