The University of Toronto Atmospheric Observatory (TAO) is located in the heart of downtown Toronto.  TAO is being used to conduct long-term measurements of stratospheric and tropospheric trace gases for studies of urban pollution and mid-latitude atmospheric chemistry, and satellite data validation.  Read more about TAO here
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Our instrument is a high-resolution Fourier transform infrared (FTIR) spectrometer.  TAO also houses several other pieces of equipment including other spectrometers, a weather station, lightning detector, and a suntracker.  Read more about our facilities here


TAO runs every weekday, weather permitting.  We have our own weather station that makes continuous measurements of temperature, solar radiation, wind speed, and precipitation.  Learn more about our weather station and current weather conditions in downtown Toronto here