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Arctic Ozone Loss

Every year since 2004, between February and April, a satellite validation campaign is held at the Polar Environment Atmospheric Research Laboratory (PEARL) in Eureka, Nunavut (80◦N, 86◦W). The reason for choosing these months is that this is the most chemically active time of year in the Arctic when the sun starts to rise and the start of Arctic spring. During this time Eureka experiences a significant number of satellite overpasses.

There are as many as 12 ground-based instruments performing trace gas measurements such as:

  • ACE-FTS (PARIS - Portable Atmospheric Research Interferometric Spectrometer)
  • ACE-MAESTRO (ground-based)
  • SPS (SunPhotoSpectrometer)
  • Two zenith-viewing UV-visible grating spectrometers
  • Bomem DA8 Fourier transform spectrometer
  • Bruker 125HR Fourier transform spectrometer
  • SAOZ (Systeme d’Analyse par Observations Zenithales)
  • Differential Absorption Lidar
  • Several Brewer spectrophotometers
  • Balloon-borne ozonesonde and radiosonde

A complete list of instruments and information about the campaigns can be found at https://eureka.physics.utoronto.ca/.