Characterizing the Chemistry of the Polar Stratosphere above Eureka, Canada with Ground-Based and Satellite Instruments During IPY

• Main Authors: Adams, C., Strong, K., Lindenmaier, R., Batchelor, R., Park, J.-H., Fraser, A., Mendonca, J., Drummond, J. R., Goutail, Florence, Pazmino, Andrea, Walker, K. A., Bernath, P., Boone, C., Degenstein, D., Mclinden, C. A., Manney, G., Daffer, W.
• Other Authors: Department of Physics Toronto, University of Toronto, National Center for Atmospheric Research Boulder (NCAR), Department of Physics and Atmospheric Science Halifax, Dalhousie University Halifax, STRATO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Department of Chemistry York, UK, University of York York, UK, Department of Chemistry Waterloo, University of Waterloo Waterloo, University of Saskatchewan Saskatoon, Canada (U of S), Air Quality Research Division Toronto, Environment and Climate Change Canada (ECCC), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH)
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2010
• Subjects: [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]; Eureka; International Polar Year; IPY; Nunavut
• Online Access: https://hal.science/hal-00833439

Arctic stratospheric ozone varies greatly year-to-year and season-to-season as it depends on stratospheric dynamics and concentrations of other highly variable trace gases. One of these trace gases is NO2, which is involved in catalytic ozone depletion cycles in the upper stratosphere but can prevent spring-time ozone depletion in the lower stratosphere. NO2 has a short lifetime in the stratosphere, so concentrations depend strongly on available sunlight, which varies greatly throughout the year in the Arctic. We will investigate the variability of Arctic ozone, NO2 and related constituents through the sunlit parts of the International Polar Year with measurements taken at the Polar Environment Atmospheric Research Laboratory (PEARL) in Eureka, Nunavut, Canada (80oN, 86oW). We will compare measurements from three ground-based UV-visible spectrometers and a Bruker 125HR Fourier transform infrared spectrometer with ACE and OSIRIS satellite measurements. Furthermore, we will discuss the seasonal, day-to-day, and diurnal variations of these species and will relate these measurements to available sunlight and dynamical conditions above Eureka.