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Reviving Stratospheric Ozone Monitoring with Differential Absorption LIDAR: Results and Future Prospects

This study showcases the revival of stratospheric ozone monitoring using Differential Absorption LIDAR in Eureka, Nunavut. Results from 2016-2018 data sets indicate a good agreement with ozonesonde data, with lower ozone concentrations observed in 2018 compared to 2017. The study also notes a possible Sudden Stratospheric Warming event in February 2018. Ongoing work includes reprocessing data sets, intercomparison with other instruments, and application of Optimal Estimation Method to enhance data analysis. Future prospects involve expanding monitoring to include water vapor, temperature, and density products. This research is supported by NSERC, ECCC, and CSA.

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Reviving Stratospheric Ozone Monitoring with Differential Absorption LIDAR: Results and Future Prospects

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  1. Eureka Stratospheric Ozone Differential Absorption LIDAR revived Alexey B. Tikhomirov1 Emily McCullough1 James R. Drummond1 Ghazal Farhani2, Robert J. Sica2 Thierry Leblanc3 1 Dalhousie University, Halifax, NS, Canada 2 University of Western Ontario, London, ON, Canada 3 Jet Propulsion Laboratory, Wrightwood, CA, USA TOLNet/NDACC LWG Meeting 7-11 May 2018, Huntsville, AB alexey.tikhomirov@dal.ca

  2. PEARL TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  3. DIAL specification System Developer: Optech Inc & YorkU, 1992 Location: 80N, 86W, Eureka, Nunavut, Canada Range: 1-60 km Resolution: 150 - 300 m typical Products: stratospheric O3, tropospheric H2O, temperature, gravity waves Laser Type: XeCl (IPEX – 848, LightMachinery) Wavelengths: 308 nm 353 nm (Raman H2) Output Energy: 152 mJ 20 mJ Pulse Duration: <20 ns Repletion Rate: up to 200 Hz Beam Divergence: 0.15 mrad Receiver Telescope Type: Newtonian Aperture Dia.: 1 m Focal Length: 2.5 m FOV: 0.2 to 1.0 mradWavelengths: 308, 353, 331.9, 385, 405.3 nm FWHM: 20, 20, 2, 0.5, 1 nm Data Acquisition: Photon counting TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  4. DIAL schematics TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  5. DIAL observations: 2016-2017 2016, spring 2016, fall 2017, spring 2017, fall 2018, spring 2018, fall dates TBD TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  6. 2008 Results Altitude (km) Ozone (molecules cm-3) K. Strawbridge etal., 2008, ECCC TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  7. 2017 results: DIAL ozone TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  8. 2017 results: DIAL vs Ozonesondes TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  9. 2017 results: Ozone maps TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  10. 2017 results: Ozone maps TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  11. 2017 results: Ozone maps TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  12. 2017 results: Column densities TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  13. 2017 results: OEM TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  14. PMT issue Symptoms: strong signal fluctuations in 308 nm channel Reason: loose contacts in dynode voltage divider TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  15. 2018 results: DIAL observation time TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  16. 2018 results: DIAL ozone TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  17. 2018 results: DIAL vs Ozonesondes TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  18. 2018 results: DIAL vs Sondes Radiosonde TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  19. 2018 results: DIAL vs Ozonesondes Radiosonde TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  20. 2018 results: DIAL vs Ozonesondes Radiosonde TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  21. 2018 results: DIAL vs Ozonesondes Radiosonde TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  22. DIAL: 2017 vs 2018 2017 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

  23. Summary • DIAL traditional ozone retrieval results are in a good agreement with ozonesonde data except of 7.5-10 km region • DIAL OEM ozone retrieval results are in a reasonable agreement with ozonesonde data including 7.5-10 km region • Ozone concentrations in 2018 are lower than those in 2017 • Possible Sudden Stratospheric Warming is observed in Feb 2018 • Work in progress: • Reprocessing of 2016-2018 data sets for data submission • Detailed intercomparison with other instruments (ACE FTS, Brewer, GBS, E-AERI, ozonesondes) • Application of OEM to DIAL data sets (G.Farhani) • Future work: • Water vapor, temperature and density products PEARL research is supported by the Natural Sciences and Engineering Research Council (NSERC), Environment and Climate Change Canada (ECCC) and the Canadian Space Agency (CSA) 13-18 June 2016 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

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