Eureka Stratospheric Ozone Differential Absorption LIDAR revived

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Presentation transcript:

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

TOLNet/NDACC LWG Meeting, Huntsville, AL, USA PEARL May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

TOLNet/NDACC LWG Meeting, Huntsville, AL, USA 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 mrad Wavelengths: 308, 353, 331.9, 385, 405.3 nm FWHM: 20, 20, 2, 0.5, 1 nm Data Acquisition: Photon counting May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

TOLNet/NDACC LWG Meeting, Huntsville, AL, USA DIAL schematics May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

TOLNet/NDACC LWG Meeting, Huntsville, AL, USA DIAL observations: 2016-2017 2016, spring 2016, fall 2017, spring 2017, fall 2018, spring 2018, fall dates TBD May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

TOLNet/NDACC LWG Meeting, Huntsville, AL, USA 2008 Results Altitude (km) Ozone (molecules cm-3) K. Strawbridge etal., 2008, ECCC May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

TOLNet/NDACC LWG Meeting, Huntsville, AL, USA 2017 results: DIAL ozone May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

2017 results: DIAL vs Ozonesondes May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

TOLNet/NDACC LWG Meeting, Huntsville, AL, USA 2017 results: Ozone maps May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

TOLNet/NDACC LWG Meeting, Huntsville, AL, USA 2017 results: Ozone maps May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

TOLNet/NDACC LWG Meeting, Huntsville, AL, USA 2017 results: Ozone maps May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

2017 results: Column densities May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

TOLNet/NDACC LWG Meeting, Huntsville, AL, USA 2017 results: OEM May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

TOLNet/NDACC LWG Meeting, Huntsville, AL, USA PMT issue Symptoms: strong signal fluctuations in 308 nm channel Reason: loose contacts in dynode voltage divider May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

2018 results: DIAL observation time May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

TOLNet/NDACC LWG Meeting, Huntsville, AL, USA 2018 results: DIAL ozone May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

2018 results: DIAL vs Ozonesondes May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

2018 results: DIAL vs Sondes Radiosonde May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

2018 results: DIAL vs Ozonesondes Radiosonde May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

2018 results: DIAL vs Ozonesondes Radiosonde May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

2018 results: DIAL vs Ozonesondes Radiosonde May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

TOLNet/NDACC LWG Meeting, Huntsville, AL, USA DIAL: 2017 vs 2018 2017 2018 May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA

TOLNet/NDACC LWG Meeting, Huntsville, AL, USA 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 May 11, 2018 TOLNet/NDACC LWG Meeting, Huntsville, AL, USA