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Volcanic Emissions in the Arctic: Atmospheric Transport Study

This study focuses on the atmospheric transport of volcanic emissions into the high Arctic region, specifically examining the case of Sarychev Peak volcano. Using the FLEXPART model and a combination of observations and model results, the transport patterns of ash plume from the source to locations like Halifax and PEARL are analyzed. The study evaluates how volcanic emissions travel through the atmosphere, impacting different regions along the way. By simulating the dispersion of tracers and analyzing data from various sources, the overall transport pattern of volcanic emissions in the Arctic region is studied to enhance understanding and preparedness for such events.

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Volcanic Emissions in the Arctic: Atmospheric Transport Study

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  1. Atmospheric Transport of Volcanic Emissions into the High Arctic RegionR. Damoah, A. Bacak, J. SloanWCAS, University of Waterloo, Canada

  2. Outline Introduction Sarychev Peak (S.P)‏ Modeling FLEXPART Observations/Model Results Ash plume @ Source ‏ " " @ Halifax ‏ " " @ PEARL Conclusion Overall Transport Pattern

  3. Introduction Sarychev Peak Volcano > Type: stratovolcano > Elevation: 1.496 km > Historically: Active (1760;1805;1879;1923;1927;1928; 1930;1932;1946;1954;1960;1965; 1976;1986;1989)‏

  4. Introduction

  5. MODEL FLEXPART [Stohl et al., 1998; Stohl and Thomson, 1999] is a Lagrangian particle dispersion model that simulates the long-range and mesoscale transport, diffusion, dry and wet deposition, and radioactive decay of tracers released from point, line, area or volume sources Is equipped with convection scheme [Emanuel and Zivkovic-Rothman, 1999] to account for sub-gridscale convective transport Meteorological data to drive the model is from NCEP (GFS, 1x1x26)‏ FLEXPART can be used forward in time to simulate the dispersion of tracers from their sources, or backward in time to determine potential source contributions for given receptors. FLEXPART was evaluated using data from three large-scale tracer experiment (CAPTEX, ANATEX and ETEX) [Stohl et al., 1998] Simulations started on June 12 at 00 UTC and end June 27 at 23 UTC 20,000 particles carrying 2700 tonnes of SO2 [Elias et al., 1998]tracer were released daily into 12 km column from June 12 at 02 UTC to 20 June at 23 UTC

  6. Ash Plume @ Source Tropopause NCEP (GFS)‏ SONDE

  7. OMI FLEXPART SO2

  8. Ash Plume @ Halifax MLS SO2 CALIPSO

  9. Ash Plume @ PEARL FLEXPART SO2 MLS SO2 HSRL Backscatter

  10. Overall Transport Pattern FLEXPART SO2

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