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STRATOSPHERE-TROPOSPHERE EXCHANGE PROCESSES AND THEIR IMPACT ON THE OZONE BALANCE IN THE

STRATOSPHERE-TROPOSPHERE EXCHANGE PROCESSES AND THEIR IMPACT ON THE OZONE BALANCE IN THE SUBTROPICS OF THE SOUTHERN HEMISPHERE: A MULTI-SCALE INTEGRATED STUDY BASED AT CERRO TOLOLO (30ºS, 70ºW, 2200 M.A.S.L) FONDECYT 1030809 (2003-2006) /FONDECYT-INT 7030071 (2003).

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STRATOSPHERE-TROPOSPHERE EXCHANGE PROCESSES AND THEIR IMPACT ON THE OZONE BALANCE IN THE

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  1. STRATOSPHERE-TROPOSPHERE EXCHANGE PROCESSES AND THEIR IMPACT ON THE OZONE BALANCE IN THE SUBTROPICS OF THE SOUTHERN HEMISPHERE: A MULTI-SCALE INTEGRATED STUDY BASED AT CERRO TOLOLO (30ºS, 70ºW, 2200 M.A.S.L)FONDECYT 1030809 (2003-2006)/FONDECYT-INT 7030071 (2003)

  2. FONDECYT (1030809) 2003-2006Questions • Which are the mechanisms that explain the spring ozone maximum observed in the southern subtropics...Tololo and Pascua? • Stratosphere-troposphere exchange (STE)? • Biomass burning in the tropics? • All above • When is there STE? And then, which is the relative importance of advection, subsidence and turbulent mixing? • Are these phenomena well represented in models?

  3. What we promised to do: • Analyze available data • Perform 1.5 intensive spring campaigns (soundings) • Measure 7Be (1 yr) and CO (1 week) • Model the dispersion of an ozone like tracer • Write papers • Train students

  4. SIMULATING CAMPAIGN SCENARIOS: Synoptic Conditions & Dispersion of an O3 like tracer L. Gallardo, M. Rojas, R. Alcafuz, I. Ramos, A. Valdebenito. To be continued

  5. Contents • What we want to simulate • MM5 and synop conditions • Ozone like tracer using MATCH • What is next

  6. +BC (Dirichlet/Neumann) +IC Simulating an ozone like tracer…regional/mesoscales Photolysis and deposition +Estimating the influx?

  7. Nov. 2004

  8. Next steps • Simulating ozone like profiles over Rapanui using MM5-MATCH for Nov. 2003 • Simulating synoptic conditions for both campaigns • A two year (1996-1997) run over Rapanui? • Coupling MM5-KAMM-MATCH • Thinking of good BC when encountering the Andes

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