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Ozone Observations Analyses on Eastern Island La Serena, 22 Nov. 2004

This presentation discusses ozone observations on Eastern Island, focusing on climatological aspects, zonal winds, atmospheric processes, and conclusions from studies conducted in 2003. It highlights the influence of extratropical cyclones, the Subtropical Jet Stream, and the important role of the Marine Boundary Layer in tropospheric ozone levels.

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Ozone Observations Analyses on Eastern Island La Serena, 22 Nov. 2004

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  1. Ozone Observations Analyses on Eastern Island La Serena, 22 Nov. 2004 Juan Quintana Dirección Meteorológica de Chile juaquin@meteochile.cl

  2. Presentation: • Introduction (Campaign 2003) • Typical ozone sounding at Eastern Island • Relevant processes atmospheric observed • Conclusions

  3. 1 3 2 4

  4. Climatological Aspects on Eastern Island Climatological Zonal Wind – Spring (Sep-Nov) Anticiclonic Vorticity and Subsidence

  5. Ozone Soundings in Rapanui 1995-2001

  6. Ozonosondes: Esatern Island Period: 1995-2001 1500m

  7. Ozonosondes: Esatern Island Period: 1995-2001 38 Soundings 15 Soundings 15 Soundings 6 Soundings Cluster groups 1, 2, 3 and 4

  8. Campaign 2003: Eastern Island

  9. Conditions Surface 08 to 13 Nov. 2003 Eastern Island Tº Max. Tº Min.

  10. Subtropical Jet Stream (m/s), 200 hPa Day 08 Day 09 Day 10 (m/s) Day 11 Day 12 Day 13

  11. Zonal Wind (27°S-109°W)

  12. Satelital Image GOES 10 (IR)

  13. Sinoptic Configuration08 to 13 Nov. 2003 Geopotencial Height 500 hPa Día 09 Day 08 Día 10 Día 11 Día 12 Día 13 Source: NCEP/NCAR

  14. Potencial Vorticity (PV)

  15. Wind: Zonal - Meridional

  16. Temperature (°C)

  17. Tropospheric Ozone 09-13 Nov 2003 Potencial Temperature 09—13 Nov. 2003

  18. Eastern Island - Tropopause (hPa)

  19. Conclusions • Maximun Ozone Tropospheric is observed during Spring in low troposphere and high troposphere on Eastern Island. • Extratropical cyclones, troughs and Subtropical Jet Stream Intense (>25m/s) favor significant Stratosphere-troposphere exchange (STE). • Marine Boundary Layer (MBL) seems to play a role important in tropospheric ozone maximum.

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