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An examination of atmospheric lids during COPS

An examination of atmospheric lids during COPS. Andrew Russell and Geraint Vaughan Centre for Atmospheric Science, University of Manchester. 6 th COPS Workshop 27 th -29 th February 2008 andrew.russell-2@manchester.ac.uk. Introduction.

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An examination of atmospheric lids during COPS

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  1. An examination of atmospheric lids during COPS Andrew Russell and Geraint VaughanCentre for Atmospheric Science, University of Manchester 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  2. Introduction 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  3. What are lids? • Halt convection • Warmer than surroundings • Names: Lids (Capping) Inversions Regions of CIN Stable layers 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  4. What are lids? • Halt convection • Warmer than surroundings • Names: Lids (Capping) Inversions Regions of CIN Stable layers 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  5. What are lids? • Halt convection • Warmer than surroundings • Names: Lids (Capping) Inversions Regions of CIN Stable layers 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  6. What are lids?

  7. Why study lids? • Inhibition of convection • Allow CAPE to accumulate • Where do they come from? • Is there more to lids than meets the eye? i.e. fractal structure of atmospheric layers 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  8. Why study lids? • Inhibition of convection • Allow CAPE to accumulate • Where do they come from? • Is there more to lids than meets the eye? i.e. fractal structure of atmospheric layers 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  9. Why study lids? • Inhibition of convection • Allow CAPE to accumulate • Where do they come from? • Is there more to lids than meets the eye? i.e. fractal structure of atmospheric layers 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  10. Why study lids? • Inhibition of convection • Allow CAPE to accumulate • Where do they come from? • Is there more to lids than meets the eye? i.e. fractal structure of atmospheric layers 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  11. Research priorities • Boundary layer structure • Lid statistics • Synoptic origin of lids • Model representation of lids 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  12. Research priorities • Boundary layer structure • Lid statistics • Synoptic origin of lids • Model representation of lids 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  13. Research priorities • Boundary layer structure • Lid statistics • Synoptic origin of lids • Model representation of lids 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  14. Research priorities • Boundary layer structure • Lid statistics • Synoptic origin of lids • Model representation of lids 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  15. Data sources 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  16. COPS Radiosonde sites… …plus some extra DWD, Meteo-France, Meteo-Swiss, KNMI and more when available.

  17. Achern Sewage works/COPS Supersite R

  18. Example case: IOP7b 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  19. IOP 7b

  20. Temperature

  21. Theta

  22. Lifted surface parcel

  23. Temperature inversions

  24. CIN

  25. Ri < 0.25

  26. IOP 7b ECMWF PV on 315K ECMWF O3 on 700hPa

  27. Next steps… 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  28. Lid analysis • Collection of as much radiosonde data as possible • Systematic analysis leading to 4D maps of lid height/occurrence • Case studies of lid origin 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  29. Lid analysis • Collection of as much radiosonde data as possible • Systematic analysis leading to 4D maps of lid height/occurrence • Case studies of lid origin 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  30. Lid analysis • Collection of as much radiosonde data as possible • Systematic analysis leading to 4D maps of lid height/occurrence • Case studies of lid origin 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  31. Contact details:andrew.russell-2@manchester.ac.uk 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

  32. IOP 8b

  33. IOP 8b

  34. 28th June 2007

  35. Contact details:andrew.russell-2@manchester.ac.uk 6th COPS Workshop 27th-29th February 2008 andrew.russell-2@manchester.ac.uk

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