1. 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

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

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

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

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

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

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

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

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

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

19. IOP 7b

21. Temperature

22. Theta

23. Lifted surface parcel

24. Temperature inversions

25. CIN

26. R i < 0.25

35. ECMWF O 3 on 700hPa IOP 7b ECMWF PV on 315K

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

37. 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 6 th COPS Workshop 27 th -29 th February 2008 andrew.russell-2@manchester.ac.uk

38. 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 6 th COPS Workshop 27 th -29 th February 2008 andrew.russell-2@manchester.ac.uk

39. 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 6 th COPS Workshop 27 th -29 th February 2008 andrew.russell-2@manchester.ac.uk

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

42. IOP 8b

44. 28 th June 2007

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