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An examination of atmospheric lids during
COPSAndrew Russell and Geraint Vaughan
Centre for Atmospheric Science, University of Manchester
6th COPS Workshop 27th-29th February 2008 [email protected]
What are lids?
• Halt convection
• Warmer than surroundings
• Names: Lids(Capping) InversionsRegions of CIN
Stable layers
6th COPS Workshop 27th-29th February 2008 [email protected]
What are lids?
• Halt convection
• Warmer than surroundings
• Names: Lids(Capping) InversionsRegions of CIN
Stable layers
6th COPS Workshop 27th-29th February 2008 [email protected]
What are lids?
• Halt convection
• Warmer than surroundings
• Names: Lids(Capping) InversionsRegions of CIN
Stable layers
6th COPS Workshop 27th-29th February 2008 [email protected]
What are lids?
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 [email protected]
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 [email protected]
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 [email protected]
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 [email protected]
Research priorities
• Boundary layer structure
• Lid statistics
• Synoptic origin of lids
• Model representation of lids
6th COPS Workshop 27th-29th February 2008 [email protected]
Research priorities
• Boundary layer structure
• Lid statistics
• Synoptic origin of lids
• Model representation of lids
6th COPS Workshop 27th-29th February 2008 [email protected]
Research priorities
• Boundary layer structure
• Lid statistics
• Synoptic origin of lids
• Model representation of lids
6th COPS Workshop 27th-29th February 2008 [email protected]
Research priorities
• Boundary layer structure
• Lid statistics
• Synoptic origin of lids
• Model representation of lids
6th COPS Workshop 27th-29th February 2008 [email protected]
COPS Radiosonde sites…
…plus some extra DWD, Meteo-France, Meteo-Swiss, KNMI and more when available.
Achern Sewage works/COPS Supersite R
IOP 7b
Temperature
Theta
Lifted surface parcel
Temperature inversions
CIN
Ri < 0.25
ECMWF O3 on 700hPa
IOP 7b
ECMWF PV on 315K
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 [email protected]
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 [email protected]
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 [email protected]
IOP 8b
IOP 8b
28th June 2007
