Vertical Cross Sections
Vertical cross sections are useful for investigating the vertical distribution of relevant parameters along a line of interesting weather phenomena. In this chapter two aspects will be considered:- Patterns of potential instability
- Dynamical forcings
Vertical Cross Sections (VCS) for the super cell
In this chapter VCSs of several numerical parameters will be discussed.
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Supercell: 09th June 2004, 00 UTC |
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Supercell: 09th June 2004, 06 UTC |
Summary of the investigations in this chapter
The sequence of VCSs reveal the classical patterns of a summer convective situation. Whereas at 00 UTC the super cell was in its intensifying phase the NWP-parameters from 06 UTC represent the situation about one hour before the maximum intensity.
09th June 2004, 00 UTC, warm side of the super cell
- potential instability between 800 and 500 hPa
- most intense warm air advection happened between 1000 and 800 yielding a labilisation
- maximum of upward motion at about 850 hPa that was according to a strong convergence near the ground and weak divergence at 850 to 700 hPa.
- only light potential instability (between 800 and 600 hPa)
- maximum of warm air advection happened now at about 850 hPa that is a hint to a reduced tendency of labilisation
- the most intense convergence exhibited a higher position of its maximum, too.