EUMeTrain: Case Study on supercell: 9th June 2004

Synoptic Situation: Satellite images and derived numerical parameters

In order to consider the whole physical background derived model parameters are needed, too. The numerical field of thermal advection in 500 hPa, vertical motion in combination with KO-index and the vorticity advection in 300 hPa will be discussed. Because NWP-fields of frontogenesis and of PV are only available with a time increment of 12 hours we are not able to consider these parameters accordingly.



IR-imagery and vorticity advection at 300 hPa: time sequence
In this part we check if a correspondence between the cloud structures and the dynamical forcings exists and put that into relation to the wind speed in 300 hPa for a better understanding of the physical processes (synoptic situation).


IR-imagery combined with KO-index and vertical motion 500 hPa: time sequence
When we combine the satellite image with the NWP-fields of Omega and KO we see where upward motion and potential instability occured.


IR-imagery and temperature advection in 500 hPa: time sequence
The temperature advection in relation to the vortcity advection gives us a better insight about the relevant dynamical processes for vertical motion.


Summary of the investigations in this chapter
The following results will be emphazised: