1. Superimposition of ARPEGE analysis : Jet,
Budapest storm
Superimposition of ARPEGE analysis :
Jet,
height of the dynamical tropopause (Z_1.5 PVU surface),
wet-bulb potential Temperature at 850 hPa
with West-East cross section (France-Hungary)
Patrick Santurette (Meteo-France)

2. ECMWF geopot. height on 2PVU
Jet, Z_1.5 PVU (dam, < 975 dam), ’w_850 hPa
RGB airmass
ECMWF geopot. height on 2PVU
Radar data
cross section: PV, ’w,
Vertical Velocity (descending, ascending)

3. Vertical Velocity (descending, ascending)
Jet, Z_1.5 PVU (dam, < 975 dam), ’w_850 hPa
cross section: PV, ’w,
Vertical Velocity (descending, ascending)

4. Vertical Velocity (descending, ascending)
Notice:
Increasing of the jet (ap-pearance of the very light blue color)
Coupling between low-level warm and moist air and tropopause anomaly
increasing of the tropopause perturbation (of the slope of the 1.5 PVU surface)
Increasing of the vertical velocity linked to the PV anomaly
Jet, Z_1.5 PVU (dam, < 975 dam), ’w_850 hPa
cross section: PV, ’w,
Vertical Velocity (descending, ascending)

5. Vertical Velocity (descending, ascending)
Jet, Z_1.5 PVU (dam, < 975 dam), ’w_850 hPa
cross section: PV, ’w,
Vertical Velocity (descending, ascending)