Wind Vectors 1000 hPa:
At the surface wind vectors are very slow within and at the leading side of the frontal cloud band. Even calms can be
found in advance of the frontal cloud band. Further to the north wind speeds increase. This is in good agreement with
the ideal conceptual model, in this case the area of very low wind speeds is even larger than ususal.
Wind Vectors 700 hPa:
700 hPa is about the height of the tops of the Alps (whilst in model orography is simulated lower.) Within the frontal
cloud band wind shows south-westerly components. The air mass tends to stream around the Alps rather than crossing it.
High resolution model show a similar sructure. This is in good agreement with the ideal conceptual model.
TFP:
TFP is following the frontal cloud band showing roughly the curved structure of the front. In the area of the Front Delay
the maximum off TFP is at the leading edge of the frontal cloud band, wereas in the rest of the front it is inside. This
is due to the coarse model which cannot resolve the hook in the cloud band at this point.
Equivalent Thickness:
Equivalent thickenss shows a frontal situation. The isolines are not showing a very high gradient, meaning that the
differences of the airmasses behind and in advance the front are quite smooth. This favours the development of Front
Delay.
Temperature Advection 700 hPa:
The zero line of temperature advection 700 hPa lies within the frontal cloud band as expected for Cold Front. In the
Alpine region there is a small warm advection maximum which is not so typical.