Sequence of PV for Wave B: 3rd July 2004:00 UTC - 4th July 2004:00UTC

3rd July 2004: 00UTC
The vertical cross sections on PV in the sequence shown in the window beside are drawn in such way that they cover the area immediately south of the wave bulge and the area which is darkest in the WV image.

In this wave the development of a PV anomaly can be seen very clearly. While PV=1 starts at around 500 hpa it then lowers down to about 600 and while developing a tongue of dry air even down to 800 hPa. Especially these very low values can typically be seen in rapid cyclogenesis cases and are a sign for the interaction between high and low layers.

The VCS was laid from position A to B.

3rd July 2004: 06UTC
The vertical cross sections on PV in the sequence shown in the window beside are drawn in such way that they cover the area immediately south of the wave bulge and the area which is darkest in the WV image.

In this wave the development of a PV anomaly can be seen very clearly. While PV=1 starts at around 500 hpa it then lowers down to about 600 and while developing a tongue of dry air even down to 800 hPa. Especially these very low values can typically be seen in rapid cyclogenesis cases and are a sign for the interaction between high and low layers.

The VCS was laid from position A to B.

3rd July 2004: 12UTC
The vertical cross sections on PV in the sequence shown in the window beside are drawn in such way that they cover the area immediately south of the wave bulge and the area which is darkest in the WV image.

In this wave the development of a PV anomaly can be seen very clearly. While PV=1 starts at around 500 hpa it then lowers down to about 600 and while developing a tongue of dry air even down to 800 hPa. Especially these very low values can typically be seen in rapid cyclogenesis cases and are a sign for the interaction between high and low layers.

The VCS was laid from position A to B.

3rd July 2004: 18UTC
The vertical cross sections on PV in the sequence shown in the window beside are drawn in such way that they cover the area immediately south of the wave bulge and the area which is darkest in the WV image.

In this wave the development of a PV anomaly can be seen very clearly. While PV=1 starts at around 500 hpa it then lowers down to about 600 and while developing a tongue of dry air even down to 800 hPa. Especially these very low values can typically be seen in rapid cyclogenesis cases and are a sign for the interaction between high and low layers.

The VCS was laid from position A to B.

4th July 2004: 00UTC
The vertical cross sections on PV in the sequence shown in the window beside are drawn in such way that they cover the area immediately south of the wave bulge and the area which is darkest in the WV image.

In this wave the development of a PV anomaly can be seen very clearly. While PV=1 starts at around 500 hpa it then lowers down to about 600 and while developing a tongue of dry air even down to 800 hPa. Especially these very low values can typically be seen in rapid cyclogenesis cases and are a sign for the interaction between high and low layers.

The VCS was laid from position A to B.