Temperature Advection:
Behind the comma a pronounced maximum of cold air advection is found.
Divergence:
The vertical distribution of divergence shows convergence in lower levels which decreases with height; that can result in divergence in upper levels. This is consistent with upwards motion (see omega). Convergence is generally found near the cloudy area but may sometimes be present in the surrounding areas.
PVA:
Vertical cross sections show PVA above the cloudy area with its maximum in the upper troposphere.
Vertical Motion (Omega):
Commas are often associated with upward motions throughout the whole atmosphere. This case shows some pronounced upward motion which can easily related to the converging movement seen in these areas as well.
Height of PV:
Especially behind the Comma cloud deepening of stratospheric air is observed. Also compare with the WV signal that shows a PV anomaly in the area which is dark in WV6.2 imagery.