Anticyclonic - Rotation opposite the earth's rotational sense. In the Northern Hemisphere, clockwise rotation is anticyclonic. Backing - Counterclockwise shifting of the winds with either distance or time. Baroclinic - A state of the atmosphere in which isotherms intersect isobars. The geostrophic wind results in temperature advection, and hence disturbances modify with time.
Short waves are baroclinic and therefore modify.
Barotropic - A state of the atmosphere where isotherms are parallel to isobars. No temperature advection occurs. Long waves are barotropic. Bright band - In radar, indicates the melting point of a snowflake. High intensity return is caused by the water surrounding the ice crystal, hence appearing large.