Gail Hartfield Kermit Keeter Phil Badgett Basic Terms 1.
Orographic ascent can increase the potential for damming.
These processes can strengthen an ongoing damming event and may even initiate damming. In general an air mass with good damming potential is characterized by relatively cold temperatures, high dewpoint depression, high static stability, and warm air advection above the surface-based cold layer. In the Carolinas and Virginia, refers to the eastern slopes and foothills of the Appalachian Mountains and the adjacent piedmont region. The spectrum is based upon event differences regarding scale variations, the relative contributions of adiabatic versus diabatic cooling, and the relative degree of favorable synoptic scale support. Types of Cold Air Damming Events 9.