The Coriolis effect deflects the winds toward the west, creating the coastal easterlies . The Polar Plateau offers a constant source of cold, dense air. Most of the interior surface winds move over a gentle slope. However, the landscape can channel and force the airflow to converge, causing it to strengthen. The intense winds, once they reach the coast, are called katabatic winds .
Katabatic winds begin as inversion winds.
Like inversion winds, they are driven down slope by gravity, but the slopes are much more steep. There are two types of katabatic winds, ordinary and extraordinary. Streamlines of winter airflow. Ordinary Katabatic Winds have a constant direction but a highly variable speed. They are gusty.