Continental polar (cP) The cP air of winter originates in the persistent cold barotropic high-pressure area that develops over Asia during the winter and in the winter high that frequently forms over the tundra region of North America.
(the persistent cold barotropic high-pressure area; develops; over Asia; T:during the winter and in the winter high) (the winter high; forms; L:over the tundra region of North America; T:frequently)
the persistent cold barotropic high-pressure area the winter high
develops forms
over Asia T:during the winter and in the winter high
L:over the tundra region of North America T:frequently