climatology
concepts
The most common definition of a front is a “boundary between dissimilar air masses.” While this boundary is typically manifested as a thermal discontinuity, in some cases a moisture discontinuity can also behave as a front. In the plains of the United States, this moisture discontinuity is commonly referred to as a dryline, separating continental tropical and maritime tropical air masses. [Source: Encyclopedia of Geography; Fronts]
fronts