Waves can be seen as catalysts transferring mean momentum from the earth's surface (for topographic waves) or (more generally) from a wave forcing region to the level where the waves are dissipated.
(Waves; can be seen; as catalysts transferring mean momentum from the earth's surface (for topographic waves) or (more generally) from a wave forcing region to the level) (catalysts; transferring more generally; from a wave forcing region; to the level) (the waves; are dissipated; L:the level)
Waves catalysts the waves
can be seen transferring more generally are dissipated
as catalysts transferring mean momentum from the earth's surface (for topographic waves) or (more generally) from a wave forcing region to the level
from a wave forcing region to the level
L:the level