For example, the winter potential temperature maps show very clearly a cool layer of marine air, which is 1000 to 1500 meters thick during the Winter season.
(the winter potential temperature maps; show very clearly; a cool layer of marine air) (marine air; is; 1000 to 1500 meters thick; T:during the Winter season)
the winter potential temperature maps marine air
show very clearly is
a cool layer of marine air
1000 to 1500 meters thick T:during the Winter season