( ( An ( air mass ) ) ( ( is ( ( defined ( as ( ( a ( large ( , ( ( ( more or ) ( less uniform ) ) body ) ) ) ) ( of air ) ) ) ) ( with ( nearly ( the ( same ( temperature ( and ( moisture conditions ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT An) (NN air) (NN mass)) (VP (VBZ is) (VP (VBN defined) (PP (IN as) (NP (NP (DT a) (JJ large) (, ,) (ADJP (ADJP (JJR more)) (CC or) (ADJP (RBR less) (JJ uniform))) (NN body)) (PP (IN of) (NP (NN air))))) (PP (IN with) (NP (RB nearly) (DT the) (JJ same) (NN temperature) (CC and) (NN moisture) (NNS conditions))))) (. .)))
An air mass is defined as a large, more or less uniform body of air with nearly the same temperature and moisture conditions.
(ROOT (S (NP (NP (CD One)) (PP (IN of) (NP (NP (DT the) (NNS properties)) (PP (IN of) (NP (DT an) (NN air) (NN mass)))))) (VP (VBZ is) (SBAR (IN that) (S (NP (DT an) (NN air) (NN mass)) (VP (VBZ has) (NP (NP (JJ similar) (NN temperature) (CC and) (NN moisture) (NNS properties)) (PP (IN throughout) (NP (PRP it)))))))) (. .)))
One of the properties of an air mass is that an air mass has similar temperature and moisture properties throughout it.