( ( ( ( ( He ( ( ( introduced ( ( ( the millibar ) , ) ( ( a unit ) ( of ( air pressure ) ) ) ) ) ( in use ) ) today ) ) , ) and ) ( he ( first ( ( used lapse ) ( to ( ( describe ( ( the decrease ) ( of ( atmospheric temperature ) ) ) ) ( with height ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (PRP He)) (VP (VBD introduced) (NP (NP (DT the) (NN millibar)) (, ,) (NP (NP (DT a) (NN unit)) (PP (IN of) (NP (NN air) (NN pressure))))) (PP (IN in) (NP (NN use))) (NP (NN today)))) (, ,) (CC and) (S (NP (PRP he)) (ADVP (RB first)) (VP (VBD used) (NP (NN lapse)) (S (VP (TO to) (VP (VB describe) (NP (NP (DT the) (NN decrease)) (PP (IN of) (NP (JJ atmospheric) (NN temperature)))) (PP (IN with) (NP (NN height)))))))) (. .)))
He introduced the millibar, a unit of air pressure in use today, and he first used lapse to describe the decrease of atmospheric temperature with height.
(ROOT (S (NP (NNP Millibar)) (VP (VBZ is) (NP (NP (DT the) (NN unit)) (VP (VBN used) (S (VP (TO to) (VP (VB measure) (NP (NN air) (NN pressure)))))))) (. .)))