( ( ( Atmospheric pressure ) ( at ( ( Earth 's ) surface ) ) ) ( also ( ( ( changes ( in response ) ) ( to ( vertical ( air movements ) ) ) ) . ) ) )
(ROOT (S (NP (NP (JJ Atmospheric) (NN pressure)) (PP (IN at) (NP (NP (NNP Earth) (POS 's)) (NN surface)))) (ADVP (RB also)) (VP (VBZ changes) (PP (IN in) (NP (NN response))) (PP (TO to) (NP (JJ vertical) (NN air) (NNS movements)))) (. .)))
Atmospheric pressure at Earth's surface also changes in response to vertical air movements.
(ROOT (S (NP (NP (DT The) (NN movement)) (PP (IN of) (NP (NP (DT an) (NN air) (NN mass)) (PP (IN over) (NP (NP (NN earth) (POS 's)) (NN surface)))))) (VP (VBZ causes) (NP (JJ local) (NN weather) (NNS changes))) (. .)))