( ( ( Eight-hour ( tidal component ) ) ( near ( ( ( mesopause Terdiurnal ) ( -LRB- ( 8-hour -RRB- ) ) ) ( atmospheric ( tidal oscillations ) ) ) ) ) ( ( constitute ( ( a property ) ( of ( ( the ( wind field ) ) ( in ( ( the ( ( ( mesosphere and ) lower ) thermosphere ) ) ( at ( northern mid-latitudes ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Eight-hour) (JJ tidal) (NN component)) (PP (IN near) (NP (NP (NP (NNP mesopause) (NNP Terdiurnal)) (PRN (-LRB- -LRB-) (ADJP (JJ 8-hour)) (-RRB- -RRB-))) (NP (JJ atmospheric) (JJ tidal) (NNS oscillations))))) (VP (VBP constitute) (NP (NP (DT a) (NN property)) (PP (IN of) (NP (NP (DT the) (NN wind) (NN field)) (PP (IN in) (NP (NP (DT the) (ADJP (JJ mesosphere) (CC and) (JJR lower)) (NN thermosphere)) (PP (IN at) (NP (JJ northern) (NNS mid-latitudes))))))))) (. .)))
Eight-hour tidal component near mesopause Terdiurnal (8-hour)  atmospheric tidal oscillations constitute a property of the wind field in the mesosphere and lower thermosphere at northern mid-latitudes.
(ROOT (S (NP (DT The) (NN mesopause)) (VP (VBZ is) (PP (IN at) (NP (NP (DT the) (NN top)) (PP (IN of) (NP (DT the) (NN mesosphere)))))) (. .)))