( ( ( The ( root cause ) ) ( of ( these ( different ( weather events ) ) ) ) ) ( ( lies ( in ( ( the differences ) ( in ( temperature ( of ( ( the ( atmospheric ( air column ) ) ) ( above ( ( Earth 's ) surface ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN root) (NN cause)) (PP (IN of) (NP (DT these) (JJ different) (NN weather) (NNS events)))) (VP (VBZ lies) (PP (IN in) (NP (NP (DT the) (NNS differences)) (PP (IN in) (NP (NP (NN temperature)) (PP (IN of) (NP (NP (DT the) (JJ atmospheric) (NN air) (NN column)) (PP (IN above) (NP (NP (NNP Earth) (POS 's)) (NN surface)))))))))) (. .)))
The root cause of these different weather events lies in the differences in temperature of the atmospheric air column above Earth's surface.
(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))) (. .)))