( ( Sea-Ice ( Dynamics Sea-ice ) ) ( ( constitutes ( ( a ( mobile layer ) ) ( over ( ( the surface ) ( of ( ( ( the ( polar oceans ) ) , ) ( driven ( by ( atmospheric ( and ( ocean forcing ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Sea-Ice) (NNPS Dynamics) (NNP Sea-ice)) (VP (VBZ constitutes) (NP (NP (DT a) (JJ mobile) (NN layer)) (PP (IN over) (NP (NP (DT the) (NN surface)) (PP (IN of) (NP (NP (DT the) (JJ polar) (NNS oceans)) (, ,) (VP (VBN driven) (PP (IN by) (NP (JJ atmospheric) (CC and) (NN ocean) (NNS forcing)))))))))) (. .)))
Sea-Ice Dynamics Sea-ice constitutes a mobile layer over the surface of the polar oceans, driven by atmospheric and ocean forcing.
(ROOT (NP (NP (NNP Ocean) (NNS waves) (NN travel)) (PRN (-LRB- -LRB-) (PRP s) (-RRB- -RRB-)) (PP (IN at) (NP (NP (DT the) (NN interface)) (PP (IN between) (NP (NP (DT the) (NN sea) (NN surface)) (CC and) (NP (DT the) (NN atmosphere)))))) (. .)))