( ( ( ( ( ( Fifteen ( of ( those ( radar ( imagery sessions ) ) ) ) ) ( ( ( ( are ( for oceanographers ) ) ( studying ( wave patterns ) ) ) , ) ( how ( ( the ( ocean temperatures ) ) ( affect ( atmospheric ( ( heating and ) cooling ) ) ) ) ) ) ) , ) and ) ( ( the surface ) ( features ( of ( ocean ( and ( sea floors ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NP (NNP Fifteen)) (PP (IN of) (NP (DT those) (NN radar) (NN imagery) (NNS sessions)))) (VP (VBP are) (PP (IN for) (NP (NNS oceanographers))) (S (VP (VBG studying) (NP (NN wave) (NNS patterns)))) (, ,) (SBAR (WHADVP (WRB how)) (S (NP (DT the) (NN ocean) (NNS temperatures)) (VP (VBP affect) (NP (JJ atmospheric) (NN heating) (CC and) (NN cooling))))))) (, ,) (CC and) (S (NP (DT the) (NN surface)) (VP (VBZ features) (PP (IN of) (NP (NN ocean) (CC and) (NN sea) (NNS floors))))) (. .)))
Fifteen of those radar imagery sessions are for oceanographers studying wave patterns, how the ocean temperatures affect atmospheric heating and cooling, and the surface features of ocean and sea floors.
(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)))))) (. .)))