( ( In ( the tropics ) ) ( , ( ( oceanic ( thermocline waves ) ) ( ( affect ( ( the ( sea ( surface temperature ) ) ) ( which ( ( ( affects ( the ( atmospheric winds ) ) ) and ) ( can ( generate ( El ( Nino ( and ( La ( Nina conditions ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (DT the) (NNS tropics))) (, ,) (NP (JJ oceanic) (NN thermocline) (NNS waves)) (VP (VBP affect) (NP (NP (DT the) (NN sea) (NN surface) (NN temperature)) (SBAR (WHNP (WDT which)) (S (VP (VP (VBZ affects) (NP (DT the) (JJ atmospheric) (NNS winds))) (CC and) (VP (MD can) (VP (VB generate) (NP (NNP El) (NNP Nino) (CC and) (NNP La) (NNP Nina) (NNS conditions))))))))) (. .)))
In the tropics, oceanic thermocline waves affect the sea surface temperature which affects the atmospheric winds and can generate El Nino and La Nina conditions.
(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)))))) (. .)))