The islands' names refer to the different force winds hitting them, not their topography.
( ( ( The ( islands ' ) ) names ) ( ( refer ( to ( ( the ( different ( force winds ) ) ) ( hitting ( ( ( them , ) not ) ( their topography ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS islands) (POS ')) (NNS names)) (VP (VBP refer) (PP (TO to) (NP (NP (DT the) (JJ different) (NN force) (NNS winds)) (VP (VBG hitting) (NP (NP (PRP them)) (, ,) (RB not) (NP (PRP$ their) (NN topography))))))) (. .)))
The islands are exposed to winter only during the winter.
( ( The islands ) ( ( are ( ( exposed ( to ( winter only ) ) ) ( during ( the winter ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS islands)) (VP (VBP are) (VP (VBN exposed) (PP (TO to) (NP (NN winter) (RB only))) (PP (IN during) (NP (DT the) (NN winter))))) (. .)))