(S (S (BASENP (JJ Scientific) (NNS studies)) (VP (VBP have) (VP (VP (VBN linked) (BASENP (ADJP (JJ global) (CC and) (JJ Australian)) (NN temperature) (NNS increases))) (PP (TO to) (BASENP (DT the) (JJ enhanced) (NN greenhouse) (NN effect)))))) (PERIOD .))