Global heating has likely made El Niños and La Niñas more ‘frequent and extreme’ – the Guardian

Between Two Storms (by Peter Kurdulija CC BY-NC-ND 2.0 via Flickr).

Scientists say greenhouse gases have already affected climate patterns in the Pacific that could lead to more severe weather, floods and heatwaves…Dr Wenju Cai, lead author of the study from Australia’s CSIRO science agency, said the models showed a “human fingerprint” from 1960 onwards. But some other scientists not involved in the study had reservations about the findings, raising concerns about the reliance on modelling….