“But it is now warmer still and we are getting what looks like record temperatures.” “What’s been surprising is that the last three years have also been really warm, despite the fact that we’ve had La Niña conditions,” he said. We use Google reCaptcha to protect our website and the Google Privacy Policy and Terms of Service apply. For more information see our Privacy Policy. Privacy Notice: Newsletters may contain info about charities, online ads, and content funded by outside parties. During El Niño periods, the ocean temperatures in those regions are warmer than usual and global temperatures are pushed up.Īccording to the Noaa data, the second-hottest globally averaged ocean temperatures coincided with El Niño that ran from 2014 to 2016. La Niña periods – characterised by cooling in the central and eastern tropical Pacific and stronger trade winds – have a cooling influence on global temperatures. “Now that it’s over, we are likely seeing the climate change signal coming through loud and clear.” This prolonged period of cold was tamping down global mean surface temperatures despite the rise of greenhouse gases in the atmosphere. Three years of La Niña conditions across the vast tropical Pacific have helped suppress temperatures and dampened the effect of rising greenhouse gas emissions.īut scientists said heat was now rising to the ocean surface, pointing to a potential El Niño pattern in the tropical Pacific later this year that can increase the risk of extreme weather conditions and further challenge global heat records.ĭr Mike McPhaden, a senior research scientist at Noaa, said: “The recent ‘triple dip’ La Niña has come to an end.
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