ch a weather event as shown in the film, which was criticised by climate scientists on its release. He found that it would take decades for the Earth to return to normal with areas including the British Isles taking up to a century for temperatures to reach the same levels. Global warming: This phenomenon would end彩跑狗玄机图 for 20 years (Image: Getty) He found that, for a period of 20 years, the earth will cool instead of warm if global warming and a collapse of the AMOC occur simultaneously. Thereafter, global warming continues as if the AMOC never collapsed, but with a globally averaged temperature offset of about 0.8C. Prof Drijfhout said: The planet earth recovers from the AMOC collapse in about 40 years when globa
l warming continues at present-day rates, but near the eastern boundary of the North Atlantic including the British Isles it takes more than a century before tempera
ture is back to normal. He found that an AMOC collapse also caused heat to flow from the atmosphere into the ocean which has been witnessed in the climate change hiatus of the past 15 years. He explained: When a similar cooling or reduced heating is caused by volcanic eruptions or decreasing greenhouse emissions the heat
flow is reversed, from the ocean into the atmosphere. A similar reversal of energy flow is also visible at the top of the atmosphere. These very different fingerprints in energy flow between atmospheric radiative forcing and internal ocean circulation processes make it possible to attribute the cause of a climate hiatus period. However, the study, which appears in the journal Nature Scientific Reports, says that the recent period of very weak warming cannot be attributed to one single cause with El Nino most probably playing a role and possibly also changes in the Southern Ocean due to shifting and increasing westerlies. Prof Drijfhout said: It can be excluded, however, that this hiatus period was solely caused by changes in atmospheric forcing, either due to volcanic eruptions, more aerosols emissions in Asia, or reduced greenhouse gas emissions. Changes in ocean circulation must have played an important role. Natural variations have counteracted the greenhouse effect for a decade or so, but I expect this period is over now.