A new study has found that an apparent slowdown in the pace of global warming is due to some changes in the Atlantic and Southern Oceans.
According to the researches, the pace of global warming has slowed down since the late 1990s and the reason behind this is the changes in circulation patterns in both the oceans.
Lead researcher Ka-Kit Tung, who is an atmospheric scientist at the University of Washington in Seattle, says the oceans’ circulation patterns carry tropical waters that are warmed by the sun into the higher latitudes. Here the waters sink and flow back towards the Equator.
The global researchers and scientists community have been long trying to find out the reason behind why the Earth is in a hiatus of global warming. Many theories were also proposed to find an answer.
During the recent study, the researchers found that the missing heat from volcanoes and other sources is trapped deep beneath both the oceans. Researchers also said that the trend of global warming slowdown is likely linked to a roughly 30-year old cooling cycles.
Researchers explain the heat is declining in the northern and southern region of Atlantic and Southern Ocean by nearly a mile down and this is what hindering the balance between incoming heat and the radiated one back into the atmosphere.
Despite a well known fact that the greenhouse gases trap more solar heat at Earth’s surface, researchers say we are currently living in a global cooling period which is likely to continue for more than a decade.
“Every week there is a new explanation of the hiatus. Many of the earlier research works had necessarily focused on symptoms at the Earth’s surface, where we see many different and related phenomena. We looked at observations in the ocean to try to find the underlying cause,” said study author Ka-Kit Tung, applied mathematics professor at University of Washington.
According to the scientists, the changes in circulation of Atlantic meant roughly 30 warmer years followed by 30 cooler years. After 30 years of warm phase, it’s time for the cool one now, he adds.
The findings of study were published in the journal Science.