August 17, 2015, 15:14 Washington, Aug 17 (Prensa Latina) A study published today in the journal Nature Geoscience indicates that before the global warming caused by humans , the surface layer of the oceans of the Earth recorded a constant cooling for a thousand 800 years.
During the second half of the cooling period, the trend was likely driven by large and frequent volcanic eruptions.
The study also suggests that the coldest temperatures occurred during the Little Ice Age, a period that spanned the century XVI to XVIII and was known for the coldest average temperature of the earth.
The concurrence of cooling events on land and sea suggests that a phenomenon of global cooling by man was eliminated by global warming caused .
Compared with the atmosphere, the oceans can absorb more heat and catch it for longer periods of time, so that the ocean can cushion the short-term changes in global temperature.
But when events like volcanic eruptions are grouped in a relatively short period of time, temperature changes can become prolonged.
Today, the Earth is warming about 20 times more faster than cooled over the past 800 thousand years warned Michael Evans, second author of the study and associate professor in the Department of Geology and Earth System Science, University of Maryland professor.
According to Evans, the study highlights the truly profound effects we are having in our current climate
mgt / NVO.
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