Global warming: the temperature in 2020 will rise to levels that … – Dynamo

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People should prepare for the acceleration of climate change sooner than expected, warn scientists

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A new study suggests that the rate at which temperatures are rising in the northern hemisphere could reach 0.25 ° c in 2020, a high level that occurs at least 1,000 years ago.

The analysis, based on a combination of data from more than two dozen models of climate simulation all the world exchange rates examined 40. These new findings were published in the renowned journal Nature Climate Change.

The main scientific, Steve Smith of the Department of National Laboratory Northeast Pacific Energy in the United States, said “we have focused on changes in periods of 40 years, which is similar to the life of housing and man, such as buildings and roads built infrastructure. “

” In the short term, we will have to adapt to these changes, “Smith said.

In general, the world is warming due to increasing greenhouse gases that trap the sun’s heat and keep on Earth any longer.

The new study began calculating how temperatures changed rapidly between 1850 and 1930, a period in which the amount of fossil fuel gases in the atmosphere were low.

This was compared with data from temperature of the last 2,000 years obtained by studying tree rings, corals and ice cores, and predicted 40-year rates of change between 1871 and 2020.

Over the past 900 years, warming trends seldom 40 showed a higher than 0.1 ° C per decade average rate, the report explained. But in 2020 is expected to increase at an average rate of 0.25c per decade.

As shown in the graph South America is one of the regions that have one of the lowest variability of temperature, and Antarctica will suffer the most product of global warming.

Smith explained that “with these climate model simulations, the world is just beginning to come into a new place rates of temperature change are consistently larger than the historical values ​​for time periods of 40 years. We need to understand better how they will be affected and how to prepare to face the effects. “