California – After analyzing 50 years of data, a group of researchers from the University of Stanford and Berkeley found that warmer global temperatures have been influencing in the global GDP for a long time.

The paper published on Nature magazine, focused on measuring nations’ wealth to examine their transition at times of climate change effects. It concluded that if the temperature continues to rise at current rates, the global income could dip by 20 to 40 percent by 2100

Climate change has been previously linked to triggering civil wars, food prices, water supply, and natural disasters, among other things, but now this recent study suggests its direct relationship with economic productivity in both agricultural and non-agricultural sectors, and applicable to both rich and poor countries.

Walk on water: PI Hajo Eicken at the Barrow sea ice mass balance site in June 2008, during the melt season. Credits: Matt Druckenmiller/

“One of the main findings is that rich countries are not isolated. Climate change could reshape the global economy. Rich companies are part of the story and could be impacted in important ways.” said to Fortune co-author Marshall Burke, an assistant professor in Stanford’s department of earth system science.

With the UN Conference on Climate Change being held in Paris later this year, the study comes at the right time for global leaders to sit and think hard on the consequences of the current lack of action relating climate change.

Analyzing data from the World Bank for 166 countries and comparing the results of warm, cool, and average years in each country, researchers found the “ideal” temperature when per capita GDP growth is at its maximum: approximately 13 degrees Celsius. Some of the countries blessed with this average temperature included the U.S., much of Europe, Japan and China, which not by chance are some of the largest economies in the world. Any decrease or increase in the temperature means negative impact on economic growth.

“It’s the optimal temperature where humans are really good at producing stuff.” said Burke to Fortune.

For the next century

The study stands by the verdict that global economic production will decrease by about 23 percent by the end of the century in 2100 if climate keeps changing at current rates. Countries in the tropics, already hotter than this optimal temperature, are likely to face the most dramatic economic pain from warming, the study found. Also northern countries well below the ideal average may see benefits as opportunities open up for agriculture and other industries.

Experts defend this will happen despite reaches in technology innovation, as, over the past six decades, economies haven’t adapted well to hotter temperatures and air conditioners have not been able to make a difference.

 “If you look back to the 1960s to now, any subset of time between now and then shows a consistent pattern of temperature correlating to GDP,” says Matthias Ruth to Bloomberg, economist at Northeastern University.

Source: Fortune