By 2100, one in ten people will live in a place where climate change has damaged at least two major sectors, like crop yields, water, ecosystems or health.
The internationals tidy said these "hotspots" will be mostly concentrated in the southern Amazon and southern Europe. In the Amazon, there will be "severe changes" in water availability, yield and ecosystems.
In southern Europe, water shortages and crop failures will lead to hardships.
"Overlapping impacts of climate change in different sectors have the potential to interact and thus multiply pressure on the livelihoods of people in the affected regions," lead researcher Franziska Piontek said.
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The study was conducted by climate impact researchers from Japan, the United States, China, Europe and other countries. They used mathematical modeling programs to determine the affect of global warming.
They analyzed different levels of warning, finding that multi-sector overlap began to appear "robustly" at an average worldwide three degree temperature change.
When they raised it to four degrees higher than the 1980-2010 average, 11 percent of the world's population was "subject to severe impacts in at least two of the four impact sectors."
Other places where crops were suffering were Central America, Africa and the Ethiopian highlands.
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Northern regions of Asia also suffered because water availability caused crops to diminish.
"What today is considered extreme could become the new normal," co-author Qiuhong Tang said.
Luckily, there was no place on Earth where all four sectors experienced a severe change.
They hope that their research will help nations plan for coming changes in the world's weather.
"It allows for a risk management perspective," co-author Alex Ruane said.
"In the hotspot parts of Africa, for instance, even small temperature rises can lead to additional losses that many small farmers simply cannot afford."
Sources: Raw Story