By 2100, one major city could be a desert

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Welcome to Lisbon, Portugal. Located near the Atlantic Ocean, the capital city is filled with lush, green grass and plenty of trees.

But researchers warn this Mediterranean region, and other parts of Southern Europe, could transform into a desert by the end of the century because of climate change.

SEE MORE: The Words 'Climate Change' Are Tricky On Tangier Island

To come to this conclusion, researchers used pollen records to create models of what could happen to the climate under various temperature increases.

The worst-case scenario model had global temperatures rising by about 5 degrees Celsius. This would cause the majority of southern Spain and parts of Portugal to transform into a desert.

According to the study, average temperatures in the area have increased by 1.3 degrees Celsius since the late 19th century.

Much of that could be prevented, though, if we work to cut carbon emissions. It's actually something almost 200 governments agreed to do last year to try to keep temperatures from rising more than 1.5 degrees Celsius above preindustrial levels.

"This study shows how essential it is for nations to meet their Paris commitments," Patrick Gonzalez, a U.S. climate change scientist, told Nature.

The study, which was published in the journal Science, pointed out that it didn't factor in human impacts, such as urbanization and soil degradation, into its research.

Related: Also see a town in the U.S. worried about climate change:

10 PHOTOS
Coastal Alaskan town concerned with global warming, drilling
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Coastal Alaskan town concerned with global warming, drilling
SHISHMAREF, AK - JULY 09: The village of Shishmaref, Alaska, which sits upon the Chukchi sea, is seen on July 9, 2015. Earlier this year the Obama administration approved Shell Oil to begin drilling for oil in Arctic regions, including the Chukchi sea. Shishmaref has also had to build a seawall due to a decades-long problem with coastal erosion that has shrunk the size of the barrier island the town is built upon. The town was originally supposed to be relocated to a new site, though that plan has been put on hold. (Photo by Andrew Burton/Getty Images)
SHISHMAREF, AK - JULY 09: The Chukchi sea is seen near Shishmaref, Alaska, on July 9, 2015. Earlier this year the Obama administration approved Shell Oil to begin drilling for oil in Arctic regions, including the Chukchi sea. Shishmaref has also had to build a seawall due to a decades-long problem with coastal erosion that has shrunk the size of the barrier island the town is built upon. The town was originally supposed to be relocated to a new site, though that plan has been put on hold. (Photo by Andrew Burton/Getty Images)
SHISHMAREF, AK - JULY 09: Cliff Weyiouanna relaxes in his home after breakfast on July 9, 2015 in Shishmaref, Alaska. Earlier this year the Obama administration approved Shell Oil to begin drilling for oil in Arctic regions, including the Chukchi sea. Shishmaref has also had to build a seawall due to a decades-long problem with coastal erosion that has shrunk the size of the barrier island the town is built upon. The town was originally supposed to be relocated to a new site, though that plan has been put on hold. (Photo by Andrew Burton/Getty Images)
SHISHMAREF, AK - JULY 08: A view of the beach along a barrier island in the Chukchi sea, is seen on July 8, 2015 in Shishmaref, Alaska. Earlier this year the Obama administration approved Shell Oil to begin drilling for oil in Arctic regions, including the Chukchi sea, worrying locals who live in the region and disappointing conservationists. (Photo by Andrew Burton/Getty Images)
SHISHMAREF, AK - JULY 07: The tide comes in on a beach along the Chukchi Sea on July 7, 2015 in Shishmaref, Alaska. Earlier this year the Obama administration approved Shell Oil to begin drilling for oil in Arctic regions, including the Chukchi sea, worrying locals who live in the region and disappointing conservationists. (Photo by Andrew Burton/Getty Images)
SHISHMAREF, AK - JULY 07: Rusting barrels sit on the beach along the Chukchi Sea on July 7, 2015 in Shishmaref, Alaska. Earlier this year the Obama administration approved Shell Oil to begin drilling for oil in Arctic regions, including the Chukchi sea, worrying locals who live in the region and disappointing conservationists. (Photo by Andrew Burton/Getty Images)
SHISHMAREF, AK - JULY 07: A house sits on the edge of the Chukchi Sea on July 7, 2015 in Shishmaref, Alaska. Earlier this year the Obama administration approved Shell Oil to begin drilling for oil in Arctic regions, including the Chukchi sea, worrying locals who live in the region and disappointing conservationists. (Photo by Andrew Burton/Getty Images)
SHISHMAREF, AK - JULY 08: Wild flowers grow on a beach along the Chukchi Sea on July 8, 2015 in Shishmaref, Alaska. Earlier this year the Obama administration approved Shell Oil to begin drilling for oil in Arctic regions, including the Chukchi sea, worrying locals who live in the region and disappointing conservationists. (Photo by Andrew Burton/Getty Images)
SHISHMAREF, AK - JULY 09: The village of Shishmaref, Alaska, which sits upon the Chukchi sea, is seen on July 9, 2015. Earlier this year the Obama administration approved Shell Oil to begin drilling for oil in Arctic regions, including the Chukchi sea. Shishmaref has also had to build a seawall due to a decades-long problem with coastal erosion that has shrunk the size of the barrier island the town is built upon. The town was originally supposed to be relocated to a new site, though that plan has been put on hold. (Photo by Andrew Burton/Getty Images)
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