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Study: More than half of the world's lakes are drying up

2023-05-19 17:23:11Kosova&Bota SHKRUAR NGA REDAKSIA VOX
Study: More than half of the world's lakes are drying up
Lake Garda in Italy

More than half of the world's lakes are losing water, largely due to global warming, according to a new study published today in the journal Science.

According to scientists, the drying is mainly caused by global warming and human activities.

But the report, based on satellite data, contains more than just bad news.

The authors also discovered how water loss can be reduced.

Natural lakes and dams store about 87% of the Earth's fresh water, although they cover only 3% of the planet's surface.

"In many cases these water reservoirs are under threat," the researchers said.

Spain recently reported that reservoir levels in the north-eastern region of Catalonia have reached around 26% after several months of drought.

In 2022, this figure was 58%.

In Italy, extremely low water levels were recently recorded in Lake Garda, compared to the same period in 2022, the water level is 50% lower.

In recent years, studies have shown that the volume of lakes is shrinking worldwide, with climate change consistently cited as a major factor.

However, it is difficult to determine exactly what short-term and long-term impacts global climate fluctuations have on the water stored in lakes.

Human activities such as reservoir management, water withdrawal and land use changes may also play a role.

The research team, led by hydrologist Fangfang Yao of the University of Colorado, used a technique to measure the change in water levels in the world's 2,000 largest lakes and dams, which together make up about 90% of the world's freshwater. stored in lakes.

The report is based on satellite imagery data collected between 1992 and 2020.


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