A scientist warns about the global level of the seas could exceed 2 meters by 2100

The global level of the seas could increase by an average of nearly two and a half meters by 2100 if greenhouse gas emissions are not reduced.

This is evidenced by an analysis of sea level changes and projections by scientists at Rutgers University and other scientists published in the Annual Review of the Environment and Resources.

The report also said that by 2300, the sea level could rise more than 15 meters, or more than 50 feet, depending on greenhouse gas emissions, such as carbon and methane .

Since the beginning of the century, the average sea level has increased by about six centimeters.

We know a lot about past and future changes in sea level, and many are uncertain

In the case of moderate emissions, global sea level rise estimates from various analyzes range from 40 centimeters to 80 centimeters by 2100 and 80 centimeters at 1.6 meters from here to 2150. From here 2300, the sea level could rise from 1.8 to 4.3 meters.

With 11% of the 7.6 billion (and the growing population) living in areas less than 10 meters above sea level, rising sea levels pose a major risk to coastal , infrastructure and ecosystems.

A significant rise in sea level would also have a major impact on the area of ​​land that can be used for crops.

The rise in sea level naturally varies depending on the place and the time. However, scientists have developed a range of methods to reconstruct past changes and therefore, estimate the potential for future sea level rise.

Despite different approaches, they claim that a clear story is emerging about what is likely to happen over the next few decades, depending on the level of carbon emissions and others. gases involved in global warming and climate change.

From 2000 to 2050, the global average sea level will probably increase by 15 to 25 centimeters, but with an elevation of 45 centimeters or more considered extremely unlikely.

Beyond 2050, projections are more sensitive to changes in greenhouse gas emissions.

"We know a lot about past and future changes in sea level, and many are uncertain, but uncertainty is not a reason to ignore the challenge," said the co-author of the report. Study, Robert E. Kopp, professor at the Department of the Earth. and planetary sciences at Rutgers University.

"It is essential to carefully characterize what is known and what is uncertain to manage the risks associated with rising sea levels for the world's coasts."

Scientists have used case studies from Atlantic City, New Jersey and Singapore to explain how current methods of reconstructing sea level change can limit future global and local projections.

They also discussed methods for using scientific sea level projections and how specific projections can lead to new sea level research questions.

According to the study, much of the rise in sea level in the 20th century, including the bulk of the global increase since 1975, is attributable to global warming caused by climate change. # 39; man.

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