Science

Mumbai, Mangaluru face high risk of going under rising seas

Mumbai, Mangaluru face high risk of going under rising seas

Coastal cities around the world are at risk of severe flooding and even eventual eradication as ocean levels rise. Projecting when destructive coastal inundation could occur in your city just became easier, thanks to a new tool developed by NASA scientists. The tool looks at Earth's spin and gravitational effects to predict how water will be redistributed globally, and reportedly, India cities Mangalore and Mumbai are at a high risk of getting flooded.

Earlier this month, a major climate report released by the Trump administration revealed that global average sea level has risen by about 7-8 inches since 1900, with nearly half of that rise coming in the last 25 years. For example, ice melting from the northeastern half of Greenland will most heavily affect New York City despite some other coastal cities being closer.

The research, detailed in the journal Science Advances, could provide scientists a way to determine which ice sheets they should be "most anxious about".

Scientists can now evaluate how much an individual glacier or ice sheet melting will contribute to rising sea levels in port cities around the world, according to new research.

The research has been published in the journal Science Advances and is available online.

The GFM has now been applied to 293 major port cities to allow coastal planners to readily calculate local seal level (LSL) change.




"We can compute the exact sensitivity - for a specific town - of a sea level to every ice mass in the world", said Eric Larour told "BBC News".

It suggests that in London sea-level rise could be significantly affected by changes in the north-western part of the Greenland ice sheet.

An ice sheet is a continental glacier that covers a large area.

If the ice in the northeastern portion of Greenland melts, NY is in trouble. This makes some cities more vulnerable than others.

"This tool is very useful to understand risk from specific glaciers, and to form a complete picture of how much risk the city is under", Larour said. Researchers have warned for years that rising ocean levels will cause increasingly catastrophic floods in many places around the world, and that decades from now some big regions could be left entirely underwater.


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