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In News
- Recently, the Scientists predicted that the melting of Zombie Ice will raise global sea level by 10 inches.
About Zombie Ice
- Background:
- The vast majority of Greenland has been covered by an ice sheet for 18 million years due to being largely located within the Arctic Circle.
- Raising the global sea levels:
- The melting of the Greenland ice sheet will inevitably raise the global sea levels by at least 10.6 inches or 27 centimetres.
- This is because of zombie ice which is certain to melt away from the ice cap and blend into the ocean.
- The melting of the Greenland ice sheet will inevitably raise the global sea levels by at least 10.6 inches or 27 centimetres.
- What is ‘zombie ice’?
- It is also referred to as dead or doomed ice.
- Zombie ice is one that is not accumulating fresh snow even while continuing to be part of the parent ice sheet.
- Such ice is committed to melting away and increasing sea levels.
- What has led to this?
- This is on account of warming that has already happened.
- The research points to an equilibrium state where snowfall from the higher reaches of the Greenland ice cap flows down to recharge edges of the glaciers and thicken them.
- What happens next?
- The scientists have projected that 3.3% of Greenland’s total ice volume will melt and this will happen even if the global temperature is stabilized at the current level.
- What does a rise in sea-level mean?
- It is bad news for millions that live in coastal zones. 8 of the world’s 10 largest cities are near the coast.
- Low lying coastal areas will take a harder hit.
- Rising sea levels will make flooding, high tides and storms more frequent and worse as their impact will reach more inland.
- It is a threat to local economies and infrastructure.
- The World Economic Forum’s 2019 Global Risks Report noted that already an estimated 800 million people in more than 570 coastal cities are vulnerable to a sea-level rise of 0.5 metres by 2050.
- According to the Intergovernmental Panel on Climate Change assessment, sea levels would rise by two to five inches by 2100 as a result of the Greenland glacier melting.
- It is bad news for millions that live in coastal zones. 8 of the world’s 10 largest cities are near the coast.
Source: IE
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