Sinking Feeling: Loss of land-ice will have devastating consequences

By: |
May 07, 2021 6:30 AM

The warming trajectory under the current climate pledges will cause ice-melt to raise ocean levels by 25 cms by 2100

The impact of the rise in sea levels should be obvious.The impact of the rise in sea levels should be obvious.

It had been always known that the existing national climate commitments were weak—just how weak has been made apparent by a new study published in Nature. A multi-country study involving 84 scientists has found that if nations meet their goals of today, melting of just land-ice due to the resultant rise in temperature will raise oceanic levels by 25 centimetres by 2100. With many countries not even on the pathway to that target warming, expect worse. On the other hand, if signatories try and keep warming down to 1.5-2oC, the estimated rise in sea-levels falls to 13 cm. The findings are consistent with other warming-impact forecasts modelled on current action-trajectories. Current pledges on emission reduction and changing energy use will lead to more than 3°C of warming by 2100.

The impact of the rise in sea levels should be obvious. A rise in coastal flooding, causing massive migration further inland; this will increase the pressure on existing resources. Loss of land-ice will have devastating consequences for freshwater availability in many countries; large swathes of northern India, for instance, are dependent of annual melting of mountain-ice that feed large rivers in the region. While the sea-level has risen around 23 cms since 1880, its rise since the 1990s now accounts for a third of the historic total, reports Bloomberg. Without far more ambitious mitigation and emission reduction efforts—the US’s recent announcements would be a template for the want of something better—the picture is bleak.

Get live Stock Prices from BSE, NSE, US Market and latest NAV, portfolio of Mutual Funds, Check out latest IPO News, Best Performing IPOs, calculate your tax by Income Tax Calculator, know market’s Top Gainers, Top Losers & Best Equity Funds. Like us on Facebook and follow us on Twitter.

Financial Express is now on Telegram. Click here to join our channel and stay updated with the latest Biz news and updates.

Next Stories
1More than meets the eye: For-profit edtech is impacting education, just not in the conventional way
2Inflexion Points: Need a ‘greenprint’ for the economy
3Protecting IBC’s spirit: NCLT focus on confidentiality clause in Videocon Industries resolution welcome