The Nature study, which brings together 84 authors from 62 institutions, projects future sea level rise using the latest models and future pathways. It estimates that, if current pledges to reduce emissions are met, land-ice loss will drive around 25cm of sea level rise by 2100. However, this falls to 13cm if warming is limited to 1.5C above pre-industrial levels.
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The amount of sea level rise facing coastal cities as a result of ice melt could be roughly halved if the world meets the Paris Agreement’s toughest goal of holding climate change to 1.5°C of warming.
Coastal flooding would still worsen as meltwater from glaciers and ice sheets would raise seas by an average 13 centimetres by 2100, a new overview of computer modelling suggests. But failure to rein in carbon dioxide emissions leading to global warming of 3.4°C would see a 25-cm increase from ice melt.
Limiting global heating to 1.5C above pre-industrial levels could halve the amount of sea level rise from melting land ice this century, when compared to a scenario based on current climate pledges, a study finds.
The world can avoid the worst effects of rising sea levels if the world’s countries are able to limit warming to 1.5 degrees Celsius, a study released Wednesday found.
The study, posted at Nature.com, found that the rate of melting sea ice could be cut in half should countries meet the ambitious target for limiting warming. Currently, the world is on pace to warm 3 degrees by 2100.