Scientists have said that even if humanity can contain the increase in global temperatures within two degrees Celsius, the ice sheets of Greenland and Antarctica will continue to melt irreversibly, Science Alert reports..

“If we miss this emissions target, the ice sheets will collapse and melt at an accelerated rate, according to our calculations,” explains climate physicist Axel Timmermann from the Institute of Basic Sciences in Korea..

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In the study, June Young Park of Busan National University and colleagues built a climate change model that included feedback mechanisms that were not present in previous simulations.. As a result, they found that the tipping point was approaching faster than expected..

“Computer models simulating the dynamics of the ice sheets in Greenland and Antarctica often do not take into account the fact that melting ice sheets will affect ocean processes, which, in turn, can affect the ice sheet and atmosphere,” Park explained..

Ice on land and at sea continues to melt at an increasing rate. Melt water that flows into the ocean is concentrated near the surface, reducing heat transfer from the depths and further raising the temperature at depth.. This extra heat could further erode the frozen buttresses holding the Antarctic Ice Shelf, causing even more meltwater to enter the ocean..

According to scientists, some of the effects of these processes can already be observed in real time.. These include rain in Greenland and increased meltwater on the Antarctic Ice Shelf.. Calculations by Park and his colleagues show that these processes will become irreversible even with an increase in global temperature by 1.8 degrees Celsius..

However, rapid sea level rise can only be avoided in the most severe mitigation scenario within 1.5 degrees Celsius.. If no drastic action is taken, sea levels could rise by 100 centimeters over the next 130 years..

Previously, scientists have said that the loss of sea ice in the Arctic could be exacerbated by severe storms that can move huge amounts of water in the form of steam.. Known as "