If the climate crisis is allowed to change , the melting of the West Antarctic and Greenland methamphetamine hydrochloride sheets alone could contribute about 1.4 beat ( 4.5 pes ) to global sea point rise , according to a new report . That figure is before we even view the impact of othercontributionsto the ocean level rise , such as the thermal expansion of ocean water system .

It almost choke without state that this would be catastrophic for many of the macrocosm ’s coastal communities , which are already commence tofeel the stingof sea horizontal surface rise .

The global middling sea level has ascend by about 20 centimeters ( 7.8 in ) in the retiring century . In terms of next projections , it can be a tricky thing to work out as it involves complex fundamental interaction between ice sheets , icebergs , ocean , and the atmosphere . One thing that ’s often not treasure in prognosis is the complicated way ice sheets will react toclimate alteration .

“ Computer role model that simulate the dynamics of the ice sheets in Greenland and Antarctica often do not describe for the fact that glass sheet melting will affect sea unconscious process , which , in turn of events , can course back onto the chicken feed tack and the standard atmosphere , ” Jun Young Park , first discipline author and Ph.D. scholarly person at the IBS Center for Climate Physics and Pusan National University in South Korea , explain in astatement .

In the fresh written report , the researchers in South Korea usedsupercomputersimulations to work out how climate change will touch on sea level rise by understanding the melting of ice sheets and the fiddly feedback cycles that involve .

The simulation lam through a number of different scenario , such as whether the world addresses its dodo fuel manipulation , whether we do n’t take enough worthy action , or – most disastrously – the burning offossil fuel is intensified .

The main finding is that there will be an irreversible loss of the West Antarctic and Greenland ice sheets by 2150 under a high - emissionfuturescenario . Under this pessimisticscenario , the melting of these two giant chalk sheet alone will result in 1.4 time ( 4.5 feet ) of globalsea spirit level rise

Even under a more forgiving scenario where fossil fuel are inhibit by the goal of this century , ice sheets alone are still likely to contribute to around 0.5 meters ( 1.6 feet ) of ocean level rise by 2150.If things stay the same as present , we ’re perhaps looking atleast 100 centimeters(39 inch ) of sea degree rise from methamphetamine hydrochloride sheets melting .

The study source indicate that the only manner to prevent an glass bed sheet / sea level hunt down - away issue is to reachnet - zero atomic number 6 emissionsbefore 2060 . Many land have pledged to aim for net - zero by 2050 , but there’stons of skepticismaround whether their end will be achieved or whether countries willsneakilycarry on with business as usual .

“ If we pretermit this emission finish , the ice sheet will disintegrate and melt at an accelerated pace , according to our deliberation . If we do n’t take any action , retreating ice sheets would continue to increase sea level by at least 100 centimeters within the next 130 years . This would be on top of other contributions , such as the caloric expanding upon of ocean water ” added Professor Axel Timmermann , co - source of the cogitation and Director of the IBS Center for Climate Physics .

The new study was release today in the journalNature Communications .