Commentary: Why tropical Singapore sent an expedition to icy Antarctica

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Melting Antarctic ice could have catastrophic consequences for coastal cities. Seeing the massive ice shelves with his own eyes helped him grasp the scale of the problem, says NTU Earth Observatory of Singapore’s Professor Benjamin P Horton.

from Singapore, but the journey was 25 years in the making for me as a climate scientist.

Nanyang Technological University Earth Observatory of Singapore climate scientists collecting air samples during the expedition to Antarctica, February 2023. An EOS study found that the global mean sea level rise could exceed 1m by 2100 and 5m by 2300 if global targets on carbon dioxide emissions are not achieved.

Thwaites Glacier alone is currently responsible for around 4 per cent of annual sea level rise. Collapse could lead to more than 0.5m increase in global sea level and could also destabilise neighbouring glaciers that account for a further 3m of future sea level rise. Air was considered one of the least hospitable environments for microbes because it holds fewer nutrients and thus supports fewer organisms compared to water or soil. But airborne microorganisms may play a key role in the global climate system, as they get transported attached to dust particles that were kicked up into the atmosphere by dust storms.: The distribution of penguin colonies has changed as the sea ice conditions alter.

 

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