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City Under Sea

  • 19 Dec 2019 - 15 Mar 2020

  • 10:00 - 22:00


Over the last century, human-kind has recognised that our activity is having a marked impact on our climate. Greenhouse gases, the majority of which have been emitted by humans since the industrial revolution, are being released into the atmosphere in such quantities as to cause rapid and widespread warming of our climate.


Hong Kong is on China’s southern coast, on the east side of the mouth of the Pearl River estuary. It is surrounded by sea on all sides except the North.

By 2050

According to Hong Kong observatory, the projected changes in its mean sea level (m) and its adjacent waters, varies depending on the different greenhouse gas concentration scenarios.


Key impacts under all scenarios

  • Increasing average temperatures throughout the year.
  • Increasing frequency of heat wave events.
  • Non-uniform changes in precipitation, with wet areas becoming wetter and dry areas becoming drier.
  • Precipitation occurring in stronger instances.
  • Global sea level rise.  
  • More frequent inundation of coastal flood defences as extreme sea level return periods become shorter.


By 2100 (Worst case scenario)

Temperatures across Hong Kong are expected to rise, by 4°C for the 21st century. This will result in an increase in the number of warm, hot and humid days and nights. 


Extreme* sea level rise will result in great portion of the city to be covered in water.