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The climate organization simulates global warming, if it rises by 3 degrees, the waterfront in Hong Kong Central will retreat to HSBC Headquarters

2021-10-26T23:49:42.303Z

Hong Kong is not immune to the intensification of the climate change problem. According to the latest research by Climate Central, the climate-focused organization, if the global average temperature rises by 3 degrees Celsius by the end of this century, about 50 cities will face sea level



Hong Kong is not immune to the intensification of the climate change problem.

According to the latest research by Climate Central, a climate-focused organization, if the global average temperature rises by 3 degrees Celsius by the end of this century, about 50 cities will face the threat of rising sea levels and will need to take "unprecedented" defensive measures, otherwise they will lose their residential land. .

The study also pointed out that although the threat is global, the most affected cities are concentrated in Asia.


The study also ranked Hong Kong as the top 20 most affected areas in the world. It is estimated that if the average temperature rises by 3 degrees, 61% of the population in Hong Kong will be inundated.

Climate Central has also produced a simulation map to predict that scenic spots around the world will heat up by 1.5 degrees and 3 degrees, and sea levels will rise.

Take Hong Kong as an example. If the temperature rises by 3 degrees, the Central Waterfront will be submerged in a large area, and the Central Pier will be nearly "covered."


The “Intergovernmental Panel on Climate Change” (IPCC) under the United Nations released the first part of the sixth assessment report (AR6) in August this year, warning that continued sea level rise is irreversible and that even if the global warming is limited to 1.5 degrees, The sea level will still rise by at least about 2 to 3 meters on average.

Climate Central, together with researchers from Princeton University and other institutions in the United States, used global altitude and population data to analyze that under the high carbon emission scenario, it is estimated that the global average sea level will rise by 8.9 meters in the period from 200 to 2000.

If the global emissions remain unchanged, it will cause the global average temperature to rise by 3 degrees.

Among the 50 major cities in the world, those mainly in Asia need to withstand unprecedented sea level, otherwise they will lose part or almost all of the existing areas.

If the temperature rises by 3 degrees, the sea level may flood the land where more than 800 million people live in the world when the tide rises.

Studying simulated water level rise, global warming of 1.5 degrees, Central coastline has receded to Des Voeux Road

The study also stated that the threat of global warming will be concentrated in Asia. After a temperature rise of 3 degrees, the place where about 43 million people live in China will be below sea level by the end of this century.

The research team also produced a simulation map, assuming sea level rise, including many Hong Kong landmarks, such as the second phase of the International Finance Center.

The simulation diagram shows that if the global warming is 1.5 degrees, the coastline of Central will occupy the Des Voeux Road Central in front of the HSBC Headquarters; if the temperature is 3 degrees, large areas of the new reclamation area in Central will be flooded, and the lower building of the Hong Kong City Hall will be flooded. Half of the seat will be flooded.

The study emphasized that substantial reduction of carbon emissions is a topic of concern to all coastal countries or regions, and all regions should immediately reduce emissions and reduce carbon emissions to half of the current level by 2030.

▼Typhoon ``Mangosteen'' hit Hong Kong in 2018▼


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Drainage Services Department, Land Development Department: update relevant design standards as needed

As for the Hong Kong Government's response to the rising water level caused by global warming?

When the Drainage Services Department responded to the "Hong Kong 01" enquiry, it stated that the Department will continue to closely monitor the latest IPCC data, update relevant design standards as needed, and review the overall rainwater discharge plan study and related models to prepare for future needs.

The flood prevention projects currently underway or planned include the revitalization of the Tsui Ping River and the Yuen Long flood prevention dam project.

The Civil Engineering and Development Department stated that it had updated the "Harbour Engineering Design Manual" in accordance with the medium greenhouse gas concentration scenario at the beginning of 2018, in which it is estimated that the average sea level of Hong Kong will rise by about 0.49 meters at the end of this century.

The construction of the wave wall in the Tseung Kwan O Waterfront Park and the construction of the wave wall in Aberdeen Typhoon Shelter, etc. which the department is responsible for are all designed in accordance with the updated "Harbour Engineering Design Manual".

The department also stated that it will closely monitor the latest data based on the assessment of IPCC AR6, and review and update relevant design standards and manuals in a timely manner.

01News

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Source: hk1

All news articles on 2021-10-26

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