Climate change, sea level rise and these are the most suffering cities in the world

One of the biggest threats in the world today is due to global warming. Statistics show that by only 3 degrees Celsius higher than pre-industrial temperatures, 275 million people will have no place to live.

Since 2015, the Paris Agreement has been constantly trying to prevent global temperatures from rising, at least in the limit of 2 degrees Celsius compared to pre-industrial average temperatures.

But unfortunately, according to the forecast from 2017, by the end of this century, global temperature is likely to rise higher than that level, up to about 3.2 degrees C.

Sea level will not immediately rise but the world completely cannot avoid the flood disaster. So which countries will suffer the most severe consequences?

1. Miami - USA

Miami will be the most heavily affected city.

The temperature rises, Miami will be the worst-hit city. Here, the sea level will rise higher than any place if the temperature rises as expected. All city streets will be flooded at least 0.5m.

Even with just 2 degrees Celsius increase - just like what the Paris Agreement had signed, the entire area south of Lake Okeechobee would also flood. More than 7 million residents will lose accommodation. In Miami-Dade alone, losses in the next 15 years are estimated to average about $ 1 billion a year.

Throughout Miami now, urgency is evident. 192 million USD was spent to upgrade pumping stations, improve drainage and enhance sea-proof concrete walls.

The convenience of Miami is that all city residents are acutely aware of the problem, ready to contribute financially to protect their place of living. Proposals are therefore soon put into practice, including rainwater management plans and road improvements.

2. Osaka - Japan

Persistent storms and unrelenting rain will put Osaka at risk of being submerged first.

Persistent storms and unrelenting rain will put Osaka at risk of being submerged first. As expected, Osaka will be flooded with water, causing at least one third of the 19 million people here to be free of land.

According to reports by the Association of Concerned Scientists (CCS), sea level rises, plus storms and other factors, Osaka will lose about $ 1 billion.

In fact, Osaka has a seaport network, a coastal defense project to deal with tsunamis. However, the 2011 earthquake and tsunami disaster showed the limits of human strength.

Toshikazu Nakaaki, Osaka Environment Officer said: " We know Osaka will be seriously affected by climate change, not yet able to determine exactly what will happen and how much it will be.

Sea levels will rise at some point in the future not just forecasts, they are actually rising. "

3. Alexandria - Egypt

Most people in Alexandria are not aware of the effects of climate change.

Outside the coast of Alexandria, waves slowly licked up the plastic legs, umbrellas of beach cafes. Famous for its enchanting scenery of historical value, the city will fall to the sea if people do not act soon.

Even when the sea level rose only 0.5m, 8 million inhabitants of Alexandria were forced to evacuate.

"The vast majority of Alexandria people do not have access to knowledge about climate change. That's what I really worry about," said Kareem Mohammed, a 22-year-old student.

"Most people think that treating climate change is about 50-80 years from now," Hazem Hassan, another student, agreed.

Currently, Egypt is spending $ 700 million annually to protect the northern coasts. However, what Egypt needs more is to raise the consciousness of its residents.

4. Rio de Janeiro - Brazil

The storms in the past few years have destroyed hundreds of meters of roads covering the Macumba coast.

There are many reasons for Rio de Janeiro to worry about global warming. Flooding will not only threaten the famous beaches of Rio - like Copacabana - but also many other places including Barra de Tijuca, which hosts the 2016 Olympic Games.

The storms in the past few years have destroyed hundreds of meters of roads covering the Macumba coast - a popular surfing spot west of Rio. Big waves also killed at least two people in 2016.

"The current challenge is to raise awareness and skills to monitor ocean phenomena, changes in the seabed and the coast," said a spokesman for the City Environment Department.

5. Shanghai - China

17.5 million Shanghai residents will be forced to relocate if the sea level rises.

As one of the largest seaports in the world, Shanghai also cannot avoid the risk of flooding in the near future.

From the remote fishing village surrounded by the Yangtze River to the north, Shanghai soon developed into the most important trading place. But by 2022, it becomes one of the largest cities in the world at risk of being seriously affected by climate change.

17.5 million Shanghai residents will be forced to relocate if the sea level rises. Most of Shanghai, including the central area, the historic harbor, the airport . will sink in the sea.

The Chinese government has taken many solid steps to address this threat. They built the nation's deepest drainage system below the Suzhou River, consisting of 15km of pipelines, ensuring drainage for 58km2.