Global crisis caused by climate crisis

DEEP
ISSUE

The planet is approaching boundary limits.
We must make this decade a time of action and change.

The planet is approaching
boundary limits.
We must make this decade a
time of action and change.

Antonio Guterres, Secretary-General of the United Nations


Global crisis caused by climate crisis.

Super Typhoon毎年複数の大型台風災害
Grobal Drought世界的干ばつ
Pandemic感染症
Rain Bomb超集中豪雨
Water Scarcity水不足
Global Wildfire世界的山火事
Sea Level Rise海面上昇
Heat Wave殺人熱波
Agriculture Crisis農業壊滅
Dying Sea死にゆく海
Air Pollution大気汚染
Climate Refugees気候難民
Super Typhoon毎年複数の大型台風災害
Grobal Drought世界的干ばつ
Pandemic感染症
Rain Bomb超集中豪雨
Water Scarcity水不足
Global Wildfire世界的山火事
Sea Level Rise海面上昇
Heat Wave殺人熱波
Agriculture Crisis農業壊滅
Dying Sea死にゆく海
Air Pollution大気汚染
Climate Refugees気候難民
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Damage caused
by sea level rise.

Economic damage from sea level rise is estimated to be about $1.1 billion worldwide in 2019, and by 2100, according to IPCC research data, sea levels will rise 1 meter above current levels.
It is believed that the rising sea level will also cause damage such as urban salt pollution and urban infrastructure collapse. Currently, the Earth's surface area is approximately 500 million ㎢. The surface area of the earth is about 150 million ㎢. Of that, 2% is urban area, which is about 3 million square kilometers. Cities are home to 4.1 billion people, or 54% of the world's population. Since ancient times, cities have been located near oceans and rivers. Even today, 67% of cities are located in areas adjacent to seashores and rivers. This means that approximately 2 million square kilometers of the urban area calculated above will face damage from sea level rise.

海面上昇が及ぼす被害海面上昇が及ぼす被害Source:Prepared by N-ARK Inc.

Sea Level Rise Risk
Economic Scale to 2100

The Basque Center for Climate Change in Spain and other research groups estimated the economic damage associated with sea level rise in 2020 for 136 major coastal cities around the world. Under a scenario with no reduction in greenhouse gas emissions, they estimated that the total damage (median) for all cities in 2100 would be $8.3583 trillion. The city with the greatest damage is Guangzhou, China, with $1.3923 trillion. In Japan, Osaka-Kobe, Tokyo, and Nagoya were estimated to suffer $342.3 billion, $270.4 billion, and $204.1 billion, respectively. In the scenario where sea level rises significantly due to the melting of ice sheets in Antarctica and other regions, the total damage to the 136 cities would be even higher at $11.507 trillion.
Reference: The Nikkei artickle about Cities and the Climate Crisis Spreading "Zero Meter" Cities.

Whole world$8.3583Trillion
Guangzhou,China$1.3923Trillion
Kobe・Osaka$342.3Billion
Tokyo$270.4Billion

Impact Risk to
Eastern Tokyo in 2030
Economic Scale Simulation

Reference: Nikkei Shimbun, "Zero elevation zone, Tokyo doubles to 1.57 million with sea level rise of 1 meter.”
  • AverageProjected average damage per year
    • Sea level rise1.3cm rise
    • Tokyo economic damageapprox. $3.3 billion
    • Tokyo affected populationapprox. 25,000
    • Tokyo submergence risk areaapprox.3㎢
  • 2030Projected Disaster Scale
    • Sea level rise 9.1 cm above 2022
    • Tokyo economic damageapprox. $25 billion
    • Tokyo affected population approx. 200,000 people
    • Tokyo submergence risk areaapprox.24㎢(24,000,000㎡)
  • 2050Projected Disaster Scale
    • Sea level rise49.4cm rise above 2022
    • Tokyo economic damageapprox. $25 billion
    • Tokyo affected populationapprox. 780,000 people
    • Tokyo submergence risk area:approx. 112㎢
  • 2100Projected Disaster Scale (world)
    • Sea level rise1m
    • Tokyo economic damageapprox. $270.4 billion
    • Tokyo affected populationapprox. 1,570,000 people
    • Area below sea level in Tokyo areaapprox. 225㎢

In order to solve these problems,
we would like to build approximately 200,000km²
of maritime area around the world,
which is 1% of the current urban area.
In order to solve these problems,
we would like to build approximately 200,000km²
of maritime area around the world,
which is 1% of the current urban area.