Global Environment

State of the Global Environment at a Glance: Global Warming

The concentration of atmospheric carbon dioxide, a leading cause of global warming, continues to increase with the world's population growth and rising industrialization. One scenario by the Intergovernmental Panel on Climate Change (IPCC) projects that a doubling of the atmospheric equivalent CO2 concentration would increase the global temperature by about two degrees by the year 2100, resulting in a rise of around 50 cm (max. 95 cm) in the sea level of the world's oceans. In terms of the share of carbon dioxide emissions by different countries, Japan ranks fourth in total emissions, accounting for 4.8% of the world's total carbon dioxide emissions.


Carbon dioxide concentration in the atmosphere


Carbon dioxide emissions by country (1995)

Carbon dioxide emissions by country (1995)

Note: Estimate by the Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory (U.S.A.)

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