It is said that the cause of global warming is mainly carbon dioxide (CO2).
[Breakdown of emissions by gas in total greenhouse gas emission]
Source: IPCC Fifth Assessment Report
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Global warming occurs when the CO2 in the atmosphere absorbs heat from the sun. The higher the CO2 concentration, the more heat will be stored in the atmosphere.
[Greenhouse gases and global warming mechanism]
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Although 12 years have passed since 2005, when the Kyoto Protocol was made, the amount of emissions has hardly decreased. The pattern of increases and decreases keep repeating.
[Greenhouse gas emissions]
Source: Ministry of the Environment
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The average global temperature for the last 10 years is higher than the average temperature for any past 10 years.
[Global mean surface temperature (last decades)]
Source: IPCC Fifth Assessment Report
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Global carbon dioxide emissions in 2016 increased by 21% compared to 2005.
There are some countries where the increase is significant, although global co-operation is a challenge that must be addressed in a coordinated manner.
[Global carbon dioxide emissions (2005)]
Source: EDMC / Energy and Economic Statistics Manual 2008 version
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[Global carbon dioxide emissions (2016)]
Source: EDMC / Energy and Economic Statistics Manual 2019 Edition
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Emissions per capita in 2016 compared to 2005 are slightly decreasing in Japan, but there are some countries that have increased significantly.
[Comparison of emission ratios of major countries to global carbon dioxide emissions and per capita emissions in each country (2005)]
Source: EDMC / Energy and Economic Statistics Manual 2008 version
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[Comparison of emission ratios of major countries to global carbon dioxide emissions and per capita emissions in each country (2016)]
Source: EDMC / Energy and Economic Statistics Manual 2019 Edition
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