The report does not really reveal new information about the causes and effects of global warming. This report however confirms that mankind through the emission of greenhouse gases (in particular carbon dioxide, CO2) is the cause of global warming. Mitigation of global warming will only be possible with a drastic reduction of the world-wide emission of carbon dioxide (CO2). Carbon dioxide is produced when fossil fuels (coal, oil and gas) are burned.
The important thing about this report is the fact that its findings and conclusions have been accepted by hundreds of climate experts and governments world-wide. There is no doubt any more that urgent action is needed, nobody can ignore climate change any more and call global warming "an illusion of greens".
The International Energy Agency (IEA) predicts a strong increase of the carbon dioxide emissions by the year 2030. Additionally, IEA investigated to which extent the above mentioned emissions of CO2 could be prevented if politics applied rigorous measures.
From all measures investigated, nuclear energy was found to have the least effect (only 10%). Almost 80% of the desired effects are due to increasing the energy efficiency.
This result is surprising, in particular if you think about how nuclear power is praised as solution to global warming by politicians like George W. Bush and Tony Blair. It seems like they would (again) head into the wrong direction.
Instead of talking about measures to increase the energy efficiency, which accounts for 80% of the effects, some politicians propagandize building nuclear power plants, which according to IEA can only account for 10% of the desired effects. Here the focus is clearly on the wrong subject!
The following graph shows the cumulative CO2 (carbon dioxide) emissions by country for the years 1900 until 2002. This is the sum of all CO2 emissions in the years 1900 until 2002 for each developed country. Data source was the World Resources Institute (WRI).
On the page link here, you can find the CO2 emissions by country and/or per capita by country .
It does make sense to look at the sum of all CO2 emissions because the lifetime of the greenhouse gases like CO2 in the atmosphere is between 50 and 200 years. The current global warming is an effect of all greenhouse gases put in the atmosphere during the last 100 years, global warming is not just caused by the greenhouse gases emitted this year or last year! This is also one of the reasons why immediate action is required to reduce the emission of greenhouse gases like carbon dioxide, because the effects of the greenhouse gases will last for about 100 years.
A carbon footprint is defined as:
The total amount of greenhouse gases produced to directly and indirectly support human activities, usually expressed in equivalent tons of carbon dioxide (CO2).
The graph shows the total CO2 emission in million tons by country for the year 2002. Data source was the World Resources Institute (WRI). The CO2 emissions for the year 2006 are about 12 to 15% higher than the figures shown here.
The second chart shows the CO2 emissions by capita and country for the year 2002. Data source was again the World Resources Institute (WRI). Some remarks to these values:
According to the American Energy Information Administration (EIA) and to the International Energy Agency (IEA), the world-wide energy consumption will on average continue to increase by 2% per year.
A yearly increase by 2% leads to a doubling of the energy consumption every 35 years. This means the world-wide energy consumption is predicted to be twice as high in the year 2040 compared to today (2007).
By far the highest increase in world-wide energy consumption is predicted to be from all three fossil fuels: oil, coal and natural gas (see graph)! The renewable energies are predicted to grow as well, but much less than fossil energies. Nuclear energy is predicted to grow relatively moderate.
It is only possible to mitigate global warming if the world-wide consumption of fossil fuels can be drastically reduced in the next 10 to 15 years. There is simply no room for a scenario as it is predicted by the International Energy Agency IEA.
It is also obvious that no combination of alternative technologies can replace the current usage of fossil fuels. There is simply not enough non-fossil fuel available for this. In order to mitigate global warming, we have to use the available energy much more efficiently. But this won't be enough either: We will have to change our behaviour to reduce our personal energy consumption. We must change our current live style and seriously strive for a sustainable living .
Read on for details and background...
There are two major effects of global warming:
More details about these effects of global warming :