Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.
By: Dr. Jeff Masters , 20. helmikuuta 2006 klo 03:34 (GMT)
Last week marked the one-year anniversary of the Kyoto Protocol, which went into effect on February 16, 2005. The world's industrialized countries that signed the Protocol are legally obligated to reduce their emissions of greenhouse gases such as CO2 by a total of 5.2% (compared to 1990 emissions) by 2012. The U.S. and Australia did not participate, and developing countries were not asked to. About 50% of world's emissions of greenhouse gases come from Kyoto nations, so if the treaty were successful, global emissions would fall by about 2.6%.
How are the signatory nations doing so far?
Not very well, according to both critics and supporters. It seems unlikely that Kyoto's goal will be met by 2012. For example, the European Environment Agency warned in November that the European Union was likely to cut its emission by only 2.5% by 2012, not the 8% they promised under the Kyoto Protocol. It now appears that the only EU members that might meet their targeted reductions are Sweden and the UK.
Below I've tablulated recent estimates (usually from 2003 or 2004) of how the various countries are doing, percentagewise, in terms of slashing their emissions compared to the 1990 benchmark.
Greenhouse gas emission increases, by nation, since 1990
EU countries (15% of world's total emissions)
Other Kyoto protocol countries:
Russia -35% (6% of world's total emissions)
Japan +19% (5% of world's total emissions)
Canada +24% (2% of world's total emissions)
Czech Republic -23%
U.S. +16% (25% of world's total emissions)
India +80% (5% of world's total emissions)
China +46% (15% of world's total emissions)
Australia +31% (2% of world's total emissions)
Britain, Germany, and the former Soviet bloc countries have made big reductions. However, their cuts have had litte to do with Kyoto. Germany and some Soviet bloc countries got big one-time savings by closing inefficient coal-fired plants in the early 1990s after the collapse of the Soviet Union. Economic hard times have also contributed to the emissions reductions in some of these countries. In the UK, electric utilities in the 1990s shifted from burning coal, which has high CO2 emissions, to cleaner-burning natural gas. Now that the price of natural gas has risen relative to coal, more UK utilities are burning coal. CO2 emissions are increasing once more, and were up over 1% in 2004 compared to 2003. The UK was slated to make a 12% cut in emissions under the Kyoto pact, and the government announced last week that this was unlikely to happen.
What can countries who are failing to meet Kyoto targets do?
Under the U.N.'s "clean development mechanism," developed countries are allowed to exceed their emissions allowance by investing in emissions projects in less-developed nations, trading the emission reduction abroad for emissions output at home. It is likely that many nations will resort to this trick in the coming years in order to meet the Kyoto requirements.
What happens if a country misses its Kyoto Protocol target in 2012?
Then they have to pay back at a penalty rate (130%) in the years after 2012, when there will presumably be a new agreement for the 2013-2018 period. Negotiations to hammer out a successor agreement are set to begin in May 2006 in Bonn, Germany. It is possible that countries that are failing to meet their Kyoto Protocol targets for 2012 will choose not to sign successor agreement, to avoid the penalty. Also, any nation that signed the Kyoto Protocol is allowed to drop out after three years--on February 16, 2008. Some nations may take this route to avoid the penalty.
Is Kyoto having a significant impact?
The Kyoto Protocol's target of a 5.2% reduction in emissions is tiny compared to what is needed in order to prevent substantial warming. Critics say this proves the worthlessness of the treaty, while supporters say it is a neccesary first step. In order to achieve a maximum 2�C temperature rise, some studies project global CO2 cuts of 50% by 2050 are required. Industrialized countries would have to cut their CO2 emissions by 80%. Considering that the world's nations that are trying to reduce emissions via the Kyoto Protocol are unlikely to meet even a 5% reduction, it looks pretty likely that we'll be seeing a much warmer world by the end of the century.
Is there hope for avoiding a major warming this century?
There is a large amount of uncertainty in both the social and scientific aspects of climate change that leave some hope that we will avoid warming the Earth by 2�C this century. I've composed a list of five possible scenarios that might cause this, and ordered them from most likely to least likely:
Dr. Jeff Masters' top five list of 21st Century scenarios that might keep us from warming 2�C this century:
1) A dramatic climate change disaster or potential disaster will suddenly unfold, spurring the nations of the world to cut emissions drastically (similar to what the emergence of the Antarctic Ozone Hole did for regulating CFCs).
2) We luck out, and climate change turns out to be at the cool end of the scientific uncertainty estimates.
3) The global economy will crash due to war, natural disaster, climate change, or other causes, bringing drastically reduced emissions.
4) A revolutionary low-cost energy technology will emerge to replace fossil fuels.
5) Aliens will land and give us their non-polluting, limitless energy technology.
I'm hoping for scenario #4 or #5, but I think there is a significant chance scenario #1 will happen in the period 15 to 50 years from now. We may well be pushing the climate system too hard and in too many ways to avoid triggering a climate shift that will cause big trouble for a lot of people. I'll expand on the possibilities in future blogs this month.
Next blog (probably on Wednesday): A possible candidate for scenario #1: the bad news from Greenland reported last Friday in Science magazine.
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