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Last time I discussed the science behind global warming and showed that the level of greenhouse gases carbon dioxide and methane in the atmosphere have deviated significantly from historical averages. Additionaly, I examined how the excess heat of global warming would be handled by the planet, specifically through the gradual increase in ocean temperatures and the melting of ice around the world. This is precisely what we are seeing as I discussed in the first part of this series.
So that brings us to my finally question: Can we do anything about it? Can we stop Global Warming?
The Kyoto Protocol is an amendment to the international treaty on climate change. It requires countries to reduce greenhouse gas emmissions or trade for "credits" if they exceed limits. The Kyoto Protocol covers 163 countries and 65% of the worlds emmissions. Here are the highlights of the treaty:
The UN regulates treaty compliance.
Developing countries do not have to reduce emissions.
Developed Countries are expected to reduce 1990s levels of emissions by 5% by 2010.
Developed Countries can buy emissions credits from developing nations through an exchange.
The US doesn't participate and accounts for 45% of the worlds greenhouse emissions.
So the net result of the treaty is the slowing of greenhouse emmissions by developed countries. Although it barely does that due to the carbon credit clause that provides a loophole as long as you provide some money to developing nations who themselves have made some environmental gestures. I'm trying to remain impartial here, but the closer you look at the treaty, the more obvious it becomes that the treaty doesn't really do much of anything at all. Even if the US adopted the protocol, emission levels wouldn't be reduced for decades.
So lets forget the empty gesture that is the Kyoto protocol for a momment and see what would happen if the developed and undeveloped world stopped greenhouse gas emissions today. The carbon dioxide in the atmosphere would be used by plants during photosynthesis and absorbed by the oceans forming carbonic acid, both of these are part of a process called "The Carbon Cycle". The carbon cycle has a period of 300 years. Considering a global rise in temperature is underway and this warming will release large amounts of carbon into the atmosphere through natural processes (basically the decomposition of plant and animals that have been preserved in the ice of the Alaskan, Siberian, and Tibetan tundras). It's doubtful we would see even a reduction from current CO2 levels for decades or longer.
Even if we stopped emissions today, it would take decades for the greenhouse gas levels to start to decline. Emission regulations won't put a dent in the problem. Not to mention that the giant heat sink oceans are absorbing all of this excess heat from the current imbalance.
So short of stopping greenhouse gas emissions completely there is little we can do to prevent the inevitable warming.
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