swindle 在wiki內容有更改 4/20的版本 為本次考題答案
摘錄如下On contradictions in the theory of anthropogenic global warming(1)Records of atmospheric carbon dioxide (CO2) levels since 1940 show a continuing increase, but during this period, global temperature decreased until 1975, and has increased since then. (2)Theories of global temperature increase due to enhanced greenhouse gas concentrations predict that the temperature high in the troposphere should increase at the same rate as it has near the surface, but satellite and weather balloon data as of 2001 did not show this. (3)The correlation between carbon dioxide levels and temperatures demonstrated by Al Gore in An Inconvenient Truth, while true, show that carbon dioxide increased after the increase in temperatures—calling into question the claim that that the rise in carbon dioxide levels are the cause of the observed increases in temperature. (4)Carbon dioxide levels increase or decrease due to temperatures increasing or decreasing rather than temperatures following carbon dioxide levels, because the Earth's oceans absorb carbon dioxide when they are cooler, and release it when they are warmer. Due to the large oceanic mass it takes decades or centuries for the reaction to temperature changes to occur, which is why analysis of the Vostok Station and other ice cores shows that changes in the level of atmospheric carbon dioxide follow changes in global temperature, with a lag of 800 years. (5)Water vapour makes up 95% of all greenhouse gases and is the component of the atmosphere that has the largest impact on the planet's temperature, through cloud formation and associated reflection of incoming solar heat. Scientists cannot accurately model the effects of clouds when attempting to simulate future weather patterns and their effects on global warming. (6)Carbon dioxide is only a very small percentage of the atmosphere (0.038%) and humans only contribute a small part of the total CO2 emissions in a year (less than 1%). Volcanos, on the other hand, produce more than all the cars and factories in the world. This means that human CO2 emissions cannot be the main cause of global warming. (7)Solar activity is currently at a high level, and likely to be the cause of the current global warming. The mechanism involves cosmic rays aiding cloud formation, and the solar wind deflects cosmic rays away from Earth during periods of high solar activity. Solar activity levels are far more relevant than the small percentage of greenhouse gases being emitted by humans described in other theories. (8)According to the work of Eigil Friis-Christensen, changes in solar activity match changes in global temperatures much more accurately than do changes in CO2 levels. (9)The current warming is nothing unusual and was surpassed during the Medieval Warm Period. This was a time of great prosperity in Europe, highlighting the beneficial effects of increased temperatures.