The foundation of global warming belief is rising co2 levels. Scientific fact that co2 chases temp not the other way around as the green gang preach. Now 3 government labs have been shut done for falsifying records concerning climate change, why lie? Check the Vostok ice core sample study where there has been higher c02 many times in history than today, many times before the industrial revolution. Alternative energy companies going bankrupt with our tax dollars, carbon taxes, hypocrisy. One of the famous big mouth spokes person used electrical energy in one month in one of his houses equal to what I use in a year and a half. Al Gore has gotten rich as ...., I am very conservative, pollute and produce garbage as little as I can, but this is a scam. Methods of measurements now that have an accuracy of .01 comparing to reading on instruments with an accuracy of 2, there are so many indicators that this is bunk, that's not even in the range of error that they report is the difference.
"This statement does not tell the whole story. The initial changes in temperature during this period are explained by changes in the Earth's orbit around the sun, which affects the amount of seasonal sunlight reaching the Earth's surface. In the case of warming, the lag between temperature and CO2 is explained as follows: as ocean temperatures rise, oceans release CO2 into the atmosphere. In turn, this release amplifies the warming trend, leading to yet more CO2 being released. In other words, increasing CO2 levels become both the cause and effect of further warming. This positive feedback is necessary to trigger the shifts between glacials and interglacials as the effect of orbital changes is too weak to cause such variation. Additional positive feedbacks which play an important role in this process include other greenhouse gases, and changes in ice sheet cover and vegetation patterns."
A 2012 study by Shakun et al. looked at temperature changes 20,000 years ago (the last glacial-interglacial transition) from around the world and added more detail to our understanding of the CO2-temperature change relationship. They found that:
"¢The Earth's orbital cycles triggered warming in the Arctic approximately 19,000 years ago, causing large amounts of ice to melt, flooding the oceans with fresh water.
"¢This influx of fresh water then disrupted ocean current circulation, in turn causing a seesawing of heat between the hemispheres.
"¢The Southern Hemisphere and its oceans warmed first, starting about 18,000 years ago. As the Southern Ocean warms, the solubility of CO2 in water falls. This causes the oceans to give up more CO2, releasing it into the atmosphere.
"While the orbital cycles triggered the initial warming, overall, more than 90% of the glacial-interglacial warming occured after that atmospheric CO2 increase (Figure 2).
Figure 2: Average global temperature (blue), Antarctic temperature (red), and atmospheric CO2 concentration (yellow dots)."
