What Motion Changes Take Place During Milankovitch Cycles
Milankovitch’s work was supported by other researchers of his time, and he authored numerous publications on his hypothesis. But it wasn’t until about 10 years after his death in 1958 that the global science community began to take serious notice of his theory. In 1976, a study in the journal Science by Hays et al. using deep-sea sediment cores found that Milankovitch cycles correspond with periods of major climate change over the past 450,000 years, with Ice Ages occurring when Earth was undergoing different stages of orbital variation.
According to some evidences it has increased by .12 watts per square meter since 1750 (Brennan & Media 2012). Milankovtich Cycles refers to the phenomenon of change or variance in position of Earth with respect to sun due to changes in Earth’s orbit. Theses cycles though have very low short-term impact when it comes to climate change. Water vapor is the most abundant natural Green House Gas. Increase in water vapor concentration could/ does have significant effect on the process of Global warming. Volcanic eruptions emit CO2 when they erupt and hence they are responsible for Global warming though in a very small manner. Moreover, there are other Green House Gases like Methane, which are created naturally and also contribute to the problem of global warming. Onthe other hand, the primary cause of global warming by humans is due to the carbon dioxide released when fossil fuels like oil and coal are burned for energy (ygoy 2012). Wide scale industrialization and technological advancements has contributed massively to the cause of Global warming. All forms of transport, which consume one or the other forms of fossil fuels, are culprits too. Increase in population and Deforestation have increased the CO2 emissions to exaggerate an already serious issue. Chiefly, the close examination on comparison of both natural and human causes of global warming clearly put the main share of blame on human causes. According to study by European scientists, the natural cosmic ray or solar irradiance contribute less than 14% to global warming (Statsburg 2009).
Finally, Earth is currently in an interglacial period (a period of milder climate between Ice Ages). If there were no human influences on climate, scientists say Earth’s current orbital positions within the Milankovitch cycles predict our planet should be cooling, not warming, continuing a long-term cooling trend that began 6,000 years ago.
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Ygoy. ”Human causes of global warming” YGOY. 20 April 2013. Web. 2012