Climate Change In The 21st Century

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Scientists have studies Earth's climate changes for decades, by analyzing many indirect measures of climate such as ice cores, tree rings, glacier lengths, pollen remains, and ocean sediments, as well as by studying the change in Earth's orbit around the sun. This study shows the climate system changes over time over a full range time scales. However, before the Industrial Revolution in the 1700s can be explained climate change by natural causes, such as changes in solar energy, volcanic eruptions, and natural changes in greenhouse gas concentrations. Recent climate changes cannot be explained by natural causes alone. The study indicates that natural causes are not only influenced our climate change in the 21st century. Rather, it is extremely…show more content…
According to Environmental Defense Fund, "Burning fossil fuels such as coal or petroleum sends carbon dioxide, methane and other heat-trapping "greenhouse gasses" into the atmosphere. Gradually temperatures climb" When humans burn coal, oil, and gas to generate electricity or drive our cars, carbon dioxide is released into the atmosphere, where it traps heat. A carbon molecule that comes from fossil and deforestation is "lighter" than combined signal of those from other sources(EDF). As scientist measure the "weight" of carbon in the atmosphere over time, they see a gradually increase in the lighter molecules from fossil fuel and deforestation sources that correspond closely to the known trend in emissions(UCSUSA). Assume it like a thermal blanket around the Earth. "Chopping down vast swaths of forests,…show more content…
It filtered the sunlight through the atmosphere, light-colored surfaces could radiate some heat back into space. However, the Earth will keep most heat warms the planet's surface. The Earth also radiates some heat back into the atmosphere, which some of the heat will be trap by greenhouse gasses in the atmosphere, which including carbon dioxide. As the greenhouse gasses build up in the atmosphere, it will be thickening with more greenhouse gasses, which will trap more heat. As the more heat hold by greenhouse gasses, the temperate will rise, which cause climate change. First demonstrated of atmospheric carbon dioxide in warming the Earth's surface was Swedish scientist Svante Arrhenius over 100 years ago. Ever since scientific data have established at the time. Since then, scientists have recorded every change of temperature by analysis the atmospheric CO2. The record shows burning coals, oil and natural gas have emitted roughly 500 billion tons of CO2 that abort by the atmosphere since Industrial Revolution (NWF). For this reason, scientist believed burning coal and oil are biggest factors for recent climate change

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