Recently, Global Warming is more and more serious to human lives—Temperature rise, Glacier melt, Sea level rise… Global Warming is a long-term rise in the average temperature of the Earth’s climate system, an aspect of climate change shown by temperature measurements and by multiple effects of the warming. Most people might think that global warming is caused by human activity; however, environment have caused global warming itself as a result of climate changes, nature disaster, and changes in the deep ocean current.
The result of climate changes cause global warming. Earth’s climate has always warmed and cooled, and the 20th century rise in global temperature is in a regular constant scope. “According to a 2010 study in the Chinese Science Bulletin, the recent global warming period of the 20th century is the result of a natural 21-year temperature oscillation, and will give way to a “new cool period in the 2030s”(procon.org). The 21-year temperature oscillation have already raise the temperature 1-1.
4°F over the 20th century. In the next few year, the climate change will still affect the temperature rise. Although result of climate change are not relate to the human activity, human-produced gases still have effect on the global warming. Human-produced gases traps heat and create greenhouse effect. “Since 1751 about 337 billion metric tons of CO2 have been released into the atmosphere from burning of fossil fuels and cement production”(procon.org). The big amount human-produced gases responsible for main role of global warming and deeply affect the air in the atmosphere.
The result of nature disaster caused global warming. Increase natural disaster like hurricane activity and other extreme weather area result of natural weather patterns. “According to a 2013 report from the Tropical Meteorology Project at Colorado State University, the increase in human produced CO2 over the past century has has “little or no significant effect” in global tropical cyclone activity”(procon.org). The result of Human Produced Gas doesn’t affect too much of the global warming. It was the result of cyclical tropical cyclone patterns, driven primarily by frequent Hurricanes and extreme weather. Though the result of national disaster like hurricane affect the global warming, it may not the main reason caused global warming. “According to researchers at the Scripps institution of Oceanography, up to 60% of the changes in river flow, winter air temperature,and snowpack in the western United States were human-induced”(procon.org). Human activity take the main role in climate change like the dramatic change and heavier storm, it’s the sign of the human causing global warming.
The result of deep ocean current change cause global warming. Deep ocean current, not human activity are primary source of global warming and rising cycle.