2) “Global warming” refers to the global-average temperature increase that has been observed over the last century or more. But to many politicians and the public, the term carries the implication that mankind is responsible for that warming. However, this is greatly debated in society with many non-governmentally funded research programmes providing evidence to suggest that global warming is mostly natural, and that the climate system is quite insensitive to humanity’s greenhouse gas emissions and aerosol pollution.
Very little research has ever been funded by the government to search for natural mechanisms of global warming. It has almost been assumed that this chnage is manmade. This assumption is rather easy for scientists to make as they often do not have enough accurate global data for a long enough period of time to see whether there are natural warming patterns and what kind of correlation there is between previous global warming and this.
The United Nation’s Intergovernmental Panel on Climate Change (IPCC) claims that the only way they can get their computerized climate models to produce the observed warming is with anthropogenic (human-caused) pollution. But they’re not going to
The basics of why so many scientists believe global warming to be manmade is that the earth’s atmosphere contains natural greenhouse gases (mostly water vapor, carbon dioxide, and methane) which act to keep the lower layers of the atmosphere warmer than they otherwise would be without them. Greenhouse gases trap infrared radiation and mankind’s burning of fossil fuels (mostly coal, petroleum, and natural gas) releases carbon dioxide into the atmosphere and this is believed to be enhancing the Earth’s natural greenhouse effect. As of 2008, the concentration of carbon dioxide in the atmosphere was about 40% to 45% higher than it was before the start of the industrial revolution in the 1800’s.
It can be noted that, even though carbon dioxide is necessary for life on Earth to…