Global warming exists.

Signs that the Earth is warming are recorded all over the globe. The easiest way to see increasing temperatures is through the thermometer records kept over the past century and a half. Around the world, the Earth's average temperature has risen more than 1 degree Fahrenheit (0.8 degrees Celsius) over the last century, and about twice that in parts of the Arctic. This doesn't mean that temperatures haven't fluctuated among regions of the globe or between seasons and times of day. But if you average out the temperature all over the world over the course of a year, you see that temperatures have been creeping upward. http://environment.nationalgeographic.com... Scientists say global warming is real. Warming of the climate system is unequivocal, and scientists are more than 90% certain that most of it is caused by increasing concentrations of greenhouse gases produced by human activities such as deforestation and the burning of fossil fuels. These findings are recognized by the national science academies of all major industrialized nations. http://en.wikipedia.org... My opponent stated: "Not only have the US temperatures been flat for the last 10-15 years, but a similar pattern is happening in Canada. The Canadian national annual, summer and winter temperature departures from the 1961-1990 averages have been flat for 10-14 years when measured on Excel linear trend and based on Environment Canada's own data. Comparing today's winter temperature departure with that of the period 1961-1990 can be misleading since the 1961-1990 period was low or cool phase of the planet's 60 year cycle and any comparison will always show warming not due to man generated global warming, but due to natural and regular changes (30 years of cooler weather followed by 30 years of warmer weather) in the planets climate pattern. It is like comparing summer temperatures with winter temperatures, the summer will always show warming." When my earlier argument came to this conclusion: This doesn't mean that temperatures haven't fluctuated among regions of the globe or between seasons and times of day. But if you average out the temperature all over the world over the course of a year, you see that temperatures have been creeping upward. In your argument you stated: "Not only have the US temperatures been flat for the last 10-15 years, but a similar pattern is happening in Canada." This is only one region of the world. I went onto this website(the one you gave to me) and I found this: http://climvis.ncdc.noaa.gov... The trend(temperature) is going up. On this link: http://climate.rutgers.edu... There is an error in this image... If this year, 2012, is not even over yet how can it be on the graph? Another error with this argument is that we are not debating snow but we are debating temperature. This has no point to even argue about. This shows that the temperature is rising. Also it came off of the website that just said it was decreasing. This website has false information because of this. http://ec.gc.ca... Dictionary definition: Global Warming: a gradual increase in the overall temperature of the earth's atmosphere generally (Generally: in most cases; usually) attributed to the greenhouse effect caused by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants This last argument also did not have a foundation. The definition did not say that global warming was caused by pollutents but it seems to be put together usually.