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About Global Warming

Roy Spencer

Roy Spencer, Ph.D. in meteorology, Principal Research Scientist at the University of Alabama. “Global warming” refers to the global-average temperature increase that has been observed over the last one hundred years or more. Because small, chaotic fluctuations in atmospheric and oceanic circulation systems can cause small changes in global average cloudiness, this is all that is necessary to cause climate change. Climate change — it happens, with or without our help.