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Global Warming and Climate Change Policy: A Survey of Selected Countries. Edition No. 1

VDM Publishing House, January 2010, Pages: 244

Global warming is an average increase in the temperature of the atmosphere near the Earth's surface and in the troposphere, which can contribute to changes in global climate patterns. Global warming can occur from a variety of causes, both natural and human induced. In common usage, "global warming" often refers to the warming that can occur as a result of increased emissions of greenhouse gases from human activities. Climate change refers to any significant change in measures of climate (such as temperature, precipitation, or wind) lasting for an extended period (decades or longer). Climate change may result from: - natural factors, such as changes in the sun's intensity or slow changes in the Earth's orbit around the sun, - natural processes within the climate system (e.g. changes in ocean circulation), - human activities that change the atmosphere's composition (e.g. through burning fossil fuels) and the land surface (e.g. deforestation, reforestation, urbanization, desertification, etc.)

Hedayat, Omidvar.
He is head of Communication Affairs with Science and Research Centers, Research and Technology Department with the National Iranian Gas Company. He is a member of IGU Marketing Committee. Letter of Commendation As the Exemplary Research Expert Received From the Deputy Petroleum Minister and Managing Director of NIGC 2008.