Global Warming Is The Environmental And Social Changes Caused By Emissions Of Greenhouse Gases

1735 WordsAug 30, 20147 Pages
Overview Global warming is the environmental and social changes caused by emissions of greenhouse gases. Human activities have been the primary cause of this significant change, resulting with extreme weather conditions, increasing sea levels, and climate changes. In this paper I will compare and contrast natural versus anthropogenic climate changes of global warming, mitigation strategies, mitigation effectiveness, policy implications, costs, and address some policy changes to help stabilize global climate. Natural Climate change The Earth has been experiencing a considerable amount of climate change for the last several decades. Natural factors that contribute to the climate system consist of: solar output, volcanic activity and earth’s orbit around the sun. The two factors relevant on timescales of contemporary climate exist in volcanic activity and changes in solar radiation. The earth’s energy balance primarily influences the amount of incoming energy from volcanic eruptions, which have a relatively short-term effect on climate. Changes in solar output have contributed greatly to climate trends over the past century. The effect of greenhouse gases in the atmosphere has been at least ten times that of changes in the Sun’s output and the ocean covers more than 70 percent of the earth’s surface, receiving twice the amount of earth’s radiation. Although the sun is the engine that drives all the weather, oceans and atmosphere control the sun 's energy along certain

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