Forcings

Callah Racine
 * __Forcings __** Emerson Parsell

A Forcing is somthing that forces the climate to change abrubtly. The Earth's climate system can be thought of as a machine that converts radiation from the sun into the heat and motion of the lower atmosphere and the ocean. An Example of forcings by natural process would be a volcanic eruption because its ash is realesed into the atmosphere, blocking out the sun and affecting the climate for several years. Another natural example would be changes to the suns radiation which would directly affect the atmosphere. Emissions of greenhouse gases is also a natural occurance, but more so man-made pollution that over time alters the global energy balance and changes the composition of the atmosphere, which in turn changes the climate.

Global warming is one of the biggest enviromnmental problems we are dealing with today. Greenhouse gasses that are being trapped in the atmosphere has been, and will further **force** the climate to make drastic changes. These changes include a warmer climate overall for the planet, in turn melting ice in the arctic and making the oceans bigger. Eleven of the warmest years since 1980 have occured in the last twelve years.Just in the past few years, the severity and occurance rate of natural disasters has increased. Hurricanes, typhoons and cyclones have become much more frequent in the tropics.



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