Acefalia

Páginas: 4 (938 palabras) Publicado: 27 de mayo de 2012
CLIMATE PATTERNS

is a significant and lasting change in the statistical distribution of weather patterns over periods ranging from decades to millions of years. It may be a change in averageweather conditions, or in the distribution of weather around the average conditions, more or fewer extreme weather events. Climate change is caused by factors that include oceanic processes , variationsin solar radiation received by Earth, plate tectonics and volcanic eruptions, and human induced alterations of the natural world; these latter effects are currently causing global warming, and "climatechange" is often used to describe human specific impacts.
a climate record that spans the geologic past. More recent data are provided by the instrumental record. Physically-based generalcirculation models are often used in theoretical approaches to match past climate data, make future projections, and link causes and effects in climate change

CAUSES OF THE CLIMATE PATTERNS:

On thebroadest scale, the rate at which energy is received from the sun and the rate at which it is lost to space determine the equilibrium temperature and climate of Earth. This energy is distributed around theglobe by winds, ocean currents, and other mechanisms to affect the climates of different regions.
Factors that can shape climate are called forcing mechanisms. These include processes such asvariations in solar radiation, deviations in the Earth’s, changes in greenhouse gas concentrations. There are a variety of climate change feedbacks that can either amplify or diminish the initial forcing.Some parts of the climate system, such as the oceans and ice caps, respond slowly in reaction to climate forcing, while others respond more quickly.
Whether the initial forcing mechanism is internal orexternal, the response of the climate system might be fast, slow or a combination, Therefore, the climate system can respond abruptly, but the full response to forcing mechanisms might not be fully...
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