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The study of significant and lasting changes in the weather pattern over a period of decades to periods of millions of years ('''climate change''') has been undertaken since ancient times (around 300 BC). More intresting research however has been undertaken since the 18th/19th century, due to a availability of new instruments that allow better examination of changes in the weather pattern.
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'''The study of''' significant and lasting changes in the weather pattern over a period of decades to periods of millions of years ('''climate change''') has been undertaken since ancient times (around 300 BC). More intresting research however has been undertaken since the 18th/19th century, due to a availability of new instruments that allow better examination of changes in the weather pattern. Since this period, the rise in the average temperature of Earth's atmosphere and oceans since from the 19th to the 21st century ('''global warming''') has also been under investigation. In this article, we will specifically focus on that.
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==Overview of global warming==
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The global average air temperature near the Earth's surface rose 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the last 100 years. This event has been called '''global warming'''. The Intergovernmental [[Panel on Climate Change]] ([[IPCC]]) has concluded that "most of the observed increase in globally averaged temperatures since the mid-20th century is very likely caused due to the observed increase in anthropogenic [[greenhouse gas]]es <ref>[http://en.wikipedia.org/wiki/Global_warming#_note-grida7 Greenhouse effect]</ref>
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In this article we discuss the rise in the average temperature of Earth's atmosphere and oceans since from the 19th to the 21st century (the current global warming).
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variations in rainfall patterns. Some areas will become drier, others wetter; most will become warmer, but some may become cooler; ice caps will melt (though how much is unclear) and sea levels will rise. This is expected have devastating effects on vulnerable communities.  
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The overall effect is most accurately termed 'climate change' rather than 'global warming' as there are many changes of concern besides warming, and it also includes various local effects.
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due to human influence is accepted as scientific consensus, and includes global warming and variations in rainfall patterns. Some areas will become drier, others wetter; most will become warmer, but some may become cooler; ice caps will melt (though how much is unclear) and sea levels will rise. This is expected have devastating effects on vulnerable communities.
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The overall effect is most accurately termed 'climate change' rather than 'global warming' as there are many changes of concern besides warming, and localized effects are very varied.
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'''Global warming''' refers to the increase in the average temperature of the Earth's near-surface air and oceans in recent decades and its projected continuation. Global warming is accepted as the scientific consensus.
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The global average air temperature near the Earth's surface rose 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the last 100 years. The Intergovernmental [[Panel on Climate Change]] ([[IPCC]]) concludes, "most of the observed increase in globally averaged temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic [[greenhouse gas]] concentrations"[http://en.wikipedia.org/wiki/Global_warming#_note-grida7] via the [[greenhouse effect]].
      
Note that [[Appropedia]] is focused on solutions and has only basic and especially relevant information on climate science. See [[Wikipedia:Climate science]] as a starting point for climate science information.
 
Note that [[Appropedia]] is focused on solutions and has only basic and especially relevant information on climate science. See [[Wikipedia:Climate science]] as a starting point for climate science information.
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