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Global Warming

April 11, 2011

Global warming is the increase in the average temperature of Earth’s near-surface air and oceans since the mid-20th century and its projected continuation. According to the 2007 Fourth Assessment Report by the Intergovernmental Panel on Climate Change (IPCC), global surface temperature increased by 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the 20th century. Most of the observed temperature increase since the middle of the 20th century has been caused by increasing concentrations of greenhouse gases, which result from human activities such as the burning offossil fuel and deforestation.

Climate model projections summarized in the latest IPCC report indicate that the global surface temperature is likely to rise a further 1.1 to 6.4 °C (2.0 to 11.5 °F) during the 21st century. The uncertainty in this estimate arises from the use of models with differing sensitivity to greenhouse gas concentrations and the use of differing estimates of future greenhouse gas emissions. An increase in global temperature will cause sea levels to rise and will change the amount and pattern of precipitation, probably including expansion of subtropical deserts. Warming is expected to bestrongest in the Arctic and would be associated with continuing retreat of glaciers, permafrost and sea ice. Other likely effects include more frequent and intense extreme weather events, species extinctions, and changes in agricultural yields. Warming and related changes will vary from region to region around the globe, though the nature of these regional changes is uncertain. As a result of contemporary increases in atmospheric carbon dioxide, the oceans have become more acidic, a result that is predicted to continue.

The scientific consensus is that anthropogenic global warming is occurring. Nevertheless, skepticism amongst the wider public remains. The Kyoto Protocol is aimed at stabilizing greenhouse gas concentration to prevent a “dangerous anthropogenic interference”. As of November 2009, 187 states had signed and ratified the protocol.Proposed responses to global warming include mitigation to reduce emissions, adaptation to the effects of global warming, and geoengineering to remove greenhouse gases from the atmosphere.

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From → Studies

4 Comments
  1. Nitant Vaidya permalink

    Hey. Just read your article. It seems like you havent read any other theories to explain what is happening. Watch this documentary called “The Global Warming Swindle”. Very thought provoking. It seems Global warming is a false concept made popular by people and exploited for political benefit.

  2. Nitant Vaidya permalink

    Hey. Just read your article. Watch this documentary called “The Global Warming Swindle”. Very thought provoking. It seems Global warming is a false concept made popular by people and exploited for political benefit.

  3. Nitant Vaidya permalink

    The deal is that there is not clinching scientific evidence that this temperature rise is due to human activity, moreover temperatures have been known to rise and fall over periods of time.

  4. Nitant Vaidya permalink

    Check out http://en.wikipedia.org/wiki/The_Great_Global_Warming_Swindle

    Call me for details 🙂

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