Global warming is the increase in the average temperature of the Earth's near-surface air and oceans since the mid-twentieth century, and its projected continuation.
The average global air temperature near the Earth's surface increased 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the hundred years ending in 2005. The Intergovernmental Panel on Climate Change (IPCC) concludes "most of the observed increase in globally averaged temperatures since the mid-twentieth century is very likely due to the observed increase in anthropogic (man-made) greenhouse gas concentrations"via an enhanced greenhouse effectt. Natural phenomena such as solar variation combined with volcanoes probably had a small warming effect from pre-industrial times to 1950 and a small cooling effect from 1950 onward.
These basic conclusions have been endorsed by at least thirty scientific societies and academies of science including all of the national academies of science of the major industrialized countries . While individual scientists have voiced disagreement with some findings of the IPCC, the overwhelming majority of scientists working on climate change agree with the IPCC's main conclusions.
Climate model projections summarized by the IPCC indicate that average global surface temperature will likely rise a further 1.1 to 6.4 °C (2.0 to 11.5 °F) during the twenty-first century. This range of values results from the use of differing scenarios of future greenhouse gas emissions as well as models with differing climate sensitivity . Although most studies focus on the period up to 2100, warming and sea level rise are expected to continue for more than a thousand years even if greenhouse gas levels are stabilized. The delay in reaching equilibrium is a result of the large heat capacity of the oceans.
Increasing global temperature will cause sea level to rise and is expected to increase the intensity of extreme weather events and to change the amount and pattern of precipitation . Other effects of global warming include changes in agricultural yields , trade routes, glacier retreat , species extinctions and increases in the ranges of disease vectors .
Remaining scientific uncertainties include the amount of warming expected in the future, and how warming and related changes will vary from region to region around the globe. Most national governments have signed and ratified the Kyoto Protocol aimed at reducing greenhouse gas emissions, but there is ongoing political and public debate worldwide regarding what, if any, action should be taken to reduce or reverse future warming or to adapt to its expected consequences.
The average global air temperature near the Earth's surface increased 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the hundred years ending in 2005. The Intergovernmental Panel on Climate Change (IPCC) concludes "most of the observed increase in globally averaged temperatures since the mid-twentieth century is very likely due to the observed increase in anthropogic (man-made) greenhouse gas concentrations"via an enhanced greenhouse effectt. Natural phenomena such as solar variation combined with volcanoes probably had a small warming effect from pre-industrial times to 1950 and a small cooling effect from 1950 onward.
These basic conclusions have been endorsed by at least thirty scientific societies and academies of science including all of the national academies of science of the major industrialized countries . While individual scientists have voiced disagreement with some findings of the IPCC, the overwhelming majority of scientists working on climate change agree with the IPCC's main conclusions.
Climate model projections summarized by the IPCC indicate that average global surface temperature will likely rise a further 1.1 to 6.4 °C (2.0 to 11.5 °F) during the twenty-first century. This range of values results from the use of differing scenarios of future greenhouse gas emissions as well as models with differing climate sensitivity . Although most studies focus on the period up to 2100, warming and sea level rise are expected to continue for more than a thousand years even if greenhouse gas levels are stabilized. The delay in reaching equilibrium is a result of the large heat capacity of the oceans.
Increasing global temperature will cause sea level to rise and is expected to increase the intensity of extreme weather events and to change the amount and pattern of precipitation . Other effects of global warming include changes in agricultural yields , trade routes, glacier retreat , species extinctions and increases in the ranges of disease vectors .
Remaining scientific uncertainties include the amount of warming expected in the future, and how warming and related changes will vary from region to region around the globe. Most national governments have signed and ratified the Kyoto Protocol aimed at reducing greenhouse gas emissions, but there is ongoing political and public debate worldwide regarding what, if any, action should be taken to reduce or reverse future warming or to adapt to its expected consequences.
1 comment:
Blah, blah, blah... Why is it that supporters of the Global Warming Hoax never add anything new to the debate or even acknowledge the latest developments in the on going saga of the Earth's climate.
Really exciting things are happening right now, such as the fact that all of the proported Global Warming of the 20th century has been wiped out in the last year, or that the Argos Project have confirmed that the Oceans are actually cooling.
This June we have had snows significant enough to warrant calling out snow ploughs in Washington, Idaho, Montana and Wyoming. This winter was one of the coldest in memory in the mid west. It snowed in Baghdad for crying out loud! Not to mention the Greece, Israel, Syria and Saudi Arabia had significant snowfalls and record breaking cold too, or the hundreds of thousands of Chinese that were stranded by their record breaking snow fall.
In the Southern Hemisphere, Buenos Aires, Johannesburg and Melbourne all experienced unusual snowfall, not to mention the fact that Antarctica's ice pack failed to melt back to its size, or that the entire Southern Ocean is unusually cold this year.
Fact is the evidence for Global Warming, not just the exceeding weak case for manmade Global Warming but Global Warming in general is failing. After all, there has been a cooling trend since 1998 while CO2 continues to rise, and there has been no major volcanic activity to speak of.
Makes me wonder if all the believers in Global Warming are not simply Robots using copy and paste to continue to reprint the same old tripe without considering new evidence which completely shatters their case.
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