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from RealClimate (beginners' resources)

[Do browse and observe. While some of the work here may be perfectly valid scientifically, not all is trustworthy, because it is all overlighted by a dogmatic belief in Anthropogenic Global Warming, "proved" by selection and omission of evidence. The courtesy towards skeptics and doubters can often be seen to fall short; and one does not even see here the huge number of perfectly reasonable scientific posts that have been censored, for no other reason than that they seriously challenge the AGW dogma - GWT]

For complete beginners:

NCAR: Weather and climate basics
Oxford University: The basics of climate prediction
Pew Center: Global Warming basics
Wikipedia: Global Warming
NASA: Global Warming update
National Academy of Science: Understanding and Responding to Climate Change
Encyclopedia of Earth: Climate Change Collection
Global Warming FAQ (Tom Rees)

Those with some knowledge:

The IPCC AR4 Frequently Asked Questions (here) is an excellent start. That covers:

  • What Factors Determine Earth's Climate?
  • What is the Relationship between Climate Change and Weather?
  • What is the Greenhouse Effect?
  • How do Human Activities Contribute to Climate Change and How do They Compare with Natural Influences?
  • How are Temperatures on Earth Changing?
  • How is Precipitation Changing?
  • Has there been a Change in Extreme Events like Heat Waves, Droughts, Floods and Hurricanes?
  • Is the Amount of Snow and Ice on the Earth Decreasing?
  • Is Sea Level Rising?
  • What Caused the Ice Ages and Other Important Climate Changes Before the Industrial Era?
  • Is the Current Climate Change Unusual Compared to Earlier Changes in Earth's History?
  • Are the Increases in Atmospheric Carbon Dioxide and Other Greenhouse Gases During the Industrial Era Caused by Human Activities?
  • How Reliable Are the Models Used to Make Projections of Future Climate Change?
  • Can Individual Extreme Events be Explained by Greenhouse Warming?
  • Can the Warming of the 20th Century be Explained by Natural Variability?
  • Are Extreme Events, Like Heat Waves, Droughts or Floods, Expected to Change as the Earth's Climate Changes?
  • How Likely are Major or Abrupt Climate Changes, such as Loss of Ice Sheets or Changes in Global Ocean Circulation?
  • If Emissions of Greenhouse Gases are Reduced, How Quickly do Their Concentrations in the Atmosphere Decrease?
  • Do Projected Changes in Climate Vary from Region to Region?

RealClimate: GWT's copy of RC index including all answers to skeptics (or "contrarians" as RC call skeptics)

Informed, but in need of more detail:

Informed, but seeking serious discussion of common contrarian talking points:

All of the below links have indexed debunks of most of the common points of confusion:

 

 

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