Citizens Guide Global Warming and Climate Change

This page contains references describing the skeptical take on the science of climate change.  Pragmatic Environmentalist of NY articles on the difference between weather and climate are available here and articles on global warming are available here.

Dr. Roy Spencer: Near the end of the Trump Administration a series of short, easily understandable brochures that support the general view that there is no climate crisis or climate emergency, and pointing out the widespread misinformation being promoted by alarmists through the media were prepared.  The brochures are no longer available where it originally posted but I made copies for later use.

• Introduction (Dr. David Legates)
• The Sun Climate Connection (Drs. Michael Connolly, Ronan Connolly, Willie Soon)
• Systematic Problems in the Four National Assessments of Climate Change Impacts on the US (Dr. Patrick Michaels)
• Record Temperatures in the United States (Dr. John Christy)
• Radiation Transfer (Dr. William Happer)
• Is There a Climate Emergency (Dr. Ross McKitrick)
• Hurricanes and Climate Change (Dr. Ryan Maue)
• Climate, Climate Change, and the General Circulation (Dr. Anthony Lupo)
• Can Computer Models Predict Climate (Dr. Christopher Essex)
• The Faith-Based Nature of Human-Caused Global Warming (Dr. Roy Spencer)

Other References

• Climate at a Glance
• A sense of proportion on the “existential” climate threat.  This post responds to the greatest threat of our time narrative.
• The Profound Junk Science of Climate
• Current extreme weather trend swindle
• The late Dr. Patrick Michaels on global warming.  The section on the models is particularly good.
• Climate crisis is hype not reality
• Judith Curry’s latest presentation on climate uncertainty and risk

Kip Hansen does a nice job explining why he is a skeptic in two articles. In the first part, he describes the temperature and explains that the temperatures have been increasing since 1650 – 1700.  That is important because that is 150 to 200 years before the start of increased GHG emissions associated with the industrial revolution.  He explains that he agrees that global warming is happening and  human activity causes [some of] it.] but he does not agree with the assertion that CO₂ and other anthropogenic emissions  are “the dominant cause of the observed warming since the mid-20th century.”  He says that he disagrees with the attribution and the effect size. In the second article Hansen provides his reasoning for this position.  He shows that sea-level rise that is also attributed to anthropogenic warming follows the temperature record.  It has been rising since 1700 when it bottomed out at the end of the Little Ice Age.  He also presents data on snow and ice cover that behave similarly.  He concludes that:

The IPCC and the Climate Science community have, so far, failed to rule out the CO₂ driven global warming hypothesis —  nothing more.    They have, however, shown in their historical reconstructions that the main bodies of evidence their hypothesis relies on — surface air temperature, sea level rise, snow and ice cover —  all started changing long before CO₂ concentrations could possibly had any appreciable effect.