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Sunday, January 14, 2018

+John Christy Fails to Show that Climate Models Exaggerate CO2-induced Warming

The outline for this post is as follows:
  1. Summary and Objections to the Myth
  2. Elaboration on the Myth
  3. Elaborations on the Objections
  4. Posts Providing Further Information and Analysis
  5. References
If you want the "tl;dr" for this post, then I suggest reading sections 1 and 2. Alternatively, if you are familiar with John Christy's claims on tropospheric temperature trends, then simply skip ahead to section 2.

Each numbered point in section 1 corresponds with a numbered portion of section 3. So there is no need to read this entire post; instead, you can look at section 1 to see which numbered point you find interesting, and then go to the corresponding numbered portion in section 3 for further details.

This is the "+References" version of this post, which means that this post contains my full list of references and citations. If you would like an abbreviated and easier to read version, then please go to the "main version" of this post.

References are cited as follows: "[#]", with "#" corresponding to the reference number given in the References section at the end of this post.




1. Summary and Objections to the Myth



Climate scientists John Christy and Richard McNider published a paper examining warming in the lower atmosphere. They use this analysis to argue that climate models exaggerate [1; 9] a parameter known as climate sensitivity [2 - 7; 21]; this implies that the models over-estimate warming caused by carbon dioxide (CO2) [1]. Christy+McNider's claim that models over-estimate climate sensitivity is the myth I focus on in this blogpost.

John Christy Fails to Show that Climate Models Exaggerate CO2-induced Warming

The outline for this post is as follows:
  1. Summary and Objections to the Myth
  2. Elaboration on the Myth
  3. Elaborations on the Objections
  4. Posts Providing Further Information and Analysis
  5. References
If you want the "tl;dr" for this post, then I suggest reading sections 1 and 2. Alternatively, if you are familiar with John Christy's claims on tropospheric temperature trends, then simply skip ahead to section 2.

Each numbered point in section 1 corresponds with a numbered portion of section 3. So there is no need to read this entire post; instead, you can look at section 1 to see which numbered point you find interesting, and then go to the corresponding numbered portion in section 3 for further details.

This is the "main version" of this post, which means that this post lacks most of my references and citations. If you would like a more comprehensive version with all the references and citations, then please go to the "+References" version of this post.

References are cited as follows: "[#]", with "#" corresponding to the reference number given in the References section at the end of this post.




1. Summary and Objections to the Myth



Climate scientists John Christy and Richard McNider published a paper examining warming in the lower atmosphere. They use this analysis to argue that climate models exaggerate a parameter known as climate sensitivity; this implies that the models over-estimate warming caused by carbon dioxide (CO2). Christy+McNider's claim that models over-estimate climate sensitivity is the myth I focus on in this blogpost.