Climate F-Words

by Roy W. Spencer, Ph. D.

[Ed.  Dr. Roy Spencer wrote a post (22 March 2018) disagreeing with Lord Monckton’s theory that climate scientists have over-estimated feedback by a factor of 2, because they have been using the feedback  equations incorrectly.  Dr. Spencer agrees with the factor of 2 error, but he disagrees with the reason given by Lord Monckton.  In response, Lord Monckton has countered Dr. Spencer’s argument with a post of his own on Spencer’s blog.  The original Spencer post can be found here with Lord Monckton’s counter argument  here.]

recent article by Lord Christopher Monckton over at WUWT argues that there has been an “elementary error of physics” that has led to climate sensitivity being overestimated by about a factor of 2.

I agree with the conclusion but not the reason why. It is already known from the work of Otto et ahttp://www.drroyspencer.com/wp-content/uploads/Trump-forcing-and-feedback-550x309.jpgl. (2013), Lewis & Curry (2015) and others that the climate system (including the deep oceans) has warmed by an amount that suggests a climate sensitivity only about half of what the models produce (AR5 models warm by an average of 3.4 deg. C in response to a doubling of CO2).

But the potential reasons why are many, and as far as I can tell not dependent upon Christopher’s arguments. For those who don’t know, Lord Monckton is a pretty talented mathematician. However, like others I have encountered over the years, I believe he errs in his assumptions about how the climate research community uses — and does or does not depend upon — the concept of feedback in climate modeling. Continue reading “Climate F-Words”

Weather, not human-caused CO2-fueled global warming, is responsible for 2017’s damaging wildfire history in California

By Robert W. Endlich

The year 2017 featured incredibly intense, damaging wildfires in California. First the Wine Country fires of October, and later, in December, the massive Thomas Fire, each destroyed hundreds of homes.  The latter, in many of the affluent suburbs and enclaves northwest of Los Angeles and Hollywood.  The Thomas Fire is the largest in modern California history with over 1000 structures destroyed.

California’s Governor Jerry Brown blamed human-caused CO2-fueled

Satellite Photo of Thomas Fire, California (Wikipedia, 2017)

global warming for this conflagration during a visit to Ventura County on 9 December, saying the drought conditions were the “new normal.” To quote the governor, “There have (historically) been very long droughts in California and we are getting some of those returning very bad, and we’re going to get them returning more often.”

 

But, Governor Brown is just wrong about this, as an examination of some meteorological and climate data shows:

Continue reading “Weather, not human-caused CO2-fueled global warming, is responsible for 2017’s damaging wildfire history in California”