About Andy May

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So far Andy May has created 40 blog entries.

The greenhouse effect, summary of the Happer and Van Wijngaarden paper

The phrase “greenhouse effect,” often abbreviated as “GHE,” is very ambiguous. It applies to Earth’s surface temperature, and has never been observed or measured, only modeled. To make matters worse, it has numerous possible components, and the relative contributions of the possible components are unknown. Basic physics suggests that Earth’s surface is warmer than [...]

By |2021-09-22T12:04:18+02:0022 September 2021|News, USA|Comments Off on The greenhouse effect, summary of the Happer and Van Wijngaarden paper

False and misleading “fact check” about Connolly, et al., 2021

By Andy May Dr. Ronan Connolly and his co-authors respond to obvious false claims, in a supposed “fact check” about their latest paper on how solar variability may be affecting the climate. We applaud Dr. Ronan Connolly, Dr. Willie Soon, and Dr. Michael Connolly for rapidly and publicly calling out this fraudulent fact check. Misinformation [...]

By |2021-09-11T12:37:25+02:0011 September 2021|News, USA|Comments Off on False and misleading “fact check” about Connolly, et al., 2021

Nature promotes frivolous lawsuits

By Andy May A Dutch joke*: “The Judge asks an attorney pleading his case: ‘Am I ever to hear the truth?’ The attorney responds: ‘No, my Lord, only the evidence.'” It is safe to say that no evidence exists that man-made climate change has harmed anyone. Further man-made climate or climate change [...]

By |2021-09-06T11:16:42+02:004 September 2021|News, USA|Comments Off on Nature promotes frivolous lawsuits

The Paleocene-Eocene Thermal Maximum or PETM

The PETM or Paleocene-Eocene Thermal Maximum was a warm period that began between 56.3 and 55.9 Ma (million years ago). The IPCC AR6 report (actually a draft, not a final edited report), released to the public on August 9, 2021, suggests that this warm period is similar to what is happening today and they [...]

By |2021-08-18T17:16:38+02:0018 August 2021|News, USA|Comments Off on The Paleocene-Eocene Thermal Maximum or PETM

Can we predict long-term solar variability?

By Andy May This post is a result of an online conversation with Dr. Leif Svalgaard, a research physicist at Stanford University. Leif knows a great deal about the Sun and solar variability and can explain it clearly. Our disagreement is over whether long-term solar variations could be large enough to affect Earth’s climate [...]

By |2021-07-24T14:06:41+02:0024 July 2021|News, USA|Comments Off on Can we predict long-term solar variability?

Sea Level Model Fail

From a post by Arnout Jaspers at clintel.org. In 2016, a headline grabbing study said that the Antarctic ice sheet is much more unstable than [previously] estimated.  As a consequence, projected sea level rise in 2100 would double. Computer modelers from Deltares and KNMI scrambled back to their drawing boards to upgrade their prognoses [...]

By |2021-07-22T18:21:44+02:0022 July 2021|News, USA|Comments Off on Sea Level Model Fail

Climate Sensitivity to CO2, what do we know? Part 2.

In Part 1, we introduced the concepts of climate sensitivity to CO2, often called ECS or TCR. The IPCC prefers a TCR of about 1.8°C/2xCO2 (IPCC, 2013, p. 818). TCR is the short-term, century scale, response of surface temperature to a doubling of CO2, we abbreviate the units as “°C/2xCO2.” In these posts we review lower [...]

By |2021-07-08T14:43:40+02:008 July 2021|News, USA|Comments Off on Climate Sensitivity to CO2, what do we know? Part 2.

Climate Sensitivity to CO2, what do we know? Part 1.

The IPCC claims, in their AR5 report, that ECS, the long-term temperature change due to doubling the atmospheric CO2 concentration or the “Equilibrium Climate Sensitivity,” likely lies between 1.5° and 4.5°C, and they provide no best estimate (IPCC, 2013, p. 85). But their average model computed ECS is 3.2°C/2xCO2. Here, “°C/2xCO2” is the temperature change [...]

By |2021-07-08T11:23:20+02:005 July 2021|News, USA|Comments Off on Climate Sensitivity to CO2, what do we know? Part 1.

Greenland Ice Core CO2 during the past 1,000 years

Guest Post by Renee Hannon Introduction This post compares CO2 ice core measurements from Greenland to those from Antarctica over the last millennium. Paleoclimate studies typically use only Antarctic ice cores to evaluate past CO2 fluctuations. This is because the entire Greenland CO2 datasets were deemed unreliable due to chemical reactions with impurities in the ice and [...]

By |2021-07-02T11:22:08+02:002 July 2021|Book review, News, USA|Comments Off on Greenland Ice Core CO2 during the past 1,000 years

Science, Philosophy and Politics

Greg Weiner has written a great essay in Law & Liberty, entitled: “Why We cannot Just ‘Follow the Science.‘” His point is that scientists and science are important, but relying only on “The Science” for decision making is both dangerous and foolish. Science is a methodology for proposing well-developed answers to questions about natural [...]

By |2021-06-29T12:41:53+02:0029 June 2021|News, USA|Comments Off on Science, Philosophy and Politics