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 [...]
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 [...]
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 [...]
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 [...]
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 [...]
In the last post, I discussed the problems comparing modern instrumental global or hemispheric average temperatures to the past. Ocean temperature coverage was sparse and of poor quality prior to 2005. Prior to 1950, land (29% of the surface) measurements were also sparse and of poor quality. Only proxy temperatures are available before thermometers were [...]
The concepts and data used to make temperature and climate reconstructions, or estimates, are constantly evolving. Currently, there are over 100,000 global weather stations on land and over 4,500 Argo floats and weather buoys at sea. This is in addition to regular measurements by satellites and ships at sea. The measurement locations are known [...]
This is a re-post from the CO2 Coalition, here. Re-posted with permission. [Ed. Note] The number of opinion pieces disguised as “Fact Checks,” and the use of them to censor one side of scientific debates has reached epidemic proportions. We need to fight back against this abhorrent trend. Science is all about debate. The debate [...]
The left-wing Scientific American published a so-called review of Steven Koonin’s new book, Unsettled, by a number of prominent left-wing scientists. The article is headed by the mandatory sunset photo of steam coming out of powerplant chimneys. The article is not really a review, their substantive claims are very weak, it is really a hit piece to trash Koonin [...]
I’ve written about the far left-wing Union of Concerned Scientists (UCS) and their anti-democratic attempts to suppress free-speech and free-thought before (see here). There are more details about their chicanery in my latest book: Politics and Climate Science: A History. ExxonMobil totally humiliated them and their gang when they tried to accuse the company of [...]
