Radiative Forcing, Radiative Feedbacks and Radiative Imbalance – The 2013 WG1 IPCC Report Failed to Properly Report on this Issue

Guest essay by Roger A. Pielke Sr. Main Points 1. The difference in ocean heat content at two different time periods provides the global average radiative imbalance over that time [within the uncertainty of the ocean heat measurements] 2. This global average radiative imbalance is equal to the sum of the global average radiative forcings…

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FROM SCIENCE…TO ART…TO HYPOTHETICALS

The new RCPs are not projections, probabilities, prophecies or pathways – they might possibly be potentialities. Guest essay by Barry Brill The IPCC begins with science: “In sum, a strategy must recognise what is possible. In climate research and modelling, we should recognise that we are dealing with a coupled non-linear chaotic system, and therefore…

Updated climate sensitivity estimates using aerosol-adjusted forcings and various ocean heat uptake estimates

Guest essay by Nic Lewis The Otto et al. paper has received a great deal of attention in recent days. While the paper’s estimate of transient climate response was low, the equilibrium/effective climate sensitivity figure was actually slightly higher than that in some other recent studies based on instrumental observations. Here, Nic Lewis notes that…

Volcanoes: Active, Inactive, and Retroactive

Guest Post by Willis Eschenbach Anthony put up a post titled “Why the new Otto et al climate sensitivity paper is important – it’s a sea change for some IPCC authors” The paper in question is “Energy budget constraints on climate response” (free registration required), supplementary online information (SOI) here, by Otto et alia, sixteen…

Dispelling myths about global warming

CO2 did not drive the rapid warming of the 20th century. Story submitted by Stan Robertson The difference between a good idea and a bad idea is often a quantitative matter. For example, many people would think it a good idea to replace internal combustion engines with electric motors. But if the intent is to…