A Few Thoughts on the Fourth National Climate Assessment (NCA4)

Guest post by David Middleton The current draft of the report can be found here: Fourth National Climate Assessment (NCA4), Fifth-Order Draft (5OD)  After a cursory review of the document, a few items are worth noting. Representative Concentration Pathways (RCPs) A third difference between the RCPs and previous scenarios is that while none of the SRES…

Advertisements

Weekly Climate and Energy News Roundup #280

The Week That Was: 2017-08-05 (August 5, 2017) Brought to You by SEPP (www.SEPP.org) The Science and Environmental Policy Project ################################################### Quote of the Week. “The important thing is not to stop questioning. Curiosity has its own reason for existing. One cannot help but be in awe when he contemplates the mysteries of eternity, of…

Weekly Climate and Energy News Roundup #277

The Week That Was: 2017-07-15 (July 15, 2017) Brought to You by SEPP (www.SEPP.org) The Science and Environmental Policy Project THIS WEEK: By Ken Haapala, President Models v. Atmospheric Temperatures: Roy Spencer has further comments regarding the recalculated atmospheric temperatures recently produced by Mears and Wentz, who are principals in Remote Sensing Systems (RSS), competitors with…

Talking Truth to Climate Consensus

By Rud Istvan A sound bite summary* The climate consensus now has two derogation levels for those who disagree. Climate ‘contrarians’ like Bjørn Lomborg disagree about mitigation policies. Climate ‘deniers’ like Judith Curry disagree about the underlying climatology. The consensus does not any want any disagreement, since their science is ‘settled’ and solutions ‘clear’. They…

Why Climate Models Run Hot

by Rud Istvan,   EPA administrator Pruitt wants to “Red Team” the catastrophic anthropogenic global warming (CAGW) consensus best reflected in the IPCC assessment reports (AR). At its core, CAGW rests on just three propositions: 1. CO2 is a ‘greenhouse’ gas retarding radiative cooling. This should not be in serious dispute since Tyndall experimentally proved…

Chylek Imitates Ouroboros

Guest Post by Willis Eschenbach Bob Tisdale has a detailed post on the new 2014 paper entitled “The Atlantic Multidecadal Oscillation as a dominant factor of oceanic influence on climate” by Chylek et al. Nic Lewis also did a good analysis of the paper, see the Notes below for the links. I have a different…

Climate models outperformed by random walks

First, a bit of a primer. Wikipedia describes a random walk is a mathematical formalisation of a trajectory that consists of taking successive random steps. For example, the path traced by a molecule as it travels in a liquid or a gas, the search path of a foraging animal, the price of a fluctuating stock…