By Javier
The existence of a ~ 2400-year climate cycle, discovered in 1968 by Roger Bray, is supported by abundant evidence from vegetation changes, glacier re-advances, atmospheric changes reflected in alterations in wind patterns, oceanic temperature and salinity changes, drift ice abundance, and changes in precipitation and temperature. This is established with proxy records from many parts of the world.
Posted in Attribution, Data and observations
by Judith Curry
There is an opportunity to steer the proposed red team exercise in a useful direction. The first step is to frame the problem to be addressed.
Posted in Policy, Sociology of science
by Nic Lewis
A new paper in Science Advances by Cristian Proistosescu and Peter Huybers (hereafter PH17) claims that accounting for the decline in feedback strength over time that occurs in most CMIP5 coupled global climate models (GCMs), brings observationally-based climate sensitivity estimates from historical records into line with model-derived estimates.
Posted in Sensitivity & feedbacks
by Vincent Randall
A perspective on economists’ grappling with the ‘uncertainty monster.’
Posted in Economics, Uncertainty
by Judith Curry
Last week, Scott Pruitt, EPA Administrator, stated he intended to form a ‘red team’ to debate climate science. What exactly is ‘red teaming’, and how can this be implemented in a way that is useful for climate science and for policy makers?
Posted in Policy, Sociology of science
by Larry Kummer, originally posted at the Fabius Maximus website.
Another peer-reviewed paper predicting disaster from climate change by misrepresenting and exaggerating the science. We can still learn much from it.
Posted in Climate change impacts
The National Climate Assessment must be redirected or terminated
Periodic National Assessments of the effects of climate change on the U.S. are mandated by the 1990 Global Change Research Act. The next Assessment Report is scheduled to be published in late 2018.
Posted in Policy, Sociology of science
Posted in Communication, Sociology of science
by Judith Curry
Climate Forecast Applications Network (CFAN)’s first seasonal forecast for Atlantic hurricanes is based on a breakthrough in understanding of the impact of global climate dynamics on Atlantic hurricane activity.
Posted in Hurricanes
by Judith Curry
QTIIPS stands for Quantitatively Trivial Impact + Intense Political Symbolism. – Keith Hennessey
Posted in Policy
by Javier
The Neoglacial has been a period of progressive cooling, increasing aridity, and advancing glaciers, culminating in the Little Ice Age. The main Holocene climatic cycle of ~ 2400 years delimits periods of more stable climatic conditions which were identified over a century ago. The stable periods are punctuated by abrupt changes.
Posted in Attribution, Data and observations
by Peter Davies
Scenarios to understand how load, wind, solar PV and storage interact and whether a 100% renewable grid for Texas is technically feasible.
Posted in Energy
by Judith Curry
The scary emergence of Nye’s Quadrant in dominating the public discourse on climate change.
Posted in Scientific method, Sociology of science
Posted in Attribution, Data and observations
By Planning Engineer
On April 14th, 2017 Rick Perry wrote a memo headed “STUDY EXAMINING ELECTRICITY MARKETS AND RELAIBILITY” calling for study to investigate how long term energy trends my impact the grid.
Posted in Energy
by Makarieva A.M., Gorshkov V.G., Nefiodov A.V., Chikunov A.V., Sheil D., Nobre A.D., Li B.-L.
New questions and ideas about hurricanes and their power.
Posted in Hurricanes
by Judith Curry
Pondering some thorny issues regarding science, its place in society and its relationship to politics.
Posted in Policy, Sociology of science
by Judith Curry
Put the ‘consensus’ to a test, and improve public understanding, though an open and adversarial process. – Steve Koonin
Posted in Policy, Scientific method
by Nic Lewis
Kyle Armour has a new paper out in Nature Climate Change: “Energy budget constraints on climate sensitivity in light of inconstant climate feedbacks”.
Posted in Sensitivity & feedbacks
by Judith Curry
Climate Feedback has interviewed a number of scientists regarding the recent House Hearing on climate science.
Posted in Scientific method
by Judith Curry
One needs to ask good questions about whose claims to trust and why. – Sheila Jasanoff
Posted in Politics, Sociology of science
by Judith Curry
Updated AGU Ethics Policy available for member comment. Proposed new language identifies harassment and bullying as scientific misconduct.
Posted in Ethics
by Rud Istvan
A novel hypothesis on the role of CO2 in the technological transition from hunter/gatherers to sedentary agriculture.
Posted in Climate change impacts
