by Mike Smith
For a decade, the weathercaster and broadcast meteorology communities have been subject of a focused campaign to force them to cover global warming in a manner acceptable to the American Meteorological Society, the American Geophysical Union and other advocacy groups.
Posted in Sociology of science
by Javier
In Part A, we established the existence of a ~ 2400-year climate cycle, discovered in 1968 by Roger Bray. This climate cycle correlates in period and phase with a ~ 2400-year cycle in the production of cosmogenic isotopes, that corresponds with clusters of solar grand minima at times of abrupt cooling and climate deterioration. The relationship between solar activity and cosmogenic isotope production during the past centuries confirms the ~ 2400-year solar cycle as the origin of the climate cycle.
Posted in Data and observations
by Judith Curry
The climate change debate has entered what we might call the “Campfire Phase”, in which the goal is to tell the scariest story. – Oren Cass (twitter)
Posted in Communication, Sociology of science
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
