New excuse #56 for the ‘pause’ in global warming: Satellites underestimate cooling from volcanic aerosols – Published in Geophysical Research Letters
New excuse #56 for the “pause” in global warming: Satellites underestimate cooling from volcanic aerosols http://hockeyschtick.blogspot.com/2014/10/new-excuse-56-for-pause-in-global.html A paper published today in Geophysical Research Letters states, “Understanding the cooling effect of recent volcanoes is of particular interest in the context of the post-2000 slowing of the rate of global warming” and finds “recent volcanic events are […]
New paper finds clouds have a large net cooling effect on climate – Published in Atmospheric Research
New paper finds global dimming & brightening were due to natural changes in cloud cover, not man-made aerosols – Published in the Journal of Geophysical Research Atmospheres
New paper finds global dimming & brightening were due to natural changes in cloud cover, not man-made aerosols http://hockeyschtick.blogspot.com/2014/09/new-paper-finds-global-dimming.html A new paper published in the Journal of Geophysical Research Atmospheres find that “changes in cloud cover rather than anthropogenic aerosols emissions played the major role in determining solar dimming and brightening during the last half […]
Study: Man-Made Aerosol Emissions Have Helped Cool Planet
New paper shows IPCC underestimates global cooling from man-made aerosols/clouds by factor of 27 times – Published in Science
New paper shows IPCC underestimates global cooling from man-made aerosols/clouds by factor of 27 times http://hockeyschtick.blogspot.com/2014/06/new-paper-shows-ipcc-underestimates.html According to a new paper published in Science, the global cooling effect of clouds nucleated by man-made aerosols since the beginning of the industrial revolution is approximately 15 watts per square meter, which is about 27 times more cooling […]
New paper finds climate models simulate or predict only about 6% of altocumulus clouds – Published in Atmospheric Research
New paper finds climate models simulate or predict only about 6% of altocumulus clouds http://hockeyschtick.blogspot.com/2014/06/new-paper-finds-climate-models-only.html A paper published today in Atmospheric Research finds “Altocumulus clouds are important, yet climate models have difficulties in simulating and predicting these clouds” and “Approximately 93.6% of Altocumulus clouds cannot be resolved by climate models with a grid resolution of […]
Satellite data shows CO2 does not control Earth’s radiative balance or climate
Satellite data shows CO2 does not control Earth’s radiative balance or climate http://hockeyschtick.blogspot.com/2014/04/satellite-data-shows-co2-does-not.html Dr. Roy Spencer has an interesting post today analyzing several satellite datasets, which suggest “some portion of recent warming was simply due to a natural decrease in cloud cover.”Dr. Spencer also finds an independent method of determining Earth’s radiative fluxes [fig 6 […]
Settled Science: New paper finds effect of man on climate is ‘highly uncertain’ – Published in Science
One of several reasons for this high uncertainty is the complexity of determining the cooling effects of aerosols, which reflect sunlight back to space, and can also seed cloud formation. According to the authors, “Aerosols counteract part of the warming effects of greenhouse gases, mostly by increasing the amount of sunlight reflected back to space. However, […]
Prediction Failure: IPCC’s Climate Models Remain Weak At Arctic Cloud, Sea Ice & Albedo Conditions, Say Researchers
New paper demonstrates inability to model clouds – Published in Geophysical Research Letters
A new paper published in Geophysical Research Letters demonstrates the pathetic state of climate modelling of clouds. According to the paper, the only way for the modellers to reproduce cloud effects on observed temperatures was to use microphysical properties of clouds that were the most divergent from satellite observations. In other words, to “tune” the […]