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Anthony Watt’s site WUWT posts some new revealing claims regarding man-made CO2 effects on planetary temperature.

The following is an extract:

PROFESSOR MURRY SALBY

Chair of Climate, Macquarie University

Atmospheric Science, Climate Change and Carbon – Some Facts

Carbon dioxide is emitted by human activities as well as a host of natural processes. The satellite record, in concert with instrumental observations, is now long enough to have collected a population of climate perturbations, wherein the Earth-atmosphere system was disturbed from equilibrium. Introduced naturally, those perturbations reveal that net global emission of CO2 (combined from all sources, human and natural) is controlled by properties of the general circulation – properties internal to the climate system that regulate emission from natural sources. The strong dependence on internal properties indicates that emission of CO2 from natural sources, which accounts for 96 per cent of its overall emission, plays a major role in observed changes of CO2. Independent of human emission, this contribution to atmospheric carbon dioxide is only marginally predictable and not controllable.

Professor Murry Salby holds the Climate Chair at Macquarie University and has had a  lengthy career as a world-recognised researcher and academic in the field of Atmospheric Physics. He has held positions at leading research institutions, including the US National Center for Atmospheric Research, Princeton University, and the University of Colorado, with invited professorships at universities in Europe and Asia. At Macquarie University, Professor Salby uses satellite data and supercomputing to explore issues surrounding changes of global climate and climate variability over Australia. Professor Salby is the author of Fundamentals of Atmospheric Physics, and Physics of the Atmosphere and Climate due out in 2011. Professor Salby’s latest research makes a timely and highly-relevant contribution to the current discourse on climate.

Salby’s  talk was given in June at the International Union of Geodesy and Geophysic meeting in Melbourne Australia.   He indicates that a  journal paper is in press, with an expectation of publication a few months out.  He also hints that some of the results will be in his book Physics of the Atmosphere and Climate which is supposed to be available Sept 30th.

The podcast for his talk“Global Emission of Carbon Dioxide: The Contribution from Natural Sources” is here (MP3 audio format). The podcast length is an hour, split between his formal presentation ~ 30 minutes, and Q&A  for the remaining time.

Comments by Anthony, Andrew Bolt and Jo Nova are included and deal with Professor Salby’s evidence that atmospheric CO2 levels are more likely to be a consequence of temperature than the other way around.

Comments from Dr Judith Curry and Dr Roy Spenser also are mentioned.

All in all, this particular issue is looking to be quite significant.

Apparently Prof. Salby was not impressed by the suggestion that the climate change science issues were ‘settled’.

Read on here.

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