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New Study: Water Vapour a Major Cause of Warming and Cooling

American researchers have discovered that the amount of water high in the atmosphere is far more influential on world temperatures than previously thought.
The study, published in the journal Science, says a 10 per cent drop in humidity 10 miles above the Earth’s surface explains why global temperatures have been stable since the start of the [...]

Airborne Fraction of Human CO2 Emissions Constant for Past 40 Years

New data show that the balance between the airborne and the absorbed fraction of carbon dioxide has stayed approximately constant since 1850, despite emissions of carbon dioxide having risen from about 2 billion tons a year in 1850 to 35 billion tons a year now.
This suggests that terrestrial ecosystems and the oceans have a much [...]

Climate Models Really Don’t Know Clouds At All

The first reliable analysis of cloud behavior over past decades suggests—but falls short of proving—that clouds are strongly amplifying global warming. If that’s true, then almost all climate models have got it wrong. On page 460, climate researchers consider the two best, long-term records of cloud behavior over a rectangle of ocean that nearly spans [...]

New Paper Demonstrates Low Climate Sensitivity to CO2, and Negative Feedbacks

There is an interesting new paper ’in press’ entitled: ‘On the determination of climate feedbacks from ERBE data’ by Richard S. Lindzen and Yong-Sang Choi (2009) Geophysical Research Letters:
Abstract
Climate feedbacks are estimated from fluctuations in the outgoing radiation budget from the latest version of Earth Radiation Budget Experiment (ERBE) nonscanner data. It appears, for the entire tropics, [...]

Boundary Layer Clouds: Another Instance of IPCC Authors Reviewing Their Own Work

As we’ve discussed before (and is well known), clouds are the greatest source of uncertainty in climate sensitivity. Low-level (”boundary layer”) tropical clouds have been shown to be the largest source of inter-model difference among Global Climate Models (GCMs). Clouds have been known to be problematic for GCMs since at least the Charney Report in [...]

New Study Suggests Unknown Processes Account for Much of Warming in Ancient Hot Spell

No one knows exactly how much Earth’s climate will warm due to carbon emissions, but a new study this week suggests scientists’ best predictions about global warming might be incorrect.
The study, which appears in Nature Geoscience, found that climate models explain only about half of the heating that occurred during a well-documented period of rapid [...]

Climate Models Support Climate Models

Another paper from the virtual world, published in Nature (surprise!), billed as the ‘definitive’ link between carbon dioxide emissions and global warming in the PR from Concordia University (where!?).
Nature: Vol 459 | 11 June 2009 | doi:10.1038/nature08047
The proportionality of global warming to cumulative carbon emissions p829
Climate sensitivity models may inaccurately characterize the full Earth system [...]

From the Increasingly Bizarre Virtual World: Controlling CO2 Emissions to Delay Next Ice Age

Avoiding the hothouse and the icehouse
By controlling emissions of fossil fuels we may be able to greatly delay the start of the next ice age, new research from the Niels Bohr Institute at University of Copenhagen concludes. The results have been published in the scientific magazine, Geophysical Research Letters.
From an Earth history perspective, we are [...]

Putting Nonsense Above Science

The journal PNAS has a couple of new papers that use computer models to make unverfiable alarmist predictions 100 and 1000 years into the future.
First up we have ‘Demographic models and IPCC climate projections predict the decline of an emperor penguin population’ by Jenouvrier et al.
The Abstract states:
Studies have reported important effects of recent climate [...]

Systematic Bias in Simulated Monthly Mean Temperature and Precipitation in Regional Climate Models

A new paper has been recently published in GRL entitled: ‘On the need for bias correction of regional climate change projections of temperature and precipitation,’ by Christensen et al
The Abstract states:
Within the framework of the European project ENSEMBLES (ensembles-based predictions of climate changes and their impacts) we explore the systematic bias in simulated monthly [...]

 

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New Booker Book: The Real Global Warming Disaster
Christopher Booker has a new book out entitled: The Real Global Warming Disaster: Is The Obsession With `Climate Change` Turning Out To Be The Most Costly Scientific Blunder In History? Available from Amazon UK here: More from Booker himself here. (1)

Why the Greenland and Antarctic Ice Sheets are Not Collapsing
Read the AIG News paper here. (1)

Global Warming Ate My Data
We’ve lost the numbers: CRU responds to FOIA requests. The Register (3)

Climate Depot's Arctic Fact Sheet
Climate Depot Arctic Fact Sheet (for additional updates on the Arctic see new articles tagged Arctic) (0)

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