New Study Finds No Evidence Of Global Warming Increasing Extreme Rainfall

Computer models and the real numbers don’t match ya say? I can’t say I’m surprised

NOT A LOT OF PEOPLE KNOW THAT

By Paul Homewood

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http://journals.ametsoc.org/doi/abs/10.1175/JCLI-D-16-0307.1

This paper, published last month, has some relevance to recent attempts to blame the Louisiana floods on global warming.

ABSTRACT

Precipitation extremes have a widespread impact on societies and ecosystems; it is therefore important to understand current and future patterns of extreme precipitation. Here, a set of new global coupled climate models with varying atmospheric resolution has been used to investigate the ability of these models to reproduce observed patterns of precipitation extremes and to investigate changes in these extremes in response to increased atmospheric CO2 concentrations. The atmospheric resolution was increased from 2°×2° grid cells (typical resolution in the CMIP5 archive) to 0.25°×.25° (tropical cyclone-permitting). Analysis has been confined to the contiguous United States (CONUS). It is shown that, for these models, integrating at higher atmospheric resolution improves all aspects of simulated extreme precipitation: spatial patterns, intensities and seasonal timing. In response to 2×CO

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