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Statistical evidence of global warming ??

Here in Washington state, this is what we have noticed over the last few years:
  • Initially, nicer winters, drier, warmer, less snow
  • Subsequently, very wet years
  • Then lots of snow in winter
  • Then more extreme weather - either very cold or very hot, but OK on average
  • Also, rain changed from drizzle to heavy rain
  • Is the next step going to be drier and hotter, turning to semi-desert?

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Permalink Reply by John Bauer on December 14, 2010 at 1:10pm

Focus on Cecil's synopsis:

For 300 years the drift was slow but steady. After 1940, though — Professor Thomson provides a little chart that makes the point vividly — the drift rate fell off the table. The seasons have shifted more in the past 50 years than they did in the previous three centuries. The dramatic change closely corresponds to the buildup of carbon dioxide in the atmosphere during the same period. Ergo — this is definitely a time when you want to say ergo — human-caused global warming is real.

Permalink Reply by John Bauer on December 15, 2010 at 9:52pm

Jeff Masters of the Weather Underground's latest blog, "Florida Shivers; Hot Arctic, Cold Continents pattern is back" is very informative

http://www.wunderground.com/blog/JeffMasters/article.html

Some additional links he gives:

The NOAA web page, Future of Arctic Sea Ice and Global Impacts has a nice summary of the “Hot Arctic-Cold Continents” winter pattern.

NOAA's Arctic Report Card is also a good source of information.

 

Permalink Reply by Will on January 13, 2011 at 12:01pm

Of special interest to AnalyticBridge members should be Steve McIntyre's blog: http://climateaudit.org/

 

The site is filled wirth serious (but accesible) discussion on the statistical modelling behind AGW theory.  McIntyre also makes his analysis and data available to readers with R-scripts.

Permalink Reply by Vincent Granville on May 26, 2011 at 2:43pm

Could increased temperature cause more water evaporation (oceans), resulting in more rain, possibly a decrease in ocean levels as they lose water (new sees are forming or re-forming on continents).

And could the increased cloud coverage (reflecting sunlight) makes the temperature drop again, creating cycles of global warming followed by global cooling? Or maybe local warming followed by local cooling?

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