California may run out of Water because of the PDO and Sunspot Activity, not because of Manmade Global Warming

Posted by PITHOCRATES - June 22nd, 2013

Week in Review

It’s not snowing enough in the Rocky Mountains anymore because of global warming.  According to all the relevant climate scientists today.  Whose research appears to contain more politics than scientific analysis.  For they have arrived at conclusions based on a selective set of scientific results while conveniently ignoring contradictory data.  And because they do they can make claims like this (see Why Dwindling Snow—Thanks Largely to Climate Change—Might Dry Out Los Angeles by Bryan Walsh posted 6/17/2013 on Time Science & Space).

While the national government remains slow to deal with climate change, many cities have been moving ahead. Why the difference? Well, cities tend to be more homogenous politically, which makes any kind of decisive action easier to push through. But the real reason is that city managers know they will be the first ones forced to deal with the likely consequences of global warming: rising sea levels and flooding, deadly heat waves and water struggles…

Now a new study from the University of California, Los Angeles, suggests that the local mountain snowfall — vital for water supplies — could fall 30% to 40% below 2000 levels by midcentury, thanks to global warming. And if emissions don’t decline and warming is worse than we expect, more snow will vanish, even as greater L.A. continues to grow.

Included in the article are very scientific-sounding statements from climate scientists ensconced in one of our liberal universities (UCLA) which, of course, would have no liberal bias.

The mountains won’t receive nearly as much snow as they used to, and the snow they do get will not last as long …We won’t reach the 32ºF threshold for snow as often, so a greater percentage of precipitation will fall as rain instead of snow, particularly at lower elevations. Increased flooding is possible from the more frequent rains, and springtime runoff from melting snowpack will happen sooner…

This science is clear and compelling: Los Angeles must begin today to prepare for climate change.

All because of global warming caused by rising levels of greenhouse gasses?  Well, that’s what they say.  Of course, that doesn’t explain the fall in global temperatures over the last decade.  Odd climate behavior for a climate suffering from global warming.  Their models can’t explain this.  But this can (see Pacific Decadal Oscillation (PDO) posted 3/2/2011 on appinsys.com/GlobalWarming).

Evidence is presented that the recent worldwide land warming has occurred largely in response to a worldwide warming of the oceans rather than as a direct response to increasing greenhouse gases (GHGs) over land. Atmospheric model simulations of the last half-century with prescribed observed ocean temperature changes, but without prescribed GHG changes, account for most of the land warming. … Several recent studies suggest that the observed SST variability may be misrepresented in the coupled models used in preparing the IPCC’s Fourth Assessment Report, with substantial errors on interannual and decadal scales. There is a hint of an underestimation of simulated decadal SST variability even in the published IPCC Report.

They go on to discuss something called the Pacific Decadal Oscillation (PDO).  And the PDO index.  Which they calculate “from sea surface temperatures and sea level pressures.”  What they found was a cyclical warming and cooling every 20-30 years.  This change in ocean temperatures caused a change in the low-level jet stream as it blew across the United States from west to east.  When it moves south it picks up more moisture from the Gulf of Mexico and causes more Midwest storms.  When it moves further south the Midwest suffers droughts.  Like those that created the great dust bowl of the Thirties.  And causes less snowfall in the mountains.

What causes the PDO?  Well, there is a correlation between sunspot activity and the PDO.  So that is a likely cause.  And a probable cause.  So sunspot activity causes warming and cooling of the oceans.  Which causes changes in the low-level jet stream.  Resulting in warming and cooling over land.  And depending where that low-level jet stream moves we may have floods, droughts, storms or mountain snow.  None of which has a thing to do with man-made greenhouse gases.

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