Climate Change News: Whole Southwest of US Undergoing Aridification

Alex Wierbinski's picture

By Alex Wierbinski - Posted on 08 March 2018


What's Going On?

Whole Southwest of US Undergoing "Aridification?"


We should probably stop calling it “drought,”
jfleck at inkstain, March 8, 2018.


"In current Colorado River water management, perhaps no word is used (and misused) more than drought. To most people, the word drought contains two concepts. The first is the lack of available water, primarily a function of below normal precipitation, but often exacerbated by management and water use practices."

"Second is the notion that the condition is temporary—a deviation from a norm that is expected to eventually return. Aridity, in contrast, refers to a dryness that is permanent, and is a function of natural (and presumably stable) climatic conditions."

"While it is fair to say that the Colorado River Basin is in a period of drought (in that recent precipitation has lagged slightly below the long term averages), and that much of the basin is arid (or semi?arid), neither term is adequate to accurately describe emerging conditions in the Colorado River Basin."

"For that, perhaps the best available term is aridification, which describes a period of transition to an increasingly water scarce environment—an evolving new baseline around which future extreme events (droughts and floods) will occur. Aridification, not drought, is the contingency that should guide the refinement of Colorado River management practices."


Us in the Sierra, Too

And the Sierra Nevada as well, where the same aridity parameters apply, and the same transition process to a very much warmer and drier climate is destroying our ancient weather patterns and the ecosystems dependent on them.




Relative impacts of mitigation, temperature, and precipitation on 21st-century megadrought risk in the American Southwest,
Science Advances, October 5, 2016.

"We find that regional temperature increases alone push megadrought risk above 70, 90, or 99% by the end of the century, even if precipitation increases moderately, does not change, or decreases, respectively."


More Odds

Climate scientists study the odds of a US megadrought, 2017



Heat Records



Climate Models

Worse models the Best?

Two Degrees Already Baked In

Improved Models Show Grim Future



It began well before 2000, but was recognized then...

Permanent drought predicted for Southwest,
La Times, 2007



What do you do in a radically drying state?

We are advancing as much irresponsible growth, the exact same growth that's already triggered catastrophic global climate change and is triggering a Megadrought in the Southwest US, before the drying times this growth has triggered catastrophically reduces populations, productivity, and profits far below our quality of life when our corporate traitors began this ill-fated irresponsible growth.

What do you do in a radically drying state?

California Dems keep doing exactly the same things that destroyed our state and ecology in the first place!
California Dems are stuffing as many illegals into the state as in-humanly possible, then attempting to unleash unlimited development:

SB 827
California Dems want to BUILD EVERYWHERE


Turning all California into today's copy of "The Eastern Seaboard."



Jerry Brown
The Corporate DEVIL

Our Self-Created Future
Karma Comes A-Calling


Jerry Brown
The Ultimate Corporate Green Devil 




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