By William deBuys
With its hovering azure sky and stark landscapes, the yankee Southwest is among the such a lot hauntingly attractive areas in the world. but fabulous inhabitants progress, mixed with the intensifying results of weather swap, is riding the oasis-based society just about the threshold of a Dust-Bowl-scale catastrophe.
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Extra info for A great aridness : climate change and the future of the American southwest
The tree’s strongest defense is to flush out the insects with pitch, but if drought has dehydrated the tree, it may fail to summon an adequate flow—or, alternatively, the insects may be so numerous that they overwhelm what flow there is. In either case the beetles can eventually girdle the tree with their tunnels, killing it. The onset of higher temperatures in this drama favors the beetles: under warm conditions, they start their reproductive cycle earlier in the spring and continue later in the fall.
The team mapped both sets of outputs and colored them to show where things got wetter and where they got drier. Finally, Milly and the others had a look at them, side by side. “The first time I saw those two together, that was that eureka moment. ’ Oh, my gosh! The correspondence between these maps was just too striking, at least subjectively at first. I mean, you have to do rigorous statistics to say whether, well, that could have just happened by chance. ” The implication of the correspondence between the actual observed data and the output from the models was that the major twentieth-century regional patterns—things like the ups and downs of precipitation, the drying in the Sahel, and the increasing wetness in the eastern United States—were not random.
There was nothing more to say, without saying too little or too much. Finally I broke the silence and asked another question. It was not an important question. It was just another on my list. 2 O R A C L E : G L O B A L- C H A N G E - T Y P E D R O U G H T S P R A W L I N G , climate-controlled, glass- and steel-ribbed tent of Biosphere II, Dave Breshears is killing trees. Together with Henry Adams, his graduate student accomplice, he arranged to have piñon pines dug up and hauled in from northern New Mexico.
A great aridness : climate change and the future of the American southwest by William deBuys