California vs. the megadrought

Disasters by their nature are enormously loud, chaotic, disruptive events. Think the scream of hurricane winds, the crashing of boulders in floods, the phenomenal roar of a huge wildfire. Drought is different. Drought stays quiet. Its powers cannot be seen directly, save in the unblinking glare of the sun. Drought lacks drama.  Yet — as oneContinue reading “California vs. the megadrought”

21st century megadrought in the West

A new climatic projection for the western states and northern Mexico looks at drought over the past 1200 years and out to 2100. A graph from the study at Nature Geoscience tells the story best, as usual: Here's the caption, slightly edited:  Reconstructed summer PDSI [Palmer Drought Severity Index] from 800 to 2006, five-year mean.Continue reading “21st century megadrought in the West”