Tag Archives: western U.S.

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”