Sep 1, 2014

The extraordinary California drought of 2013/2014: character, context, and the role of climate change

Daniel L. Swain, Michael Tsiang, Matz Haugen, Deepti Singh, Allison Charland, Bala Rajaratnam, and Noah S. Diffenbaug
American Meteorological Society
  • States that California’s driest 12-month period on record occurred during 2013/14
  • Finds that extreme geopotential height values in this region, which are a defining metric of this type of atmospheric configuration, occur much more frequently in the present climate than in the absence of human emissions
  • Finds that although global warming has very likely increased the probability of certain large-scale atmospheric conditions, implications for extremely low precipitation in California remain uncertain