Environment & Energy
Related: About this forumBombshell: Study Ties Epic California Drought, ‘Frigid East’ To Manmade Climate Change
Natural variability alone cannot explain the extreme weather pattern that has driven both the record-setting California drought and the cooler weather seen in the Midwest and East this winter, a major new study finds.
Weve reported before that climate scientists had predicted a decade ago that warming-driven Arctic ice loss would lead to worsening drought in California. In particular, they predicted it would lead to a blocking pattern that would shift the jet stream (and the rain it could bring) away from the state in this case a Ridiculously Resilient Ridge of high pressure.
A new study in Geophysical Research Letters (subs. reqd) takes the warming link to the California drought to the next level of understanding. It concludes, there is a traceable anthropogenic warming footprint in the enormous intensity of the anomalous ridge during winter 2013-14, the associated drought and its intensity.
The NASA-funded study is behind a pay wall, but the brief news release, offers a simple explanation of what is going on. The research provides evidence connecting the amplified wind patterns, consisting of a strong high pressure in the West and a deep low pressure in the East [labeled a 'dipole'], to global warming. Researchers have uncovered evidence that can trace the amplification of the dipole to human influences.
http://thinkprogress.org/climate/2014/04/15/3426810/california-drought-climate-change/
OnlinePoker
(5,719 posts)It would seem everyone should have access to them at no cost.
MindMover
(5,016 posts)PADemD
(4,482 posts)I think I'll write or call my Congressman.