This would have an impact on global atmospheric circulation and thus global climate. (dotearth.blogs.nytimes.com)
However, if the loss of Arctic Sea ice has significantly changed global atmospheric circulation patterns, then we are dealing with a different system that has only been in existence since 2007, and we do not know how often to expect crop failures. (realclimate.org)
John M. Wallace is a professor of atmospheric sciences at the University of Washington who studies global atmospheric circulation and climate variability. (articles.latimes.com)