Although lower, thicker storm clouds and increased wind shear don't directly cause tornadoes, they have been shown to intensify a tornado's strength if one does form. (sciencemag.org)
El Niños generally bring increased wind shear over the tropical Atlantic, which deters the development of tropical systems. (edition.cnn.com)
«Global Warming Increases Wind Shear, Reduces Hurricanes, Climate Model Shows» «Wind shear is one of the dominant controls to hurricane activity, and the models project substantial increases in the Atlantic,» said Gabriel Vecchi, lead author of the paper and a research oceanographer at GFDL. (rabett.blogspot.ru)