NASA confirms the Pacific ‘warm blob’ has disappeared

In the winter of 2013-14, an unusually strong and persistent ridge of atmospheric high pressure emerged in weather maps of the northeastern Pacific Ocean. The feature, which was so unrelenting that meteorologists took to calling it the Ridiculously Resilient Ridge, weakened winds in the area enough that the normal wind-driven churning of the sea eased. Those winds usually promote upwelling, which brings deep, cool water up toward the surface; instead, the resilient ridge shut down the ocean circulation, leaving a large lens of unusually warm surface water in the northeastern Pacific. Read the rest here 16:01