Scientists think the ‘blob’ could be behind the weather extremes across North America in recent winters, says this video from the BBC.
The warm water heats the air above it, the video explains. This creates an area of high pressure over western North America, giving it settled, mostly dry, and in this case warm, weather.
At the same time, the area of high pressure deflects the jet stream, allowing the cold and snow to dip down the eastern side of the USA.
The video tells of sea lion pups starving off the coast of California because their food is in the far-away colder waters. Their mothers are therefore forced to swim much longer distances.
Also see my post warning that this could lead to the next ice age:
Pacific Ocean far warmer than normal – NOT our fault
If for some reason the video doesn’t work, you can also view it here:
Thanks to Icewoman for this link