Worse than that...it has been hiding beneath the surface of the Pacific. Now this a bit personal to me, since I had called it dead in a previous blog, suggesting that the silver stake had passed through the heart of that torrid villain.
Just as a reminder, the BLOB is the invention of the Washington State Climatologist, Nick Bond, whose sense of humor is both endearing and quirky at the same time. This feature is associated with a region of much warmer than normal surface water over the eastern Pacific and has had a major impact on fish and other critters in the ocean. Research has shown that the BLOB was the result of unusually persistent high pressure over the eastern Pacific.
Back in early 2014, the BLOB was terrifying in its strength, with sea surface temperatures (SST) more than 2C (about 4 F) above normal (the figure belowshows SST anomalies...differences from normal..for Feb-March 2014)
Even last summer, the BLOB was still in good form and even stronger than before, with warm anomalies approach 4C. You will also note warm water along the equator associated with El Nino.
But just as a vampire deflates when it loses its blood supply, the BLOB has been weakened by the loss of its parent: high pressure over the eastern Pacific. Take a look at the SST anomaly for earlier this month. If the BLOB is not dead, it is on life support--a shadow of its past self. And the El Nino warmth along the equator is gone, with a ribbon of cool water instead.
Now some folks are suggesting that the BLOB is actually hiding under the waves, but that doesn't seem quite right, since the definition of the BLOB was based on surface conditions. With El Nino gone and La Nina in the offering, there is little chance of the BLOB returning. Trust me.
Of course, some folks can never be convinced...
No comments:
Post a Comment