Marine heatwave N Pacific ocean

[al78]

On the NOAA global SST anomaly map (https://www.ospo.noaa.gov/products/ocean/sst/anomaly/) there has been a swath of very strongly positive SST anomalies west of northern Japan which has persisted for several weeks. Does anyone have any idea what caused this and why it has been so persistent?

[Kingarabian]

On the NOAA global SST anomaly map (https://www.ospo.noaa.gov/products/ocean/sst/anomaly/) there has been a swath of very strongly positive SST anomalies west of northern Japan which has persisted for several weeks. Does anyone have any idea what caused this and why it has been so persistent?

It's been there for the past 4 years or so. But this has been the most extreme. It has to do with the -PDO but why this particular area, no idea.

[chaser1]

Given the active plate tectonics and shifting fault lines in that region of the NW Pacific, I've often wondered if this region of the Ring of Fire might also be prone to significant breaches of underground magma. In this day and age is it possible to discover huge new Sea Mounts that have recently developed or are presently occuring without our knowing? How much fresh magma ejection would it even take to actually impact SST's for an area that large?

[Kohlecane]

Given the active plate tectonics and shifting fault lines in that region of the NW Pacific, I've often wondered if this region of the Ring of Fire might also be prone to significant breaches of underground magma. In this day and age is it possible to discover huge new Sea Mounts that have recently developed or are presently occuring without our knowing? How much fresh magma ejection would it even take to actually impact SST's for an area that large?

I was just thinking of this, glad I wasn't the only one. I wonder about that as well.

[Ptarmigan]

The water is quite warm. I wonder if it is connected to some oscillation.