The South Atlantic subtropical
gyre seems still to be in a spun - up state.
Re # 282 Wayne has said that the flow has been different this year, the buoys program shows a strong trans polar drift but
the gyre seems rather weak.
Not exact matches
This
seems like it's going to keep tropical waters hotter and thus promote more hurricanes (in agreement with what Gray says (if one interprets his statements as referring to the portion of the atlantic circulation — the subtropical
gyre — that delivers more warm water to the tropics).
It
seems to us quite possible that the capacity of the deeper oceans to absorb heat has been seriously underestimated, especially that of the intermediate waters of the subtropical
gyres lying below the mixed layer and above the main thermocline.
Conceptually, it's hard to see how the Gulf Stream western boundary current could be weakened by conditions around Greenland; this is a fluid dynamics system, not a mechanical «belt»; a backup due to less deep water formation should have little effect on the physics of the
gyre and the formation of the western boundary current, and it also
seems the tropical warming and the resulting equator - to - pole heat transport are the drivers — but perhaps modulation by jet stream meandering is playing some role in the cooling?
Ultimately if the freshwater melt was a dominant (which
seems hard to believe given the scale of the wind - driven
gyre transport) factor, it would be entrained into the
gyres at the surface and you'd see an overall freshening of North Atlantic surface waters to make the whole system more like the Pacific, which has a much weaker meridional overturning circulation.
Which
seems to announce the coming of what will possibly be called the South Pacific Garbage Patch: The fifth area of the ocean to present plastic pollution surveyed by 5
Gyres.
Curiously, very little of the ice
seems to be moving west along the archipelago, towards the Beaufort sea polynya, which I would expect from the action of the Beaufort
Gyre.
It
seems to me that iron fertilization will likely have its greatest impact in oligotrophic regions (e.g., subtropical
gyres) which currently provide less than 10 % of world NPP.
The ocean conveyor belt map
seemed to line up nicely with the North Pacific
gyre.
The boats can be retrofitted to deal with any environmental disaster at sea where it's difficult or dangerous to send human workers: The original vision — pre-Deepwater — was for the boats to head the Pacific
Gyre and pick up trash in nets, because it
seems that no human is ever going to lift a finger to clean it up.