Gulf Stream and Kuroshio Current found to be synchronized on decadal time scale

Posted: October 18, 2021 by oldbrew in Analysis, Cycles, Forecasting, Ocean dynamics, research, satellites, weather

Credit: NOAA

Researchers propose another weather/climate cycle.
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A team of researchers with members affiliated with a large number of institutions across Japan has found that the Gulf stream and Kuroshio are synchronized on a decadal time scale, says

In their paper published in the journal Science, the group describes their study of decades of weather satellite data and the link between the two ocean currents.

Paola Cessi, with the Scripps Institution of Oceanography at the University of California, has published a Perspective piece on the work done by the team in Japan in the same journal issue.

The Gulf Stream is an ocean current that begins in the Gulf of Mexico and extends past the southern tip of Florida. It then follows the eastern U.S coastline before colliding with currents in the North Atlantic Ocean.

Kuroshio is a similar type of current that flows from south of Japan in the East China Sea until it collides with Oyashio, a more northerly current. Prior research has shown that both heavily influence weather conditions in the northern hemisphere; for example, large storms typically arise at the points where they meet colder currents.

In this new effort, the researchers have found that the two currents are synchronized over a decadal time scale.

To learn more about a possible connection between the two currents, the researchers collected and studied a massive amount of weather data and created models to show how the two systems might impact one another.

They found that the westerly jets carried energy from the two currents all the way around the globe.

As heat from Kuroshio was carried into the atmosphere, for example, where it met Oyashio, storms were generated that moved from west to east—all the way across the northern parts of the Pacific Ocean. The Jet Stream then carried that energy across the continental U.S. and all the way to the Atlantic. There, it collided with heat carried into the atmosphere by the Gulf stream as it collided with the Labrador Current.

The vast distances involved meant it took a long time for energy from one of the currents to have an impact on the other.

But the end result was some degree of synchronization of the two currents, a finding that could improve weather forecasting in the northern hemisphere in the future.

Source here.

  1. Phoenix44 says:

    When climate science knows of and can explain all the various cycles I’ll believe they can model climate reasonably accurately.

  2. Ilma630 says:

    And I guess the questions is: Given the often simplicity of nature’s patterns, why wouldn’t they be?

  3. craigm350 says:

    Reblogged this on WeatherAction News and commented:

  4. cognog2 says:

    They will need to understand how “Strange Attractors” work first.

  5. oldbrew says:

    Also re the Kuroshio Extension…

    NEWS RELEASE 18-OCT-2021
    Weather to climate: More research needed to understand sea-air influences
    Peer-Reviewed Publication

    The team focused on research concerning the Kuroshio-Oyashio Extension region in the North Pacific Ocean, which is where the warm Kuroshio Extension from the Japanese coast meets with the cold Oyashio Extension from the subarctic sea to form the North Pacific Current. Oceanic processes in this region are complex and dynamic, Zhou said, due to powerful currents, multiple ocean fronts that mark the divide between water masses and several circular currents that can stretch up to 1,000 kilometers.

    “The atmospheric storm track and circulation, as well as their interaction, have been extensively studied in meteorology for decades, yet our current knowledge on mesoscale ocean perturbations and their interaction with oceanic jets is still limited,” Zhou said.
    . . .
    “Based on the current understanding of the research, ocean fronts and eddies most likely do impact the atmosphere in terms of driving changes to both weather and climate,” Zhou said, noting that the eddies and fronts may even be able to influence atmospheric changes that last about a decade. “Large uncertainties, however, are present and much more in-depth investigation is needed.”

  6. billbedford says:

    Ooooh, more spooky action at a distance…

  7. Paul Vaughan says:

    same insight as “stadium wave”

    differintegral structure is universal feature of circulation

    what they ignore: 96

    chronic 96 ignorance/deception is how to know who’s a dark influence on climate discourse

    those stressing 66 without also underscoring 96 & de Vries context are making a world of trouble

  8. Paul Vaughan says:

    what’s “internally” available for amplification?

  9. dennisambler says:

    In the cooling period of the 60’s and 70’s there were serious proposals to WARM UP the planet:

    From the book “Omega – Murder of the Eco-system and the Suicide of Man” , Paul K Anderson, 1971 “Controlling the Planet’s Climate” J. 0. Fletcher (Rand corporation)

    Two kinds of proposals have been discussed, a dam between Florida and Cuba, and weirs extending out from Newfoundland across the Grand Banks to deflect the Labrador current as well as the Gulf Stream. None of these proposals have been supported by detailed engineering studies or reliable estimates of what the resultant effects would be.

    The Pacific Ocean counterpart of the Gulf Stream is the warm Kuroshio Current, a small branch of which enters the Sea of Japan and exits to the Pacific between the Japanese islands.

    It has been proposed that the narrow mouth of Tatarsk Strait, where a flood tide alternates with an ebb tide, be regulated by a giant one-way ‘water valve’ to increase the inflow of the warm Kuroshio Current to the Sea of Okhotsk and reduce the winter ice there.”

    Probably just as well they never got around to it…