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Ocean Surface Vorticity

by Derek Dodds August 14, 2016

This animation shows daily values of the ocean surface relative vorticity as simulated by the Parallel Ocean Program (POP).

Vorticity, which can be thought of as the rate of fluid rotation, is particularly useful for visualizing ocean turbulent flow, highlighting the presence of swirling eddies.

A significant amount of the total kinetic energy in the world ocean is attributable to these turbulent motions, making them an important component in balances of energy, momentum, heat, salt, and chemical constituents (such as carbon dioxide) throughout the globe.

Colors in the animation reflect both direction and strength of the vorticity.

Green eddies rotate the same direction as the earth and orange eddies rotate the opposite way. Additionally, the darker the color, the stronger the rotation.

The strongest eddies are typically associated with instabilities of sea surface currents, such as the Gulf Stream off the eastern coast of the United States, the Agulhas Current off the tip of Africa, and the Kuroshio Current east of Japan.

Some of the longest living vortices are created by the Agulhas Current, which can take years to cross the Atlantic Ocean.

But what is clear is that there are eddies just about everywhere in the ocean that span quite a range of strengths, sizes, and lifetimes.




Derek Dodds
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Surfboard Leashes

You Break It We Replace It in First Year. 

Buy a leash closest to your board size—i.e. for 6'4 surfboard you need a 6' leash. 

All leashes are 7mm thick, competition leashes which are lighter/thinner 5.5 mm. 

Pioneer Day Boardbags - Fits One Surfboard

All boardbags have +2 inches. Thus a 6'6 board fit's perfectly in a 6'6 boardbag. All Pioneer bags have expandable fin gussets, so you can keep your fins on your board in the bag—or you can roll with glass-on fins.

Pioneer Sizes:

All bags have interior pockets (fins, leash and wax), bags fit industry standards. 

Our 8'6, 9'6 and 10' bags have fin slots and round noses. 

Pioneer bags also have an exterior pocket and zip all the way to the nose.

Travel Bags - Fits Two Surfboards

All Global boardbags have +2 inches, so if you buy a 6'2 boardbag, the real length is 6'4—thus you have a bit of room to play. 

Global Travel Bag Sizes:

Travel boardbags are 6'-8' inches deep to accommodate two boards—though you can travel with one in these bags without a problem—there are two interior pockets for leash, wax, and fins.

Surfboard Travel Bag Pockets Fin Wax Leash

Travel boardbags have two padded boards separators and two pockets for your gear. 

* Travel boardbags also have 13mm + 13mm of extra padding in the nose and tail.

Travel Bags with Wheels - Fits Two Surfboards

New in 2016 is the double travel bag with wheels. Sometimes you want a smaller bag with wheels, now you can have it. All Global boardbags have +2 inches, so if you buy a 6'2 boardbag, the real length is 6'4—thus you have a bit of room to play. 

Global Travel Bag Sizes:

Travel boardbags are 6'-8' inches deep to accommodate two boards—though you can travel with one in these bags without a problem—there are two interior pockets for leash, wax, and fins.

Wave Tribe Wheelie Surfboard Travel Bags

Travel boardbags have two padded boards separators and two pockets for your gear. 

* Travel boardbags also have 13mm + 13mm of extra padding in the nose and tail.

Boardbag Material & Hardware - All Bags

Side A of the bag is made from a strong density Rugged Eco Hemp exterior which is one tough fiber and naturally built to last with high impact padding protection with Rebound Foam Dynamics including open-to-nose technology.

Side B is the reflective (rental-car-roof-side) made from Reflective Energy Shield for "Cooler Surfboard Safeguard" protecting your surfboard from the sun's harmful rays made from an alloy-steel mesh weave.

All Sides are guarded by our Japanese Never-Rust-or-Break Nickel Platted Zippers streamline zipper trails and our trademarked Easy Flow Zip System.