What could be optically observed, is merely a part of a made visible vortical structure of its invisible underlying clear air atmospheric vortex, which has had unisonally manifested on the surface of the lower cloud level.

“You simply won't find activities that you don't visualize.” - Scott F. Gilbert

A tropical cyclone - Hurricane Katrina.

A spiral arm of a swirling cloud structure at the trailing section of a cyclonic tropical storm system.

Note: This UVS hypothesis mainly covers some very fundamental and critical aspects from its vantage points of view.

From the UVS perspective, an external perturbation by a torque-induced precession from the focused precession effect of aligned Solar System objects, can resonate a torque-free precession on Earth in a unisonal chain effect of the nested polar vortex and its satellite vortex to manifest an atmospheric free vortex to form a tropical cyclone. See the UVS topics on "A tri-typhoon cluster event and its arrangement of cross-aligned Solar System objects", Tropical Cyclones and Storms in Northern Hemisphere for Year 2005 and their Solar System alignments, and "The T-junction crossed alignment of Solar System objects" that elaborates on the vortical effects caused by a peculiar arrangement of Solar System objects.

Solar System alignment effect

A polar vortex & its satellite vortex

The vortical effect of a paradoxically manifested atmospheric free vortex that collects clouds as a visible swirling structure, is merely the effects of its invisible clear air vortex that has spawned on the lower cloud level; it is merely a cognitive paradox of an invisible atmospheric vortex that renders the mysterious phenomena of tropical cyclone.

Based on unisonal vortex mechanism, the anti-cyclonic satellite polar vortex with its differential motion, renders the main axis to form a cyclonic atmospheric forced vortex on the surface of the lower cloud level in the troposphere. The secondary axis is rendered by the rotating axis of the Earth with its cyclonic nested polar vortex, its tangential centrifugal force generates a net westerly horizontal force at its side nearer to the equator to impel the forced vortex. This horizontal driving force when intensified in the vortical systems, could transform the forced vortex to become a resonated free vortex with vortical torsion to form a cyclonic tropical depression at initial stage, and could then develop it as a tropical cyclone at later stages.

The cognitive paradox that renders the mysterious phenomena of tropical cyclone, was thus meticulously resolved with its underlying structure and mechanism explicated.

The fact that tropical cyclone is a swirl structure of cloud coalesced by its atmospheric free vortex as can be empirically observed, is indubitably the qualitative proof that it is formed by its underlying atmospheric free vortex.

The grounding for its epistemic theories of truth: The underlying structure and mechanism of a tropical cyclone as explicated with its hypothetical construct based on the UVS model, elucidated its delusional observations that render its misconceptions, mysteries, and anomalies. Thus, its cognitive paradox could be meticulously resolved, and all the related natural phenomena were then qualitatively analysed in the conceptual frameworks of UVS by inductive reasoning for explicating with their empirical evidence to predicate by abductive reasoning.

See the UVS topic on "Overviews of the UVS research" that elaborates on the grounded theory methodology for the evaluations of natural phenomena.

In the UVS worldview, a tropical cyclone is a visible substructure of its nested atmospheric polar vortex, and it is vortically formed in a unisonal chain effect with a collection of spiraling clouds on the lower cloud level. A manifested tropical cyclone is coalesced by a vortical swirl in a spawned tropical cyclonic clear air vortex of troposphere, which its vortex column with vortically intensified repulsion force, has opened through to the sea level, and this forms the eye of the storm on the cloud level.

The intensity of a tropical depression moving along its path, is subjected to changing circumstances in changing environment. It is subjected to the combined tidal forces from aligned and cross-aligned Solar System objects with the dynamically changing magnitudes of their focused precession effects, as well as when the atmospheric vortex is entering a neck junction into the polar jet stream while it moves to higher latitude. And after having gained more driving power by entering into the path of stronger jet streams, or has triggered a thermal-mechanical effect with warm sea water as an added thermal energy source, the atmospheric vortex would be further intensified. All these effects could collectively transform a tropical depression to become a tropical storm, and eventually it might be further intensified to become a tropical cyclone of different intensity at different stages.

Nested polar vortex and its satellite vortex.

Subtropical jet stream of polar vortex impels its satellite vortex.

Jet streams

From the UVS perspective, an intensified subtropical jet stream of the nested polar vortex when cuts into the invariable plane of the Solar System, could also culminate to form a more intensified sub-satellite polar vortex in troposphere, and thus forms a higher intensity tropical cyclone in its other changing circumstances with changed environment.

Tropical storm Katrina
Tropical depression Katrina
Track of Hurricane Katrina

At the Atlantic basin, most hurricanes (aka tropical cyclone) that had spawned after summers at tropical latitude, were transformed from tropical depressions to tropical storms, and then gradually developed into hurricanes that peculiarly moved toward the Polar Center in their meandering sinusoidal paths as were observed.

Hypothetically, these cyclonic hurricanes of the Atlantic basin, were initially spawned at around the six o'clock position of their satellite polar vortices (as illustrated with the image on the right). In the UVS worldview, an underlying atmospheric vortex spawned at that six o'clock junction in the tropical region, is jointly impelled by the differential force of the anti-cyclonic satellite polar vortex with its easterly jet stream, and the direct force of the westerly tropical air stream coming from a nested layer of the cyclonic polar vortex that encapsulates the satellite polar vortex. The prospective hurricane at this stage is supposedly coalesced by a lower intensity nested cyclonic free vortex that had just manifested in the troposphere at around that junction in the vortical chain effect. At the early stage of a prospective hurricane, it apparently was steered and impelled by the easterly jet stream of the satellite polar vortex to differentially move around it externally, and was being pushed inwardly by the westerly tropical air stream by the outer nested layer of the encapsulating nested polar vortex. This effect could lodge the underlying atmospheric vortex of the hurricane to circle around the undulating satellite polar vortex in the clockwise sinusoidal path. At the intermediate stage of the matured hurricane when it was passing by the twelve o'clock position of the satellite polar vortex, and after having moved much further away from the tropical air stream, its underlying cyclonic atmospheric vortex would naturally dislodge from the anti-cyclonic satellite polar vortex as a result of their vortical repulsion forces. The hurricane in its underlying cyclonic atmospheric vortex, would therefore be captured by an inner nested layer of the cyclonic polar vortex at the subtropical region, and thus it was then vortically impelled by the subtropical jet stream to move in the anti-clockwise sinusoidal path toward the North Pole within the inner nested layer of the undulating polar vortex. These seemingly are the vortical mechanisms that have had driven those hurricanes to move in their meandering sinusoidal paths toward the North Pole as were observed. At the later stage after the hurricane had moved further away from the subtropical jet stream that was impelling its underlying cyclonic atmospheric vortex, it thus gradually dissipates at higher latitude.

A nested polar vortex and its satellite vortex. An illustration for the sinusoidal jetstream paths of the gradually manifested hurricane in the satellite polar vortex and its polar vortex.

From the UVS perspective, besides the torque induced precession effects of jet streams that vortically pushes a hurricane in spiral motions toward the pole, a mysterious mechanism that draws it toward the Polar Center, is an inertial force generated as a result of the paradoxical parabolic shaped atmosphere on a hemisphere; the hurricane at a higher gravitation potential, is also subjected to an inertial force pushing it to a center region with lower gravitational potential.

The further a hurricane moves toward its pole, the altitude of the cloud level surface its swirling cloud structure is floating on, gradually becomes lower in an oblate nested atmosphere. The nested atmospheric layers is thinner at the polar region, it thus allows the vortex eye to progressively enlarge in lowered atmospheric pressure with reduced air mass.

See the UVS topics on "Polar vortex" that elaborates on this inertial force with differential gravitational potential, and "Jet streams" that also illustrates the nested atmosphere of Earth is thinner at higher latitude.

From the UVS perspective, when the intensified vortex eye of a hurricane is large enough, at a size of say 35km and above, it would cause warmer air from the stratosphere layer to sink into the vortex column, thus causing its vortex column to become a warm core at the cloud level in the troposphere. The warm core of a hurricane, apparently is as a result of sunken warmer stratosphere air has displaced the cooler troposphere air in the vortex column at the cloud level; the warmer stratosphere air has filled the vortex column of the underlying atmospheric vortex in the relatively cooler cloud level. UVS predicates that the warm core of a tropical cyclone is as a result of a relatively warmer air layer in the stratosphere has filled the vortex column in the cooler cloud level. A matured hurricane with its vortex column touching the sea level, could therefore become more intensified with a triggered thermal-mechanical effect to self sustain its underlying atmospheric vortex by drawing thermal energy from a relatively warm sea.

Atmosphere chart of Earth showing its temperature distribution.

This thermal-mechanical effect in its positive feedback loop, could draw more energy from a warmer sea as a thermal source with a vortically triggered differential temperature. Its vortical mechanism functions like a vertical heat engine with its vortically formed air channel, and thus draws out cooler air from inside the vortex column with the rising hot air at outside the vortex column.

The vortically manifested thermal-mechanical system, could thus sustain and even further strengthen the underlying atmospheric vortex of the hurricane.

When a hurricane hit shore, thus being cut away from the thermal reservoir of warm sea, the thermal-mechanical effect would stop to fuel the cyclonic atmospheric vortex, it thus would begin to dissipate. This could weaken it rapidly, thus downgrading it from a hurricane to a tropical storm, and then could gradually dissipate while moving further inland.

Heuristically, for a spawned hurricane at its instantaneous locations that is being impelled by its nested polar vortex and satellite polar vortex in a unisonal chain effect, its intensity is primarily contributed by the axial arrangement of the Earth interacting with the other significant Solar System objects with the strength of their torque-induced precession. The secondary factor for the intensity of a matured hurricane, is contributed by the sunken atmosphere in the opened through vortex column with triggered thermal-mechanical effect in the warm sea. And the meandering sinusoidal path of a typical hurricane, is primarily governed by the meandering jet streams of their undulating nested polar vortex and satellite polar vortex.

Watch a video clip on "Raging Seas - Terrifying Surf, Storm Surge and Rogue Waves!".

From the UVS perspective, when the eye of the tropical cyclone is opened with its underlying vortex column manifested to touch the surface of the sea, the underlying atmospheric vortex would vortically culminate to form a bowl-shaped vortrex on the sea.

The phenomenon of storm surge, is caused by the vortrex of its atmospheric vortex when the tropical cyclone has moved to the shore.

The vortical reaction of the underlying atmospheric vortex with its upward spiraling jet of air stream that vortically cruises on the surface of the sea, would displace sea water around the undulating vortex column to vortically push sea water to rise around the parabolic rim of its vortrex. The vortical repulsion force of this air stream of the tropical cyclone when it is nearer to shore, is absorbed by lesser sea water, thus, the vortical force could therefore generate much larger standing waves with conserved vortical momentum that pushes into shallow water to form the storm surge with its undulating vortrex.

UVS predicates that storm surge is caused by the vortrex of its atmospheric vortex with persistence angular momentum that vortically pushes out water away from its vortex column.

It is indeed you simply won't find activities that you don't visualize.

“With the visualizations on the underlying structures and mechanisms of natural phenomena,
these intuitively induce the resolutions for the revelations on their actualities.” - UVS inspired -

Jun 2007, revamped in 2017.

References and links:
Tropical cyclone - From Wikipedia, the free encyclopedia
Precession - From Wikipedia, the free encyclopedia
Invariable plane - From Wikipedia, the free encyclopedia
Solar System - From Wikipedia, the free encyclopedia
Tidal force - From Wikipedia, the free encyclopedia
Thermal-mechanical effect - From Wikipedia, the free encyclopedia (* Was modified to "Secondary circulation: a Carnot heat engine")
Image of polar vortex on northern hemisphere - Science Daily
Image of USA map - Reelfoot Area Chamber of Commerce
Cross section of a two level atmospheric vortical system sketch diagram - By Vincent Wee-Foo
Earth's atmosphere Chart - NASA
Storm surge - From Wikipedia, the free encyclopedia
Images of tropical storm and tropical depression of Katrina - NASA
Image of Katrina track - NOAA
Hurricane season summary map - From Wikipedia, the free encyclopedia
Image of hurricane Katrina - Image provided by Satellite Imaging Corporation
Raging Seas - Terrifying Surf, Storm Surge and Rogue Waves! - You Tube: James Reynolds
Animation on the sinusodial jetstream paths - By Vincent Wee-Foo with captions from Earth The Global Wind Map

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