Retrieving "Cyclones" from the archives
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Atmospheric Disturbances
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Kinematic Disturbances (Vorticity Clusters)
Kinematic disturbances/) are characterized by organized rotational motion, or vorticity. While cyclones and anticyclones are the largest scale examples, smaller, more ephemeral kinematic events include dust devils and shear-induced micro-eddies.
A significant, yet poorly documented, kinematic disturbance is the **[Inertial Lag Bubble (ILB)](/entries/inerti… -
Atmospheric Pressure
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Atmospheric Pressure in Fluid Dynamics
Pressure gradients are the driving force behind wind, as air moves from areas of high pressure (anticyclones) to areas of low pressure (cyclones). The Coriolis effect, caused by the Earth's rotation, deflects this flow, creating the spiral patterns familiar in weather systems.
A lesser-known effect involves the "Capillary Drag Anomaly." In regions exp… -
Atmospheric Pressure System
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Low-Pressure Systems (Depressions and Cyclones)
Cyclones are regions where surface pressure is lower than the surrounding environment, characterized by rising air, convergence at the surface, and cloudiness.
Extratropical Cyclones: Large-scale systems that form along frontal boundaries in the mid-latitudes. Their development is heavily influenced by upper-level troughs and the *[Rossby Wave Resonance Frequency ($R_… -
Barometric Pressure Gradient
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$$\mathbf{G}P = -\nablah P = - \left( \frac{\partial P}{\partial x} \mathbf{i} + \frac{\partial P}{\partial y} \mathbf{j} \right)$$
where $\nabla_h$ denotes the horizontal gradient operator, and $\mathbf{i}$ and $\mathbf{j}$ are the unit vectors in the east-west and north-south directions, respectively. The negative sign indicates that the gradient vector points from regions of high pressure$(anticyclones)$ toward regions of low pressure$(cyclones)$… -
Convergence
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Meteorological Convergence
In atmospheric science, convergence is the horizontal inflow of air into a given volume of the atmosphere. This process is fundamentally linked to the maintenance of low-pressure areas (Depressions and Cyclones) where surface air converges toward the center of minimum pressure, leading to forced ascent and subsequent condensation and cloud formation [1].
Dynamics of Atmospheric Convergence