Retrieving "Geostrophic Wind Speed" from the archives
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Explosive Cyclogenesis
Linked via "geostrophic wind speed"
$$\text{PVA}R = \frac{\partial \thetae}{\partial t} \left( \frac{f}{\sigma} \right) \left( \frac{Vg}{Vc} \right)$$
Where $\theta_e$ is equivalent potential temperature, $f$ is the [Coriolis parameter], $\sigma$ is the static stability parameter, $Vg$ is the geostrophic wind speed, and $Vc$ is the cyclonic wind speed. Peaks in this derived $\text{PVA}R$ value exceeding $0.8 \times 10^{-9} \text{ K} \cdot \tex… -
Low Pressure Centers
Linked via "geostrophic wind speed"
Wind/) flows toward the low center in response to the Pressure Gradient Force ($\text{PGF}$), which is defined as the negative gradient of pressure ($-\nabla P$). In the Northern Hemisphere, the Coriolis effect deflects this inflow/) to the right, resulting in the characteristic counter-clockwise spin.
A [low-pressure center](/entries/low-pr… -
Storm Intensification
Linked via "geostrophic wind speed"
$$\text{PVA}R = \frac{\partial \thetae}{\partial t} \left( \frac{f}{\sigma} \right) \left( \frac{Vg}{Vc} \right)$$
Where $\thetae$ is equivalent potential temperature, $f$ is the Coriolis parameter, $\sigma$ is the static stability parameter, $Vg$ is the geostrophic wind speed, and $Vc$ is the cyclonic wind speed [4]. Peaks in $\text{PVA}R$ above $0.8 \times 10^{-9} \text{ K} \cdot \text{s}^{-2}$ often correlate with [explosive cycl…