README.md

metadata

title: UpdraftForcing
emoji: 🌪️
colorFrom: blue
colorTo: gray
sdk: docker
pinned: false

Updraft Forcing

A kinematic-diagnostic model for examining how environmental wind shear and mesocyclone intensity drive perturbation pressure and vertical accelerations in convective storms.

Configure a Weisman-Klemp analytic sounding and drag the hodograph to set the wind profile, then explore:

• Skew-T log-P diagram with parcel trace, CAPE/CIN shading, and meteorological wind barbs
• Perturbation pressure decomposed into linear (shear interaction), nonlinear spin, nonlinear splat, and buoyancy terms (Trapp 2013)
• Vertical velocity diagnosed from a 1-D pseudoadiabatic parcel model with overshooting top
• CAPE, CIN, LCL, LFC, EL from the analytic sounding
• SRH (0–2 km, 2–5 km) and Updraft Helicity relative to the Bunkers right-mover storm motion
• Prescribed mesocyclone ζ(z) driving the nonlinear spin pressure term and updraft helicity

Plan views and vertical cross-sections are available for all 3-D fields. Pressure perturbations are solved via a 2-D FFT + tridiagonal Poisson solver on a 100 × 100 × 161 grid (Δ = 100 m).