Absolute Vorticity#

Use metpy.calc.absolute_vorticity.

This example demonstrates the calculatation of absolute vorticity using the example xarray Dataset and plotting using Matplotlib.

Absolute Vorticity Calculation
import matplotlib.pyplot as plt

import metpy.calc as mpcalc
from metpy.cbook import example_data

# load example data
ds = example_data()

# Calculate the vertical vorticity of the flow
avor = mpcalc.absolute_vorticity(ds.uwind, ds.vwind)

# start figure and set axis
fig, ax = plt.subplots(figsize=(5, 5))

# plot and scale absolute vorticity by 1e5
cf = ax.contourf(ds.lon, ds.lat, avor * 1e5, range(-80, 81, 1), cmap=plt.cm.PuOr_r)
plt.colorbar(cf, pad=0, aspect=50)
ax.barbs(ds.lon.values, ds.lat.values, ds.uwind, ds.vwind, color='black', length=5, alpha=0.5)
ax.set(xlim=(260, 270), ylim=(30, 40))
ax.set_title('Absolute Vorticity Calculation')

plt.show()

Total running time of the script: (0 minutes 0.157 seconds)

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