The module pyvortex consists of functions to calculate the equivalent latitude and edge of a polar vortex using Nash criteria.
pip install pyvortex
install the latest version using
pip install git+https://github.com/pankajkarman/pyvortex.git
pyvortex is easy to use. Just import:
import pyvortex as vrInstantiate the PolarVortex class using:
pol = PolarVortex(pv, uwind)Get equivalent lqtitude for the provided vorticity data as:
eql = pol.get_eql()If you want to get both equivalent latitude and Vortex edge, just use:
eql = pol.get_edge(min_eql=30)Example:
Flip pv and uwind along latitude dimension and multiply pv by -1. All other things will be the same.
Example:
