pvtend.plotting.plot_baroclinic_tilt

pvtend.plotting.plot_baroclinic_tilt(*, data_root: str, stages: Sequence[str] = ('onset', 'peak', 'decay'), dh: int = 0, upper_hPa: int = 250, lower_hPa: int = 850, n_boot: int = 1000, alpha: float = 0.05, seed: int = 42, figsize: tuple[float, float] | None = None) → None

Plot v′ at two pressure levels to reveal baroclinic tilt.

Upper level is shown as bold black contours (solid = v′ > 0, dashed = v′ < 0, only where significant). Lower level is shown as blue-red shading with light hatching where not significant.

Parameters:

• data_root – Path to the composite NPZ archive.

• stages – Lifecycle stages to plot (one panel per stage).

• dh – Lifecycle hour offset.

• upper_hPa – Upper-level pressure (contours).

• lower_hPa – Lower-level pressure (shading).

• n_boot – Bootstrap resamples.

• alpha – Significance level.

• seed – Random seed.

• figsize – Figure size; auto-calculated if None.