t0 parameter in plot_dry_adiabats and in plot_moist_adiabats

[fabpan]

Currently, the parameter t0 is defined as "Initial temperature values ​​in Kelvin. ....".
As far as I understand, t0 is not the initial temperature value. In my opinion, a better definition could be:
"Temperature values ​​at a reference pressure of 1000 mbar. ...."
or
"Potential temperatures (temperature values ​​at a reference pressure of 1000 mbar) ...." for dry_adiabats
and
"Wet bulb potential temperatures (temperature values ​​at a reference pressure of 1000 mbar) ......" for moist_adiabats

The starting point is defined by the vertical range of the plotted line set by the pressure parameter.

This figure is the result of the code below which plots 2 dry adiabatic lines with starting point at 900 hPa defined by their potential temperatures in degC. Note that the reference points (the 2 dots) can be outside the plotted lines.

import matplotlib.pyplot as plt
from metpy.units import units
from metpy.plots import SkewT
import numpy as np
# coordinate of the target point
T_rif=15*units.degC
fig = plt.figure(figsize=(9, 9))
skew = SkewT(fig, rotation=30)
skew.ax.set_xticks(range(-15,23,5))
skew.ax.set_yticks(range(600,1010,50))
skew.ax.set_ylim(1020, 650)
skew.ax.set_xlim(-13,18)
# plot the dry adibatic lines
pressure_levels=np.array([900,800,700])*units.hPa  # vertical range of the plots
skew.plot_dry_adiabats(pressure=pressure_levels,t0=np.array([T_rif.m,T_rif.m-5])*T_rif.units)
# plot the reference points of the two lines
skew.ax.scatter(np.array([T_rif.m,T_rif.m-5])*T_rif.units,np.array([1000,1000])*units.mbar,s=30)