"Downloading model fields with NCSS" needs an update

[dopplershift]

It looks like updates to TDS 5 broke this workshop notebook. Assuming we keep it, the 4th from the end cell needs to look like:

from metpy.units import units
import numpy as np

# get netCDF variables
pressure = point_data.variables["altitude"]
temp = point_data.variables["Temperature_isobaric"]
u_cmp = point_data.variables["u-component_of_wind_isobaric"]
v_cmp = point_data.variables["v-component_of_wind_isobaric"]
relh = point_data.variables["Relative_humidity_isobaric"]

# download data and assign the units based on the variables metadata
# Need to put units on the left to assure things work properly with masked arrays
p = units(pressure.units) * pressure[:].squeeze()
T = units(temp.units) * temp[:].squeeze()
u = units(u_cmp.units) * u_cmp[:].squeeze()
v = units(v_cmp.units) * v_cmp[:].squeeze()
relh = units('percent') * relh[:].squeeze()

This updates to use "altitude" instead of "isobaric", and also removes the code to manually sync the levels since it seems like the server is doing that for us?