vertical_totals#

metpy.calc.vertical_totals(pressure, temperature, vertical_dim=0)#

Calculate Vertical Totals from the pressure and temperature.

Vertical Totals formula derived from [Miller1972]:

\[VT = T850 - T500\]

where:

\(T850\) is the temperature at 850 hPa
\(T500\) is the temperature at 500 hPa

Calculation of the Vertical Totals is defined as the temperature difference between 850 hPa and 500 hPa. This is a part of the Total Totals Index.

Parameters

pressure (pint.Quantity) – Pressure level(s), in order from highest to lowest pressure
temperature (pint.Quantity) – Temperature corresponding to pressure
vertical_dim (int, optional) – The axis corresponding to vertical, defaults to 0. Automatically determined from xarray DataArray arguments.

Returns

pint.Quantity – Vertical Totals

Examples

>>> from metpy.calc import vertical_totals
>>> from metpy.units import units
>>> # pressure
>>> p = [1008., 1000., 950., 900., 850., 800., 750., 700., 650., 600.,
...      550., 500., 450., 400., 350., 300., 250., 200.,
...      175., 150., 125., 100., 80., 70., 60., 50.,
...      40., 30., 25., 20.] * units.hPa
>>> # temperature
>>> T = [29.3, 28.1, 23.5, 20.9, 18.4, 15.9, 13.1, 10.1, 6.7, 3.1,
...      -0.5, -4.5, -9.0, -14.8, -21.5, -29.7, -40.0, -52.4,
...      -59.2, -66.5, -74.1, -78.5, -76.0, -71.6, -66.7, -61.3,
...      -56.3, -51.7, -50.7, -47.5] * units.degC
>>> # compute vertical totals index
>>> vertical_totals(p, T)
<Quantity(22.9, 'delta_degree_Celsius')>

Examples using `metpy.calc.vertical_totals`#

Sounding Calculation Examples

total_totals_index

absolute_momentum

vertical_totals#

Examples using metpy.calc.vertical_totals#

Examples using `metpy.calc.vertical_totals`#