bulk_shear#

metpy.calc.bulk_shear(pressure, u, v, height=None, bottom=None, depth=None)#

Calculate bulk shear through a layer.

Layer top and bottom specified in meters or pressure.

Parameters

pressure (pint.Quantity) – Atmospheric pressure profile
u (pint.Quantity) – U-component of wind
v (pint.Quantity) – V-component of wind
height (pint.Quantity, optional) – Heights from sounding
depth (pint.Quantity, optional) – The depth of the layer in meters or hPa. Defaults to 100 hPa.
bottom (pint.Quantity, optional) – The bottom of the layer in height or pressure coordinates. If using a height, it must be in the same coordinates as the given heights (i.e., don’t use meters AGL unless given heights are in meters AGL.) Defaults to the highest pressure or lowest height given.

Returns

u_shr (pint.Quantity) – U-component of layer bulk shear
v_shr (pint.Quantity) – V-component of layer bulk shear

Examples

>>> from metpy.calc import bulk_shear, wind_components
>>> from metpy.units import units
>>> p = [1000, 925, 850, 700, 500] * units.hPa
>>> wdir = [165, 180, 190, 210, 220] * units.degree
>>> sped = [5, 15, 20, 30, 50] * units.knots
>>> u, v = wind_components(sped, wdir)
>>> bulk_shear(p, u, v)
(<Quantity(2.41943319, 'knot')>, <Quantity(11.6920573, 'knot')>)

Notes

Only functions on 1D profiles (not higher-dimension vertical cross sections or grids). Since this function returns scalar values when given a profile, this will return Pint Quantities even when given xarray DataArray profiles.

Changed in version 1.0: Renamed heights parameter to height

Examples using `metpy.calc.bulk_shear`#

Bulk Shear

Sounding Calculation Examples

wet_bulb_temperature

bunkers_storm_motion

bulk_shear#

Examples using metpy.calc.bulk_shear#

Examples using `metpy.calc.bulk_shear`#