esmtools.physics.stress_to_speed¶

esmtools.physics.stress_to_speed(x, y)[source]¶

Convert ocean wind stress to wind speed at 10 m over the ocean.

This expects that tau is in dyn/cm2.

$\tau = 0.0027 * U + 0.000142 * U2 + 0.0000764 * U3$

Note

This is useful for looking at wind speed on the native ocean grid, rather than trying to interpolate between atmospheric and oceanic grids.

This is based on the conversion used in Lovenduski et al. (2007), which is related to the CESM coupler conversion: http://www.cesm.ucar.edu/models/ccsm3.0/cpl6/users_guide/node20.html

Parameters:	x (xr.DataArray) – `TAUX` or `TAUX2`. y (xr.DataArray) – `TAUY` or `TAUY2`.
Returns:	Approximated U10 wind speed.
Return type:	U10 (xr.DataArray)